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1

Metale ciężkie w wyrobach skórzanych i włókienniczych. Normatywy i znormalizowane procedury oznaczania metali

Świetlik Ryszard

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2025

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nr 1

29--38

PL

Dla ochrony konsumentów przed ekspozycją na metale ciężkie obecne w wyrobach tekstylnych i skórzanych wprowadzono szereg regulacji prawnych. W prestiżowych eko-certyfikatach zostały określone progowe zawartości przynajmniej najbardziej toksycznych metali ciężkich (As, Cd, Hg i Pb). Jednakże nawet najlepiej sformułowane regulacje prawne nie mogą zapewnić pełnej ochrony użytkowników tych artykułów. Niezbędna jest kontrola analityczna, dysponująca zestawem dobrze opracowanych i zwalidowanych procedur analitycznych wykorzystujących współczesne techniki instrumentalne. Takie warunki spełniają procedury analityczne ujęte w normach, najlepiej międzynarodowych lub europejskich (ISO i EN). W tej pracy omówiono procedury analityczne opisane w normach ISO oraz EN i wdrożonych do zbioru Polskich Norm. Aby przybliżyć czytelnikom tę tematykę, omówienie norm badań poprzedzono krótką charakterystyką wykorzystywanych technik instrumentalnych. Zaprezentowane postępowania analityczne umożliwiają oznaczanie całkowitej zawartości metali ciężkich oraz oznaczanie ich frakcji biodostępnej.

EN

To protect consumers from exposure to heavy metals present in textile and leather products, many legal regulations have been introduced. Prestigious eco-certificates specify the threshold levels for at least the most toxic heavy metals (As, Cd, Hg and Pb). However, even the best-formulated legal regulations cannot provide full protection for users of these articles. Analytical control with a set of well-developed and validated analytical procedures using modern instrumental techniques is essential. Such conditions are met by standardized analytical procedures preferably published in ISO and EN standards. This paper discusses analytical procedures described in ISO and EN standards and implemented in the set of Polish Standards. To better familiarize readers with this topic, the discussion was preceded by a brief description of the instrumental techniques used. The presented analytical procedures make it possible to determine the total content of heavy metals and their bioaccessible fraction.

2

Potentially toxic elements contamination and ecological risk assessment in water and surface sediments of Bistrica River

Demaku Skender, Kastrati Tringa

Journal of Water and Land Development

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2025

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no. 64

12--20

EN

This research evaluates the quality of water and surface sediment in the Bistrica River, addressing the growing environmental challenges in Kosovo caused by extensive human activities. Contamination of these resources poses significant threats to aquatic ecosystems and human health. To assess this, we analysed the levels of potentially toxic elements (PTEs) in the samples using inductively coupled plasma optical emission spectrometry (ICP-OES). The elements examined included As, Cd, Fe, Pb, Ni, Mn, Cu, Zn, Al, and Co. Samples were collected from various sites along the Bistrica River during both high-flow and low-flow seasons in October 2023. The degree of PTE contamination was assessed using several pollution indices (contamination factor (CF), contamination degree (CD), pollution load index (PLI), enrichment factor (EF), geoaccumulation index (Igeo) and ecological risk index (ERI)), indicating that water exhibit low to moderate levels of pollution (World Health Organization (WHO) standards), while in sediment the pollution is extremely low (U.S. Environmental Protection Agency (EPA) standards). Results revealed that pollution, in water samples, for some elements, such as Fe, Pb and Ni, exceeded the guidelines by the WHO, while other elements, such as Co, Al, Cu, Mn, Zn, As and Cd, are below the permitted limits according to the WHO standards. Additionally, statistical analysis and contamination clusters, primarily originating from agricultural fields and grazing areas within the catchment. To reduce these risks and safeguard both the aquatic ecosystem and human health, it is crucial to maintain regular monitoring and enforce effective management strategies.

3

Characterisation of galvanisation effluent using lime-anionic polyacrylamide : A case study from Gauteng, South Africa

Chauke Tebogo M.D., Monapathi Mzimkhulu E., Mashifana Tebogo, Modise Johannes S., Okoli Bamidele J.

Journal of Water and Land Development

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2025

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no. 64

63--71

EN

Galvanisation, a critical industrial process for rust prevention, generates effluents containing heavy metals and other pollutants, posing environmental and health risks. This study evaluates the effectiveness of a combined limeanionic polyacrylamide (PAM) treatment to reduce these contaminants from effluent generated by the galvanising industry in Gauteng, South Africa. Effluent samples were collected and analysed for heavy metals (Cd, Cr, Cu, Pb, Zn, Mn, Fe) and physicochemical parameters, including electrical conductivity, chloride, and pH, using standard methods. Untreated effluent exhibited high levels of heavy metals, particularly lead, zinc, manganese, and iron, far exceeding local discharge limits. Post-treatment analysis showed substantial reductions in metal concentrations, achieving compliance with regulatory standards, with pH-adjusted to optimal levels for metal hydroxide precipitation. Additionally, chloride concentrations were reduced from 14,383.24 mg∙dm-3 to 3,890.40 mg∙dm-3 and electrical conductivity from 130.50 to 21.10 μS∙cm-1. Despite these improvements, the values still exceeded the municipality’s discharge limits of 500 mg∙dm-3 for chloride and 0.1 μS∙cm-1 for conductivity, indicating residual high ion concentrations. While the lime-PAM treatment effectively improved effluent quality, the results suggest a need for supplementary treatments to achieve full compliance with stringent regulatory standards. Overall, the lime-PAM approach shows potential for reducing heavy metals and physicochemical contaminants reduction in galvanising effluent. However, further optimisation and integration of advanced treatment technologies are recommended to enhance efficacy and ensure environmental compliance.

4

Assessment of Soil Contamination by Roof Runoff. A Case Study from Wrocław, Poland

Hołtra Anna, Zamorska-Wojdyła Dorota, Ferenc Zbigniew

Environment Protection Engineering

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2025

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Vol. 51, nr 1

93--109

EN

The study focused on the determination of heavy metals originating from anthropogenic sources to assess the environmental and health risks to city residents. The single pollution indices showed the key pollutants in soils such as Zn, Cd, and Pb. Contamination level assessment and the toxicity of pollutants were done by the multi-elemental pollution indices. They showed heavy pollution of tested soils with high ecological risk. The correlation analysis and the principal component analysis model were utilized to identify the relative contribution of metals to soil pollution and provide information about the potential sources of metals. The most important for elemental composition in soils in Wrocław are three emission sources: leaching of pollutants from the materials used in the roof coverings and guttering, domestic heating with fossil fuel combustion and other solid materials, leaching of the air pollution including of the road traffic. The health risk analysis shows that ingestion and then dermal contact are the greatest exposure pathways for humans. The health risk was low, although children have greater risks than adults.

5

Analysis of variations in heavy metal levels and soil microorganism counts resulting from shelling incidents in Ukraine

Moliszewska Ewa, Bida Iryna, Matik Kacper, Ślusarczyk Aleksandra, Pawliczek Dominik, Havryliuk Olesia, Hovorukha Vira, Tashyrev Oleksandr

Archives of Environmental Protection

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2025

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Vol. 51, no. 1

83--91

EN

Military activities affect soil conditions through contamination with metal-containing debris, such as projectile and rocket fragments, as well as bullet remnants, leading to the release of heavy metals and subsequent environmental contamination. The goal of our study was to examine the concentration of heavy metals in areas affected by shelling and to assess their impact on the population of soil microorganisms, including those exhibiting heavy-metal resistance. Metal concentrations were analyzed via an XRF analyzer. The study involved examining both soil samples and missile fragments. Microorganisms were isolated using Koch’s and Hungate’s roll tube methods. The concentration of iron in soil was the highest, reaching 8,1991.3±132.8 ppm. The concentration of other metals (Ni, Cu, Cr) varied between 407.5±8.0 ppm and 4.6±2.1 ppm. Cobalt compounds were not detected at the projectiles impact sites. The number of aerobic chemoorganotrophic bacteria in all soil samples was in the range of (1.8±0.2) × 105 – (3.7±0.2) × 105 CFU/g, while chromium-resistant bacteria were, on average, an order of magnitude fewer. The number of anaerobic microorganisms ranged from (1.4±0.2) × 105 to (2.6±0.2) × 105 CFU/g. A follow-up study conducted after three months indicated a tendency for an increase in both aerobic and anaerobic bacteria, including metal-resistant strains. Overall, the total number of microorganisms in all soil samples showed an upward trend. These results show that soil microbial communities may play a role in the detoxification of heavy metals in contaminated soils.

PL

Działania militarne negatywnie wpływają na warunki glebowe poprzez zanieczyszczenie odpadami zawierającymi metale, takimi jak fragmenty pocisków i rakiet, a także pozostałości pocisków. Materiały te ulegają korozji w glebie, co prowadzi do uwolnienia metali ciężkich i skażenia środowiska. Celem naszych badań było zbadanie stężenia metali ciężkich na obszarach dotkniętych ostrzałami i ocena wpływu tego zanieczyszczenia na populację mikroorganizmów glebowych, z uwzględnieniem mikroorganizmów odpornych na metale ciężkie. Stężenie metali (żelaza, chromu, miedzi, kobaltu i niklu) analizowano za pomocą przenośnego analizatora XRF Niton XL5 Plus. Badanie obejmowało zarówno próbki gleby, jak i fragmenty pocisków. Mikroorganizmy tlenowe z badanych próbek gleby izolowano metodą Kocha, natomiast beztlenowe oznaczano metodą rurkową Hungate’a. Stężenie żelaza okazało się najwyższe w glebie, do 81991,3±132,8 ppm. Stężenie innych metali (Ni, Cu, Cr) wahało się w granicach 407,5±8,0 - 4,6±2,1 ppm, w zależności od próbki. Związków kobaltu nie wykryto w miejscach trafień pocisków. Liczba tlenowych bakterii chemoorganotroficznych we wszystkich próbkach gleby mieściła się w zakresie (1,8±0,2) × 105 – (3,7±0,2) × 105 jtk/g, podczas gdy bakterii odpornych na chrom było średnio o rząd wielkości mniej. Liczba mikroorganizmów beztlenowych w próbkach mieściła się w zakresie (1,4±0,2) × 105 – (2,6±0,2) × 105 jtk/g próbki. Badanie kontrolne przeprowadzone po trzech miesiącach wykazało tendencję do wzrostu zarówno bakterii tlenowych, w tym odpornych na metale, jak i beztlenowych. W szczególności liczba tlenowych bakterii chemoorganotroficznych wzrosła do (1,0±0,2) × 106 jtk/g. Wyniki badań wskazują, że społeczności mikroorganizmów glebowych mogą odgrywać rolę w detoksykacji metali ciężkich w zanieczyszczonych glebach.

6

Preparation and use of alginate-based composites with the addition of graphene oxide for the removal of divalent metal ions from aqueous solutions

Fryczkowska Beata, Zaręba Piotr

Zeszyty Naukowe SGSP / Szkoła Główna Służby Pożarniczej

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2024

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Nr 92 (tom 1)

85--101

EN

Industrial wastewater contains heavy metals such as zinc, copper, lead, chromium, nickel, cadmium, arsenic, cobalt and mercury and is one of the types of sewage that negatively affect the environment. Metal ions can be removed using various types of sorbents. An interesting solution are polysaccharide-based sorbents. This paper presents research on the preparation and use of granules based on 2% alginate with the addition of 2.81% graphene oxide as sorbents of the following ions: Ni2+, Co2+, Cu2+, Pb2+ and Cd2+. Graphene oxide / alginate solutions, containing from 0.18% to 5.62% of GO, were prepared for the tests. Granules were formed by coagulating successive alginate solutions in 2.5% CaCl2 (Method 1). The possibility of introducing alginate solutions directly into solutions containing metal ions was also tested (Method 2). As a result of the study, it was observed that the use of ready-made sorbent (Method 1) allows the removal of ~ 30% of the contamination within 30 to 60 minutes. This method turned out to be the most effective for removing Ni2+, Co2+ and Cu2+ ions. The use of a simplified procedure (Method 2), on the other hand, allows the removal of all tested metal ions in amounts ranging from 5% (Cd2+) to 25% (Co2+).

7

An attempt to determine the role of catchment area management elements with respect to heavy metals pollution of bottom sediments of selected antrhropogenic lakes

Kostecki Maciej

Zeszyty Naukowe SGSP / Szkoła Główna Służby Pożarniczej

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2024

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Nr 89 (tom 1)

7--21

EN

The correlations between the catchment factors and the contamination of bottom sediments with heavy metals in selected flow-through anthropogenic reservoirs were investigated. The catchment development structure determines the proportions between metals. For the area covered by the study, it was found that the greater the length of the watercourse, the greater the catchment area, the greater the share of industrialized areas, the greater the population density and the salinity of the water. The proportion of industrialised catchments is influenced by the length of the river and the size of the total catchment area. It was found that the greater the share of industrialized areas in the river basin, the higher the population density. Population density is related to the salinity of the water in the stream and the conductivity. The concentration of metals in bottom sediments of anthropogenic overflow reservoirs is related to: the length of the watercourse, the amount of water introduced into the reservoir, the share of industrialized areas, the size of the catchment area and population density. The share of agricultural and forest areas in the total catchment area is related to the concentration of heavy metals in bottom sediments to a much lesser extent. The correlation between the share of agricultural land and the concentration of cadmium in bottom sediments reflects the presence of this metal in mineral fertilizers.

8

A Comprehensive review on graphene oxide based nanocomposites for wastewater treatment

Mohammed M.N., Aljibori H.S.S., Jweeg Muhsin Jaber, Al Oqaili Firas, Abdullah Thamer Adnan, Abdullah Oday I., Meharban Faiza, Rashed Rashed T., Aldulaimi Mustafa, Al-Azawi Khalida

Polish Journal of Chemical Technology

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2024

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Vol. 26, nr 1

64--79

EN

With the paramount development of industry and agriculture sector, levels of different pollutants like, heavy metal ions, pharmaceuticals, organic dyes, biological waste and other pollutants are becoming serious. The ecosystem and human health suffered greatly from the adverse effects of these pollutants. The disposal of these pollutants has become an urgent issue for the human society. Graphene oxide base nanocomposites have generated an excellent extent of focus as desirable alternatives for the adsorptive elimination of contaminants from aqueous systems owing to their enhanced surface area and multiple functional groups for adsorption. Graphene oxide (GO) as a graphene derivative exhibited superior features as obtainable in a graphene sheet. Moreover, the addition of oxygen functional group at the edges and basal plane of graphene further enhanced the efficiency of the graphene by providing sites for the attachment of different metals on the surface. On the underlying adsorption processes, graphene-based nanocomposites for specific contaminants are designed and currently employed for wastewater treatment. This review presents the ongoing development of GO base nanocomposites and their useful applications, understanding how well graphene-based nanocomposites adsorb pollutants and how that relates to the ways in which pollutants interact with adsorbents is crucial. This study highlights newly developed trends in the creation of graphene oxide based nanocomposites to eliminate different heavy metal ions, dyes, pharmaceuticals, and oils spills from effluent water. The focus is on various graphene oxides nanocomposites application for the removal of different pollutants and regeneration of graphene oxide base nanocomposites after several adsorption cycles. Other challenges and potential directions for designing efficient GO based nanocomposites as adsorbents are also presented along with the problems of current studies.

9

Heavy metal concentration and potential health risk assessment for the European eel (Anguilla anguilla, Linnaeus 1758) from the Gediz Delta (Eastern Aegean, Türkiye)

Taş Elif Çağrı, Başaran Asli, Sunlu Uğur, Salman Alp

Oceanological and Hydrobiological Studies

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2024

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Vol. 53, No. 2

144--152

EN

The present paper is the first document on heavy metal levels in the European eel (Anguilla anguilla) collected from the Gediz Delta in the Eastern Aegean (Türkiye). In this study, concentrations of Cd, Cu, Zn and Pb were determined in the liver, gills, and muscle tissues of A. anguilla eels. Sixty dead eels were obtained between June 2015 and January 2016, and their total size and weight were measured. Heavy metal accumulation levels in edible muscle tissue of the eels were compared with national and international standards, and Estimated Weekly Intake (EWI), Target Hazard Quotient (THQ), and Total Target Hazard Quotient (Σ THQ) were calculated. It was determined that metal concentration levels in A. anguilla follow the sequence of Zn > Cu > Pb > Cd. Zn has the highest concentration in all sampling periods and in all tissue types. It was found that Σ THQ was below 1 and amounted to 0.41. This result shows that there is no carcinogenic risk associated with the consumption of A. anguilla in adults.

10

Evaluation of selected heavy metal and selenium pollution in water and sediments of Lake Eğirdir (Isparta/Türkiye) using statistical analysis and pollution indices

Özçelik Şule, Tekin-Özan Selda

Oceanological and Hydrobiological Studies

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2024

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Vol. 53, No. 2

186--207

EN

The purpose of this study is to assess heavy metal and selenium pollution in water and sediment of Lake Eğirdir using some indices. The water and sediments have the highest content of Fe. According to Water Quality Index (WQI) results, the lake water is in the good category, while the low pollution category depends on HPI and HEI values. The Enrichment Factor (EF) showed that the sediments contained very high, extremely high and significant levels of Pb, Cr, Cu, Mn, Ni and Fe. The Geoaccumulation Index (Igeo) revealed that Lake Eğirdir was not polluted with Cr, Cu, Fe, Mn, Mo, Ni and Zn. Based on the results of the Contamination Factor (CF), Cr, Cu, Fe, Mn, Mo, Ni and Zn were in the low contamination category. The results of The Pollution Load Index (PLI) for lake sediments indicated no contamination for all metals in all seasons. Sediment quality guidelines were used to determine the possible risk of heavy metal contamination of sediments, and the results show that Cd and Pb were at the minimal effect threshold (MET), while Cr, Cu, Ni and Zn were at the lowest effect levels (LEL). These results indicate that precautions should be taken to prevent an increase in metal pollution and reduce the existing pollution.

11

Comprehensive assessment of water and sediment quality in Lake Nasser, Egypt, using various potential risk indices

Abdel-Satar Amaal M., Salem Salem G., El-Sayed Seliem M., Goher Mohamed E., Abdelaziz Ghada S., Al-Afify Afify D.G.

Oceanological and Hydrobiological Studies

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2024

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Vol. 53, No. 1

40--60

EN

Lake Nasser is a freshwater lake that supplies over 95% of Egypt’s freshwater budget. Therefore, the quality of water in the lake is critical for its conservation. In addition to assessing the metal pollution load, the quality of water and sediment in the lake was assessed by collecting water and sediment samples for metal content analysis. Lake Nasser is a warm monomictic water body with a single circulation cycle in the cold months. Dissolved oxygen content in bottom water samples often dropped significantly to levels below international guidelines, reflecting reduced rates of photosynthetic activity. Although 50% of the lake’s water samples contained Pb concentrations slightly above the World Health Organization’s (WHO) limit for drinking water, the metal pollution index did not exceed the critical level and was classified as low metal water pollution. Based on the geoaccumulation index (I-geo), the enrichment factor (EF) and the pollution load index, the sediments of Lake Nasser are practically uncontaminated with metals. Ni has the highest EF and I-geo values, while Ni and Cd contributed the most to the ecological risk and toxic risk index. The obtained results revealed that Cd and Ni in the sediments may pose a threat to organisms living in Lake Nasser.

12

Blood serum IgE and muscle element levels in Cyprinus carpio infested by Argulus foliaceus in Lake Çavuşçu (Konya/Turkey) : Assessment of their impact on human health

Gümüş Numan Emre

Oceanological and Hydrobiological Studies

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2024

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Vol. 53, No. 4

424--434

EN

Fish with the metazoan parasite Argulus foliaceus (Crustacea: Branchiura) infestation observed in carp (Cyprinus carpio) were caught between September and October 2018 in Lake Çavuşçu. The objective of this study was to determine the concentrations of selected heavy metals (Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Se, Zn) in the muscle tissue of individuals of this fish species. The levels of heavy metals were studied and assessed for their effects on human health. The results obtained in the study were compared with the limit values set by national and international quality criteria. In addition, blood serum IgE levels were examined in fish. IgE is considered part of the parasite-specific immune defense system called allergic antibody. The results were compared with serum IgE levels in non-parasitized carp. It was found that serum IgE levels of infested fish were higher than serum IgE levels of non-parasitized carp. The recommendation for consumers is that although the target hazard quotient (THQ) and total target hazard quotient (TTHQ) were well below 1, they should be mindful of the risk in their daily fish intake.

13

Ecological risks assessment of fishery commodities from heavy metal in The East Java Province, Indonesia

Andriyono Sapto, Hidayati Nuning V., Fitrani Mirna, Manaf Latifah A., Habib Ahasan, Dewi Umi U., Mukadar Saadah

Journal of Water and Land Development

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2024

|

no. 60

183--193

EN

Heavy metals are a crucial group of chemicals extensively used in materials to meet human needs, eventually leading to contamination of aquatic ecosystems and accumulation in organism’s tissues. Heavy metals enter the aquatic ecosystem from various sources. Those metals that pollute aquatic waters are deposited in sediments, remain dissolved in water or accumulate in the food web of aquatic organisms. Benthic biota is believed to accumulate the highest levels of these metals, while other aquatic animals, such as fish, shrimp, and macroalgae, serve as significant sources of heavy metals intake through food and the environmental exposure. Ina study conducted in and around the east Java, Indonesia, the concentration of heavy metals in commercially important fish species, shellfish, and macroalgae were evaluated using an inductive couple plasma-mass spectrometer (ICP-MS). This study is very important because fishery resources are not only vital for exports but also serve as a primary source of essential food for local communities. The results showed that heavy metal concentration (Pb, Cd, and Hg) in samples were 12.3 mg∙dm-3 , 0.171 mg∙dm-3, and undetectable, respectively. This study showed that different metals were present in the samples at different levels, all of which fell within the maximum residual levels set by the EU and USFDA. The results of an analysis of food safety based on the Hazard Index showed values below 1 point, indicating that fishery products (fish, shrimp, and macroalgae) from the East Java Province are generally safe for human consumption.

14

Assessment of heavy metal pollution in groundwater using a multivariate analysis approach

Sbai Khalid, Tahri Latifa, Hafiane Fatima Zahra, Halima Oumaima Iben, Fekhaoui Mohammed

Journal of Water and Land Development

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2024

|

no. 61

175--182

EN

The current study aims to assess underground water pollution using an integrated approach that combines statistical methods such as principal component analysis (PCA) and water quality diagrams (Piper diagram, Schoeller-Berkalov diagram). A total of twenty water samples were collected from the Tiflet region in the Sebou basin and analysed for various physicochemical parameters, including temperature, pH, and heavy metal concentrations (Cu2+, Zn2+, Fe2+ and Pb2+). The average concentrations of Pb2+, Zn2+, Cu2+, and Fe2+ in the water samples were found to be 41.9, 14.8, 20.1, and 8.1 mg∙dm-3, respectively. These concentrations indicate a significant presence of heavy metals in the groundwater samples. Therefore, it can be concluded that the groundwater in this area is heavily polluted with heavy metals and other pollutants. This finding raises concerns regarding the use of this water for irrigation and agricultural activities in the region. This suggests that these four components play a crucial role in determining the overall water quality. The distribution patterns of the metals Pb2+, Zn2+, Cu2+, and Fe2+ in the well water within the study area are of particular environmental concern. It is recommended to establish a monitoring network to ensure the sustainable management of water resources in order to address this issue effectively.

15

Transfer of Metals from the Soil to Medicago sativa Irrigated with Municipal Landfill Leachate

Belasri Lamiaa, Arabi Mourad, Sabri Safaa, Hmimid Fouzia, Benichou Samah Ait

Journal of Ecological Engineering

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2024

|

Vol. 25, nr 8

336--346

EN

Morocco faces a growing waste issue due to population growth, economic expansion, and industrialization, leading to environmental concerns, especially regarding leachate. From 1986 to 2022, Casablanca's main landfill produced a total of 800,000 m³ of leachate, which was stored in evaporation ponds, posing significant environmental risks. Our research not only concentrates on traditional chemical analyses for leachate assessments but also emphasizes ecosystem interactions. Phytotoxicity tests assess the impact of contaminants, particularly heavy metals, complementing traditional chemical analyses. Our study investigated the accumulation of these contaminants in the soil and their subsequent transfer to plant tissues. This research aimed to examine the accumulation of heavy metals, including Pb, Cd, and Hg, in soils irrigated with varying leachate concentrations (C0: control; C1: 5%; C2: 7%; C3: 10%; and C4: 15%). The experiments involved the cultivation of M. sativa plants under open-field conditions. To assess the transfer of metals from soil to plant tissues, the transfer factor (TF) index was calculated. Our findings revealed that Pb, Cd, and Hg exhibited transfer factor ranges of 0.55–0.93, 0.07 to 0.21, and 0.1 to 0.37, respectively. The accumulation of heavy metals at the different leachate concentrations followed the order Pb>Hg>Cd.

16

The Content of Heavy Metals and Trace Elements in Different Soils Used under the Conditions of Homestead Plots and Field Agricultural Lands of Ukraine

Razanov Serhii, Alieksieiev Oleksii, Alieksieievа Olha, Vradii Oksana, Mazur Kateryna, Puyu Vasyl, Piddubna Antonina, Povoznikov Mykola, Postoienko Dmytro, Zelisko Oleh

Journal of Ecological Engineering

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2024

|

Vol. 25, nr 6

42--50

EN

The soils of agricultural lands of Ukraine have different features of use for growing agricultural crops. In particular, under the conditions of homesteads in urbanized areas, the use of soils is observed mainly for monoculture (extensive agriculture). Usually, such soils are used primarily for the cultivation of potatoes and a small amount of vegetable crops: beets, cucumbers, cabbage, tomatoes, carrots, parsley, dill, etc. Organic fertilizers and a small amount of mineral fertilizers are used to fertilize the soils of homestead plots. Polycultures (intensive agriculture) such as: sunflower, winter rapeseed, winter wheat, corn, barley, sugar beet, peas, etc. are grown under the conditions of field crop rotation. With the creation of conditions for obtaining the maximum yield, mainly mineral fertilizers and a small amount of organic fertilizers are used. That is, these features of soil use can be reflected to one degree or another in the level of accumulation of heavy metals and trace elements in them. The content of heavy metals and trace elements in black soil typical medium loamy, sod-podzolic sandy loamy and gray medium loamy soils were investigated for their use in homestead plots and field crop rotation for growing various agricultural crops. A higher content of mercury, lead, cadmium, zinc and copper was found in black soil typical medium loamy, gray forest medium loamy and sod-podzolic sandy loamy soils under the conditions of homesteads compared to the soils of field crop rotations. The highest difference in the content of Pb, Hg, Cd, Zn, and Cu in the soils of homestead plots and field crop rotations was found in sod-podzolic sandy soil.

17

Synthesis and Characterization of Zinc Oxide-Zeolite Photocatalyst Nanocomposite for Heavy Metals Degradation

Agustina Tuty Emilia, Ramadhini Tri Karimah, Melwita Elda, Bahrin David, Wijayanti Maria Siswi, Gayatri Rianyza

Journal of Ecological Engineering

|

2024

|

Vol. 25, nr 3

272--281

EN

Heavy metals are the major contributors to pollution due to their enduring presence and poisonous characteristics. Wastewater that contains heavy metals is classified as harmful and has the potential to contaminate the environment. Large-scale disposal of heavy metal discharged into the environment causes significant environmental harm. Commonly seen heavy metals in water deposits include non-biodegradable metals such as cadmium (Cd), copper (Cu), lead (Pb) and iron (Fe). To mitigate the adverse effects of environmental contamination, it is necessary to handle wastewater containing heavy metals properly and optimally. Photocatalysis is a technology that involves the breakdown of pollutants with the use of light. This study aims to synthesize and characterize the nanocomposite of ZnO-Zeolite photocatalyst on the degradation of Cd, Cu, Fe, and Pb heavy metals. The ZnO-Zeolite nanocomposites were characterized by using SEM-EDX, XRD, and BET methods. The degradation caused by exposure to ultraviolet (UV) light occurs within the time of between 60 to 120 minutes, with a pH range of 6–8. The removal of heavy metals proceeds within a time frame of one hour and two hours, resulting in an optimal percentage removal of metals that approaches 100%. The composite showed a surface area of 19.436 m2/g, a pore size of 17.227 Å, and a total pore volume of 0.112 cm3/g. The heavy metals Cu, Fe, and Pb exhibited the highest rates of degradation, reaching their maximum percentages after 60 minutes when exposed to ultraviolet radiation under ideal conditions at varying pH levels (pH 6–8). More precisely, the degradation percentage of Cu metal was 95.4% at pH 7, Fe metal achieved 96.1% at pH 6, while Pb metal obtained 95.5% at pH 8. The Cd metal removal percentage was found to be 98.9% under the conditions of a pH of 8 and an irradiation time of 120 minutes, indicating high effectiveness.

18

Risks of Soil Pollution with Toxic Elements During Military Actions in Lviv

Petrushka Kateryna, Malovanyy Myroslav, Skrzypczak Dawid, Chojnacka Katarzyna, Warchoł Jolanta

Journal of Ecological Engineering

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2024

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Vol. 25, nr 1

195--208

EN

Considering that approximately 20% of the nation’s land remains under the occupation of Russian forces, assessing the impact of the invasion in the midst of ongoing conflict is a formidable challenge. However, even the limited available data offers a distressing glimpse into an ecological catastrophe. The detonation of rockets and artillery shells leads to the generation of a variety of chemical compounds containing elements such as zinc (Zn), copper (Cu), lead (Pb), chromium (Cr), nickel (Ni), and cadmium (Cd). The primary goal of this research was to ascertain the presence of potentially hazardous elements (PTE) within the soil in areas subjected to targeted rocket attacks within the Lviv districts. Soil samples were gathered from four locations in the city of Lviv, which had been impacted by rocket fire, using a concentric circle sampling methodology. Two distinct instrumental techniques, namely X-ray fluorescence spectroscopy (XRF) and Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES), were employed to quantify the concentration of heavy metals within the soil samples. Results revealed that all soil samples exhibited a significant exceedance of the maximum allowable concentrations for titanium (Ti), zinc (Zn), lead (Pb), and nickel (Ni). To assess the leachability and bioavailability of these elements within the soil, various extraction methods were applied in aqueous conditions and in the presence of ammonium citrate. The latter method demonstrated high effectiveness in extracting zinc (Zn), copper (Cu), chromium (Cr), and cadmium (Cd) from the soil. The level of soil contamination was evaluated using diverse criteria, including the contamination factor (Cf), the environmental risk factor (Er), the potential environmental risk index (Ri), the geoaccumulation index (Igeo), and the environmental risk factor (NIPI – National Iron plus Initiative). The computed cumulative environmental impact of all elements (NIPI = 49.001 and NIRI = 54.941, National Investor Relations Institute) underscores the substantial pollution within the surveyed area.

19

Removal of Chromium Contaminated Soils by Electro-Kinetic Method

Jameel Stella Robert, Saeed Khitam Abdulhussein, Hawal Laith Hamdan

Journal of Ecological Engineering

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2024

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Vol. 25, nr 9

182--189

EN

Chromium-contaminated soil is a serious environmental problem that threatens human health and the environment. Electrokinetic technology is used as a promising solution to treat these soils, as it relies on applying an electric field to remove pollutants from the soil. In this study, four experiments were conducted, where experiments have shown that the use of wheat straw as an available, cheap, economical and efficient adsorbent material to prevent the occurrence of reverse osmosis. The results showed that the percentage of removal increased with the increase in the acidity of the medium, that is, as the pH decreased. This is due to an increase in the movement of pollutants as the soil particles become more positively charged, which enhances Attract negative heavy metal ions. This leads to increased movement of heavy metal ions into soil pores, making them more susceptible to transport under the influence of an electric field. The results proved that when using a disinfection solution with a pH of 2, it gave a higher result compared to pH 7 and 12, where the percentage of removal was 78.3%, 62.6 %, and 51.9% respectively. The dissolution of these metals can be enhanced by adding oxalic acid at a constant voltage gradient 1.2 v/cm and an initial concentration of 200 mg/kg. It was noted after the end of the experiment that the percentage of removal reached 81.9%, as the concentration of metals on the cathode side was higher than on the cathode side. The anode, and this is due to the migration of metals under the influence of electromigration to the cathode side, where the chromium concentration was 47 mg/kg at the cathode side, 27 mg/kg at the anode side.

20

Properties of Laboratory Wastewater Having Influence Heavy Metals Treatment Efficiency by Chemical Precipitation

Saengchut Phongthon, Iadtem Natthapong, Wonglertarak Watcharapol, Kokaphan Chanyakarn, Obpat Siraphob, Klaiklung Pattarawadee

Journal of Ecological Engineering

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2024

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Vol. 25, nr 8

72--83

EN

The influence of laboratory wastewater properties on heavy metals treatment efficiency by the chemical precipitation included aluminium sulphate (Al2(SO4)3) and poly aluminium chloride (PAC) using a stepwise multiple regression method. The laboratory wastewater properties showed high acidity approximately 0.75 and a highly turbid approximately 667.41 NTU that TSS (705.48 mg/L), COD (480.00 mg/L) and heavy metals such as Zn did not exceed the standards while Cu, Mn and Cr have levels exceeded the standards. Aluminium sulphate Al2(SO4)3) coagulant has treatment efficiency for reducing heavy metals at a pH of 9.00 to 73.62%, 99.94%, 98.43%, 68.76% and 99.25% for various heavy metals (Cu, Fe, Mn, Zn and Cr) respectively with original laboratory wastewater properties that parameters of laboratory wastewater include TSS, BOD, and pH having the highest influence on heavy metals treatment efficiency. The parameters of laboratory wastewater having the highest influence on heavy metals treatment efficiency when using poly aluminium chloride (PAC) were pH, COD, DO, and BOD when at a pH of 9.00 has treatment efficiency for reducing heavy metals to 73.67%, 99.94%, 98.45%, 69.76%, and 99.26% for various heavy metals (Cu, Fe, Mn, Zn, and Cr) respectively.