Wyniki wyszukiwania - BazTech

1

Reducing the environmental aggressiveness of DMU engines’ exhaust gases by using biodiesel

Vaičiūnas Gediminas, Steišūnas Stasys

Transport Problems

|

2025

|

T. 20, z. 1

167--178

EN

Many research results have been published in scientific works on the effect of rapeseed methyl ester diesel fuel additives on the composition of pollutants. This article ex- amines this effect using multi-criteria decision-making methods. This study also evaluates the aggressiveness of various diesel engine pollutants. The findings identify the optimal RME proportion in diesel fuel, considering the overall harmfulness of pollutants. The results before and after assessing pollutant aggressiveness are compared.

2

Magnetic and optical properties of airborne dust particles nearby coal-fifired power plants in Upper Silesia, Poland: a mineralogical petrographical and chemical approach

Chrysakopoulou Chrysoula, Perleros Konstantinos, Wojtaszek-Kalaitzidi Małgorzata, Papadopoulou Lambrini, Kantiranis Nikolaos, Kalaitzidis Stavros

Journal of Sustainable Mining

|

2025

|

Vol. 24, iss. 2

320--332

EN

Coal mining and exploitation pose certain challenges in terms of environmental management. The objective of this research is the study of airborne dust from Knurow region, Southern Poland, aiming identify the level and the features of anthropogenic particles, mostly in the form of fly ash. Two samples collected from a domestic gutter system were analysed regarding their mineralogical, chemical and petrographical features, emphasizing the magnetic fraction and the carbonized organic particles. The airborne dust contains 22 wt.% of fossil and fresh organic matter, whereas the major mineralogical phase is magnetite. The magnetic fraction (up to 3 wt.%) appears in the form of spheres of simple or complex surface structure, while their average size is 12.7 and 15.8 μm in the studied samples. Lithogenic magnetite is totally absent. The magnetic spheres consist mainly of Fe, whereas Al, Si, Mg and Mn participate in minor amounts. Unburnt coal particles, along with chars, sooty and coke particles, were identified, accounting for 80 vol.% on a mineral matter-free basis, with fresh residues of immature organic matter accounting for the remaining 20 vol.%. Anthropogenic activities in the study area point out a significant environmental footprint to the urban site of the Knurow region.

3

Wybrane zagadnienia związane z projektowaniem separatorów substancji ropopochodnych

Sambor Aleksandra, Ferenc Zbigniew, Kolanek Agnieszka

Instal

|

2025

|

nr 1

36--41

PL

Zanieczyszczenie środowiska wodno-glebowego substancjami ropopochodnymi wynika z powszechnego zastosowania ropy naftowej i jej pochodnych, jako podstawowego surowca do produkcji energii, w przemyśle chemicznym, w zakładach przemysłowych oraz w środkach transportu. Separatory ropopochodnych to urządzenia służące do oddzielania substancji ropopochodnych (takich jak: oleje, paliwa, smary, itp.) od wód opadowych lub ścieków przemysłowych. Ich projektowanie jest kluczowe dla ochrony środowiska, gdyż pozwalają one na skuteczne usuwanie szkodliwych substancji z wód, które mogą przedostać się do środowiska, powodując zanieczyszczenie wód gruntowych oraz powierzchniowych. W analizowanej literaturze nie stwierdzono informacji dotyczącej spójnej, obliczeniowej metody projektowania separatorów. W normie PN-EN 858-1 podano jedynie założenia do doboru tych urządzeń. Projektowanie separatorów związków ropopochodnych wymaga analizy wielu czynników, w tym uwzględnienia właściwych norm i przepisów prawnych, aby zapewnić skuteczność i zgodność z wymaganiami ochrony środowiska. W pracy przedstawiono nową ścieżkę postępowania podczas projektowania separatorów ropopochodnych, która mogłaby stanowić rozszerzenie normy PN-EN 858-1 o wzory stosowane w obliczeniach hydraulicznych tych urządzeń i pozwolić na optymalizację wymiarów separatorów w zależności od wielkości dostępnego terenu do ich montażu, przy zachowaniu wymaganej skuteczności separacji.

EN

Pollution of water and soil environment with oil substances results from the common use of oil and its derivatives, as a basic raw material for energy production, in the chemical industry, in industrial plants and in transportation vehicles. Oil-water separators are devices used to separate petroleum substances (such as oils, fuels, lubricants, etc.) from rainwater or industrial wastewater. Their design is crucial for environmental protection, as they allow the effective removal of hazardous substances from water that can enter the environment, causing groundwater and surface water pollution. No information on a consistent, computational method for designing separators was found in the literature reviewed. PN-EN 858-1 only provides assumptions for the selection of these devices. The design of oil-water separators requires the analysis of many factors, including consideration of relevant standards and legislation to ensure efficiency and compliance with environmental requirements. This paper presents a new path forward in the design of oil-water separators, which could be an extension of PN-EN 858-1 to include the formulas used in the hydraulic calculations of these devices, and allow the sizing of separators to be optimized according to the size of the available land for their installation, while maintaining the required separation efficiency.

4

Assessing solid waste mismanagement in Tripoli, Lebanon, using GIS: a spatial analysis with the SWEPT model

Akkari Douha

GIS Odyssey Journal

|

2025

|

Vol. 5, no. 1

139--166

EN

This paper presents an in-depth analysis of solid waste management in Tripoli, Lebanon, using the SWEPT model a suitability model incorporating multiple criteria to assess potential sites for recycling and waste management initiatives. The SWEPT model considers socio-economic factors, waste characteristics, environmental pollution, and topographical conditions, assigning each location a suitability score that ranges from unsuitable to very high suitability. The model allows for a comprehensive evaluation of potential sites for recycling and waste management infrastructure in Tripoli, taking into account the complex urban and socio-economic conditions that affect the city's waste management system. The model's validation is achieved through a matrix analysis, which compares the suitability of the selected sites for recycling with existing waste collection points. This approach ensures that the chosen sites are both strategically located and viable for implementation. By integrating GIS technology and spatial analysis, the study provides a clear visualization of the relationships between various urban planning challenges and waste management issues in Tripoli. Through these analyses, the paper offers evidence¬based recommendations for improving waste management practices, enhancing the city's infrastructure, and addressing broader environmental concerns.

5

The effects of adopting the anti-smog resolution on air quality – the case study from Krakow

Herman Sergiusz, Będowska-Sójka Barbara, Paccagnini Alessia

Economics and Environment

|

2025

|

No. 2

art. no. 931

EN

We evaluate the impact of Krakow’s Anti-Smog Resolution, which was passed on January 15, 2016, and prohibits the use of coal and wood within the city. We use random forest, interrupted time series, and Bayesian structural time series models to assess air quality gains in terms of PM10, PM2.5, and benzo(a)pyrene concentrations, predicting pollution levels if the legislation had not been implemented. The results show significant reductions in pollutant concentrations: PM10 fell by 23% to 39%, PM2.5 by 23% to 36% and benzo(a)pyrene in PM10 by 39% to 41%, with the highest declines occurring during the heating season. These findings indicate the efficacy of Krakow's legislative strategy, offering evidence-based benchmarks for policymakers and public health officials in other cities considering similar residential heating restrictions to achieve measurable air quality improvements.

PL

Oceniamy wpływ krakowskiej uchwały antysmogowej, która została przyjęta 15 stycznia 2016 r. i zakazuje używania węgla i drewna na terenie miasta. Wykorzystujemy metodę lasu losowego, przerywanych szeregów czasowych i Bayesowskich strukturalnych szeregów czasowych do oceny poprawy jakości powietrza pod względem stężeń PM10, PM2,5 i benzo(a)pirenu, przewidując poziomy zanieczyszczeń w sytuacji, gdyby przepisy nie zostały wdrożone. Wyniki wskazują na znaczne obniżenie stężeń zanieczyszczeń: PM10 spadło od 23% do 39%, PM2,5 od 23% do 36%, a benzo(a)piren w PM10 od 39% do 41%, przy czym największe spadki miały miejsce w sezonie grzewczym. Wyniki te wskazują na skuteczność strategii legislacyjnej Krakowa, dostarczając opartych na dowodach punktów odniesienia dla decydentów politycznych i przedstawicieli służby zdrowia publicznego w innych miastach rozważających wprowadzenie podobnych ograniczeń dotyczących ogrzewania mieszkań w celu osiągnięcia wymiernej poprawy jakości powietrza.

6

Estimation of the flashover voltage of insulator using fuzzy logic (FL)

Becha Habiba, Benguesmia Hani, Bakri Badis, Berrabah Fouad, M’ziou Nassima

Przegląd Elektrotechniczny

|

2024

|

R. 100, nr 7

101--107

EN

The aim of this work is to estimate the flashover voltage of a high-voltage insulator that has been deliberately polluted using fuzzy logic (FL). Initially, experimental experiments on a high-voltage insulator were used to collect a data set that was then used to implement the idea of artificial intelligence. These studies were conducted using varying degrees of fake pollution, namely saline distilled water. Each pollution level indicated the quantity of artificial pollution, measured in millilitres, in each section of the insulator. The collecting database provides flashover voltage measurements associated with varying levels of artificial pollution in each insulator zone and its conductivity. Furthermore, we have used fuzzy logic (FL) to forecast the flashover voltage of the high-voltage insulator and assess the insulating condition of simulated pollution. The suggested prediction model, which is based on Federated Learning (FL), is implemented using MATLAB's graphical user interface. Ultimately, a comparison was conducted between the outcomes achieved by FL and real-world ones. The database used in this comparison differs from that used in concepts based on programming language implementation taken from previous literature. The findings demonstrate the superior effectiveness of the FL approach in predicting the flashover voltage of high-voltage insulators when compared to data acquired from practical testing.

PL

Celem pracy jest oszacowanie napięcia przeskoku izolatora wysokiego napięcia, który został celowo zanieczyszczony przy użyciu logiki rozmytej (FL). Początkowo eksperymenty eksperymentalne na izolatorze wysokiego napięcia służyły zebraniu zbioru danych, który następnie wykorzystano do wdrożenia idei sztucznej inteligencji. Badania te przeprowadzono przy użyciu różnego stopnia fałszywych zanieczyszczeń, a mianowicie destylowanej wody solankowej. Każdy poziom zanieczyszczenia wskazywał ilość sztucznych zanieczyszczeń, mierzoną w mililitrach, w każdej sekcji izolatora. Zbierana baza danych zapewnia pomiary napięcia przeskoku związane z różnymi poziomami sztucznych zanieczyszczeń w każdej strefie izolatora i jego przewodnością. Ponadto wykorzystaliśmy logikę rozmytą (FL) do prognozowania napięcia przeskoku izolatora wysokiego napięcia i oceny stanu izolacji symulowanego zanieczyszczenia. Sugerowany model predykcyjny, oparty na Federated Learning (FL), jest implementowany przy użyciu graficznego interfejsu użytkownika MATLAB-a. Ostatecznie przeprowadzono porównanie wyników uzyskanych na platformie FL z wynikami uzyskanymi w świecie rzeczywistym. Baza danych wykorzystana w tym porównaniu różni się od bazy danych stosowanej w koncepcjach opartych na implementacji języka programowania zaczerpniętych z wcześniejszej literatury. Odkrycia wskazują na wyższą skuteczność metody FL w przewidywaniu napięcia przeskoku izolatorów wysokiego napięcia w porównaniu z danymi uzyskanymi z testów praktycznych.

7

Wstępna analiza wymywalności związków organicznych do wód powierzchniowych z odpadowego destruktu asfaltowego

Gasik-Kowalska Natalia, Grabowski Paweł, Gryszpanowicz Piotr

Materiały Budowlane

|

2024

|

nr 6

36--41

PL

Rozporządzenie Ministra Środowiska z 2021 r. pozwala na zdjęcie statusu odpadu z destruktu asfaltowego. Materiał taki musi jednak spełniać wytyczne dotyczące m.in. zawartości zanieczyszczeń organicznych, w szczególności wielkocząsteczkowych węglowodorów aromatycznych (WWA). Zastosowanie materiału bez odpowiedniej analizy może wiązać się z wieloma zagrożeniami w stosunku do istniejących ekosystemów, w tym wodnych. W artykule zaprezentowano wyniki analizy wymywalności związków organicznych do ekosystemu wodnego. Przedstawiono wyniki badań próbek destruktów asfaltowych pobranych z 10 ulic w obrębie miasta Płocka. Badania realizowano pod kątem analizy właściwości chemicznych mogących stanowić potencjalne zagrożenie dla środowiska.

EN

The Regulation of the Minister of the Environment of 2021 allows for the removal of the waste status from reclaimed asphalt. However, such a material must meet guidelines regarding, among others, the content of organic pollutants, in particular polycyclic aromatic hydrocarbons (PAHs). Unfortunately, the use of material without analysis may involve a number of threats to existing ecosystems, including aquatic ecosystems. In the arcticle the authors present the results of the analysis of the leachability of organic compounds into the aquatic ecosystem. The results of testing samples of reclaimed asphalt for 10 streets in the city of Płock are presented. The research were carried out to analyze chemical properties that could pose a potential threat to the environment.

8

Environmental health impacts of small-scale gold mining in East Indonesia: mercury pollution and nature conservation

Soesilo Tri Edhi Budhi, Hawa Nada Ismita, Nuraeni Nuraeni

Journal of Sustainable Mining

|

2024

|

Vol. 23, iss. 3

251--260

EN

The expansion of small-scale gold mining impacts environmental health and socioeconomic. Research in Bombana District, one of the gold mining centers in eastern Indonesia, was conducted to explore perceptions of the impact of small-scale gold mining on human health and attitudes towards environmental conservation activities related to small-scale gold mining activities. This research uses a quantitative approach with univariate tests to identify respondent characteristics, bivariate tests (Chi-square) to test relationships and frequency differences, and multivariate analysis (regression) to test the direction and magnitude of the relationship. The perception of the impact of small-scale gold mining on human health was not significantly related (p=0.576) to community participation in environmental conservation activities. Attitude variables related to nature conservation are partially significantly related to community participation in environmental conservation activities (p=0.001). Respondents with a poor attitude regarding environmental conservation activities are 17.1 times more likely to not participate in environmental conservation activities than respondents with a good attitude. Although mining activities benefit several sectors, it is undeniably detrimental to the environmental health sector, where one of the critical impacts is the mercury content in the soil and water in the environment around mining. Therefore, local people should take advantage of locally-based nature conservation.

9

Localisation Task in Sewer Networks

Sokáč Marek, Velísková Yvetta

Inżynieria Mineralna

|

2024

|

Vol. 1, no. 1

661--668

EN

Paper deals with the inverse / localisation task in sewer networks. An inverse problem is defined as the process of determining the causal factors from a set of observations. Applying this principle to the water management sector, it is often a matter of determining the location of the source of pollution based on monitored data on the concentration of pollution over time. From a mathematical point of view, to decrease the uncertainty of the inverse task solution, it is necessary to know the location of the source or the concentrations time course of the source (intensity function). In practice, we usually do not know any of these quantities, however, in the case of sewer networks we can accept some assumptions, which allow us to solve this inverse problem. Paper analyses specific conditions applied in the environment of sewer networks and describes proposed method for solving the source localisation task in the sewer network environment. The solution is based on numerical modelling of the pollution spreading in sewer system, accepting some process simplifications as well as assuming some source parameters. Typically, the solution of inverse task requires large and time consuming numerical simulations. This can be disadvantageous after recording the pollution event - a long calculation time reduces the efficiency and operability for the following pollution source reconnaissance. Therefore, our proposed method performs the necessary simulations in advance and the pollution source localisation after recording the pollution event is very fast, using a simple search and comparison in the simulation results database. The proposed method was tested on real sewer system and there were achieving promising results.

10

Okresowa zmienność jakości wód opadowych w zbiornikach przydrożnych oraz możliwość wykorzystania zgromadzonej wody

Zubala Tomasz

Gaz, Woda i Technika Sanitarna

|

2024

|

Nr 1

24--31

PL

W wielu miejscach na świecie obserwuje się rosnące deficyty wodne i problemy z zaspokojeniem niektórych potrzeb. Z tego powodu, coraz częściej wykorzystywana jest woda szara i woda deszczowa. Zbiorniki gromadzące spływy z powierzchni uszczelnionych są rozpatrywane, jako potencjalne źródła wody dla niektórych odbiorców. W pracy dokonano oceny stopnia zanieczyszczenia oraz zmienności jakości wód deszczowych gromadzonych i podczyszczanych w uszczelnionych stawach przy nowych drogach w aglomeracji lubelskiej (południowo-wschodnia Polska). Oceniono również potencjalne zagrożenia i możliwości ponownego użycia wód. W badaniach uwzględniono zmiany natężenia ruchu samochodowego i warunków pogodowych. Badania jakościowe prowadzono sezonowo. Analizami objęto m.in. wybrane wskaźniki fizyczne, biogenne i zasolenia. Wykazano dużą zmienność koncentracji zawiesin ogólnych, NO2-, NH4+, PO43-, TP, i Cl- (74-216%). W niektórych terminach pomiarowych stwierdzono niepokojące wartości przewodności, pH, zawiesin, TP, Cl- i ChZT. W warunkach badań zmienność jakości wód deszczowych była większa w pierwszej fazie eksploatacji systemu zbiorników, a poziom średniego zanieczyszczenia stabilizował się w ciągu kilku lat od jego wybudowania. Zmiany natężenia ruchu samochodowego nie wpływały znacząco na wielkość zanieczyszczenia retencjonowanych wód. Duża zmienność zanieczyszczenia wód utrudnia precyzyjne wyznaczanie okresów, w których ich wykorzystanie wiąże się z najmniejszym ryzykiem. Zarządzanie wodami deszczowymi powinno opierać się na wnikliwych analizach ich jakości (stały monitoring) oraz ocenie ewentualnego zagrożenia dla środowiska.

EN

In many places around the world, there are growing water deficits and problems in satisfying certain needs. For this reason, gray water and rainwater are increasingly used. Reservoirs collecting runoff from impervious surfaces are considered as potential sources of water for some recipients. This paper evaluates the pollution level and variations in the quality of rainwater collected and pre-treated in sealed ponds located next to new roads in the metropolitan area of Lublin (south-eastern Poland). Potential threats and possibilities of water reuse were also assessed. The studies took into account changes in traffic intensity and weather conditions. Qualitative research was conducted seasonally. The analyzes included, among others: selected physical, biogenic and salinity indicators. High variations in the concentration of total suspended solids, NO2-, NH4+, PO43-, TP, and Cl- were observed (74-216%). On some measurement dates disturbing conductivity, pH, suspended solids, TP, Cl– and COD values were found. Under the test conditions, variations in stormwater quality was greater at the first stage of using the system of reservoirs, and the mean level of pollution stabilized several years after its construction. Changes in traffic intensity did not significantly affect on the degree of contamination of the stored water. The high variability of water pollution makes it difficult to precisely identify periods in which the use of ponds poses the lowest risk. Rainwater management should be based on thorough analyses of water quality (constant monitoring) and the evaluation of possible threats to the environment.

11

Synergistic governance of digital economy development and carbon reduction: evidence from Chinese cities

Ma Nian, Deng Ying

Ecological Chemistry and Engineering. S

|

2024

|

Vol. 31, nr 2

203--213

EN

As a fundamental driving factor for high-quality advancement, elucidation remains requisite regarding the potential of the digital economy (DE) in achieving conjoined governance aimed at pollution reduction and carbon reduction (PCR). This study conducts a comprehensive analysis of the nexus between digital economic development (DED) and carbon mitigation. Empirical analyses are conducted utilising panel data encompassing Chinese municipalities from 2011 to 2020, enabling a quantitative evaluation of the influence exerted by DED on the concerted governance of carbon reduction and haze mitigation. The results emphasise that: DED cultivates conducive circumstances for curtailing carbon emissions and addressing haze pollution, with subsequent robust testing reinforcing the enduring significance of DED’s impact on PCR. Heterogeneity analysis reveals the pronounced effect of DED on PCR, particularly discernible in provincial capitals, eastern municipalities, as well as first and second-tier urban centers, alongside metropolises of significant magnitude. The reciprocal impact of DED on PCR predominantly stems from industrialisation synergies, primarily attributed to the optimisation and advancement of industrial structure, concomitant with enhancements in production efficiency.

12

Does the chief executive officer green experience contribute to the low-carbon transition of the organisation?

Xiong Xiaoliang

Ecological Chemistry and Engineering. S

|

2024

|

Vol. 31, nr 2

215--224

EN

From the perspective of chief executive officer (CEO) green experience, this paper delves into the catalysts propelling corporate transitions toward lower carbon footprints, empirically evaluating these factors using listed company data from 2011 to 2020. The study reveals that CEO green experience contributes to diminishing corporate carbon intensity, thereby fostering the shift towards lower carbon operations. Notably, this finding persists even after subjecting the analysis to robustness tests. However, the impact of CEO green experience, while promoting corporate low-carbon transitions, is comparatively lesser than other influential factors. This discrepancy exhibits distinct variations within the ownership structure and pollution attributes of companies. Specifically, the significance of CEO green experience is more pronounced in non-state-owned enterprises and heavily polluting firms.

13

The problem of cold start emissions from vehicles

Laskowski Piotr, Zimakowska-Laskowska Magdalena, Matej Jan, Wiśniowski Piotr

Combustion Engines

|

2024

|

R. 63, nr 4

43--51

EN

The progression of passenger vehicles is progressing, and regulations are continually being revised, resulting in a decrease in car exhaust emissions. The European Commission has revised the RDE test procedure to include exhaust emissions during a cold start as part of package 3. The article carried out simulations using COPERT software, which uses tests based on WLTP, assuming ambient temperatures from -10°C to +20°C, at intervals of 5oC. This paper aims to present the results of mathematically modelling the influence of ambient temperature on the cold start emissions of carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4), nitrogen oxides (NOx), non-methane volatile organic compounds (NMVOC), hydrocarbons (treated as volatile organic compounds - VOC), total particulate matter (TSP) and particle number (PN) in passenger cars and light duty vehicles. The modelling results show that a change in ambient temperature significantly affects carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4), nitrogen oxides (NOx), non-methane volatile organic compounds (NMVOC), hydrocarbons (treated as volatile organic compounds - VOC), total particulate matter (TSP) and particle number (PN) in cold start emissions.

14

Narażenie strażaków na substancje chemiczne podczas pożaru

Krzemińska Sylwia, Szewczyńska Małgorzata, Jachowicz Anita

Bezpieczeństwo Pracy : nauka i praktyka

|

2024

|

nr 5

12-15

PL

Oddziaływanie szkodliwych substancji chemicznych, uwalnianych podczas pożarów, powoduje narażenie zdrowia strażaków. Substancje te - zwłaszcza wielopierścieniowe węglowodory aromatyczne, lotne związki organiczne oraz substancje per- i polifluoroalkilowe - mogą zwiększać ryzyko zachorowania na choroby nowotworowe, co potwierdzają liczne badania. Substancje chemiczne występujące w warunkach pożaru osadzają się w postaci zanieczyszczeń na zewnętrznej powierzchni odzieży ochronnej strażaka i przedostają się do wewnętrznych warstw. Z tego względu po przeprowadzonych działaniach ratowniczych odzież ochronna wymaga odpowiedniego czyszczenia, które pozwala na usunięcie znacznej ilości substancji chemicznych oraz zapobiega ich oddziaływaniu na skórę i układ oddechowy. W artykule scharakteryzowano narażenie strażaków na substancje chemiczne (będące produktami spalania i emitowane podczas pożarów) oraz opisano proces czyszczenia odzieży ochronnej z zanieczyszczeń chemicznych.

EN

The exposure to harmful chemicals released during fires is hazardous for the health of firefighters. These substances - including in particular polycyclic aromatic hydrocarbons, volatile organic compounds, and per- and polyfluoroalkyl substances - can increase the risk of cancer, as confirmed by numerous research studies. The chemicals found in fire conditions settle in the form of contaminants on the outer surface of the firefighter’s protective clothing and permeate to the inner layers. For this reason, appropriate cleaning of special clothing, which allows to remove a significant amount of chemicals and prevents their impact on the skin and respiratory system, is required after rescue operations. The paper characterizes the exposure of firefighters to chemical substances (combustion products and emitted during fires) and describes the process of cleaning protective clothing from chemical contaminants.

15

Wetland Ramsar site in Tunisia (Soliman brackish lagoon) : status, threats, and protection

Elarbaoui Soumaya, Smiri Moez

Archives of Environmental Protection

|

2024

|

Vol. 50, no. 3

100--108

EN

The Ramsar wetlands are crucial for global ecology. They are essential for preserving the balances of ecosystems. The aim of this work is to prevent the current situation of Sebkha of Soliman (880 ha; 36°43'N, 010°29'E; Nabeul, Tunisia) from deteriorating further. It is one of the few wetlands that receives water from both the sea, Wadi, and a wastewater treatment plant. According to a study of the organic pollution in the Sebkha's waters and sediments conducted in March 2022, there are high concentrations of suspended matter, that exceed 80 mg/L. The total organic matter exceeds 110 g/kg DW, and the biological oxygen demand exceeds 56 mg O2/L. Additionally, there are more than 24*103 bacteria per liter., We also identified mineral pollution primarily caused by nitrate (2.4 g/kg DW), phosphorus (2.42 g/kg DW), and iron (40 mg/L). Pollution is dispersed over three areas: the least polluted area is near the sea, the most polluted area is in the center of Sebkha, and the area farthest from the sea has medium pollution levels. The distribution of pollutants in the Sebkha is influenced by the contribution of pollutants and the self-purification by seawater.

16

An overview : fate and analysis of marine microplastics with insights into microfluidics, biofilms, and future ecological threats

Ganguly Mahima, Valiamparampil Jithu, Somashekara Divyashree, Mulky Lavanya

Archives of Environmental Protection

|

2024

|

Vol. 50, no. 3

26--35

EN

Pollution associated with microplastics (MP) over time is becoming a genuine cause of concern because these micro-sized plastics possess the ability to accumulate toxic contaminants of diverse types. Their propensity to absorb or adsorb pollutants from the surroundings increases the toxicity of microplastics. Multiple root causes lead to the accumulation of microplastics in aqueous ecosystems, necessitating specialized techniques for investigating, handling, and disposing of them. This overview elaborates on the several modes of degradation of microplastics in aquatic systems. It further provides insights into the novel ‘Microfluidics’ technique for detecting microplastics in marine environments. Additionally, as a rising hope for the degradation of microplastics through biofilm formation, distinct types of bacteria found in marine habitats are discussed in this paper. Finally, this review elucidates the problems associated with microplastic pollution in aquatic ecosystems and explores methods for their safe disposal in the future.

17

Introduction to the Special Issue: Geophysics and remote sensing for resources and ecosystem sustainability in an environmentally constrained world

Jrad Abir, Dhaoui Mohamed, Sarris Apostolos, Gabtni Hakim, Papadopoulos Nikos

Acta Geophysica

|

2024

|

Vol. 72, no. 2

1251--1256

EN

The 4th Atlas Georesources International Congress (AGIC), convened in Hammamet, Tunisia in March 2023, provided a significant forum for scholars, scientists, and practitioners to converge and deliberate on the intricate challenges surrounding resource management. Themed “Geoscience Innovations For Resource Management: Socio-Economic Challenges In An Environmentally Constrained World,” the congress spotlighted five pivotal domains: hydrology and water resource management, applied geophysics in geological exploration and structural analysis, environmental pollution, climate and atmospheric studies, and renewable energy and climate modeling. These thematic areas serve as focal points for grappling with the multifaceted challenges posed by contemporary resource management paradigms.

18

Assessment of daily concentrations of air pollutants over four stations of Andhra Pradesh, India, during 2019-2022

Gogineni Rajesh, Umakanth Nandivada, Ramakrishna Yarlagadda, Veeraswamy Parise

Acta Geophysica

|

2024

|

Vol. 72, no. 2

1227--1249

EN

In recent years, pollution levels have increased to dangerous levels in several Indian cities. These levels are posing a severe threat to human’s health. Using the data from Central Pollution Control Board (CPCB), the current work focuses on highlighting the primary air pollutants in various regions such as Visakhapatnam (VSK), Hyderabad (HYD), Amaravati (AMV), and Tirupati (TPTY). Data from the Zoo Park area were used to study the location of HYD. Sulphur dioxide (SO2), carbon monoxide (CO), nitrogen dioxide (NO2), nitrogen oxides (NOX), particulate matter with particles less than 2.5 gm in diameter (PM2.5), particulate matter with particles less than 10 gm in diameter (PM10), and ozone (O3) are the air pollutants used for analysis in this work. An attempt was made to research the meteorological factors that contribute to the rising levels of air pollution between 2019 and 2022. Wind speed (WS), temperature (TEMP), relative humidity (RHUM), rainfall (RF), and solar radiation (SR) are the meteorological variables used in the analysis. The prediction of PM2.5 and PM10 was done using artificial neural network (NN) method. The NN method's outcomes show strong correlation in the forecasting of air pollution across four locations. The VSK station exhibited a high correlation of 91.29%, whereas TPTY station had a low correlation of 82.1%, based on CPCB PM2.5 observation and NN technique. The VSK station revealed a high correlation of 90.30%, whereas TPTY station had a low correlation of 81.61%, based on CPCB PM10 observation and NN technique.

19

Nowe zanieczyszczenia w oczyszczalniach ścieków i środowisku wodnym

Rosińska Agata

Wodociągi - Kanalizacja

|

2023

|

nr 2

8--15

20

Groundwater contamination risk assessment in the first exploitable aquifer stratum within Bodzentyn municipality, Świętokrzyskie Voivodeship

Nartowska Edyta

Structure and Environment

|

2023

|

Vol. 15, no. 4

269--278

EN

The objective of this study is to assess the threat of contaminating groundwater originating from the first exploitative aquifer level in the municipality of Bodzentyn within the Świętokrzyskie Voivodship. The analysis included 23 representative groundwater intakes from MHP 816 Bodzentyn sheet. The various potential sources of groundwater contamination were identified. The intrinsic vulnerability of the first aquifer to contamination and the water recharge area were determined. In the results intakes potentially threatened by anthropogenic pollution were indicated. Providing information on the potential risks of groundwater contamination will help better plan environmental and decision-making activities in this area. The results can serve as a basis for policy development, land use and sustainable resource management in the municipality of Bodzentyn.

PL

Celem niniejszego opracowania jest ocena zagrożenia zanieczyszczeniem wód podziemnych pochodzących z pierwszego eksploatowanego poziomu wodonośnego w gminie Bodzentyn na terenie województwa świętokrzyskiego. Analizą objęto 23 reprezentatywne ujęcia wód podziemnych z arkusza MHP 816 Bodzentyn. Zidentyfikowano różne potencjalne źródła zanieczyszczenia wód podziemnych. Określono wewnętrzną podatność pierwszego poziomu wodonośnego na zanieczyszczenie oraz obszar zasilania. W wynikach wskazano ujęcia potencjalnie zagrożone zanieczyszczeniami antropogenicznymi. Dostarczenie informacji na temat potencjalnego ryzyka zanieczyszczenia wód podziemnych pomoże lepiej zaplanować działania środowiskowe i decyzyjne na tym obszarze. Wyniki mogą służyć jako podstawa do rozwoju polityki, zagospodarowania przestrzennego i zrównoważonego zarządzania zasobami w gminie Bodzentyn.