Wyniki wyszukiwania - BazTech

1

Degree of complexation of microelement ions by biodegradable IDHA chelator in water and simulated fertilization environment

Klem-Marciniak Ewelina, Biegun Marcin, Hoffmann Krystyna, Hoffmann Józef

Polish Journal of Chemical Technology

|

2023

|

Vol. 25, nr 4

61--66

EN

The degree of complexation of microelement ions by the biodegradable chelating agent - IDHA was examined in the work. The tests were carried out in water and in a simulated fertilizer environment. In order to compare the obtained results, tests were also carried out for the commonly used EDTA. The performed analyzes allow to determine the influence of the presence of compounds containing macroelements on the degree of binding of microelement ions by the biodegradable IDHA and EDTA chelators. The obtained results make it possible to determine the optimal conditions for the chelation of cations by IDHA, which in the future may be used in the production of micronutrient fertilizers on a large scale.

2

Application of the Thermophilic Fermentation Method to Obtain Environmentally Friendly Organic Fertilizer

Bayazitova Zulfiya E., Kurmanbayeva Aigul S., Tleuova Zhulduz O., Temirbekova Nurgul G.

Journal of Ecological Engineering

|

2023

|

Vol. 24, nr 4

202--216

EN

In this study, the authors obtained samples of biological fertilizer by thermophilic fermentation of substrates of different compositions. Two types of effluent were studied in the experiment: food plant waste with the addition of cattle manure and liquid pig manure with litter cattle manure. To activate the process of obtaining fertilizer, the Agrarka biological preparation was added containing a complex of microorganisms and bacteria that accelerate the decomposition process. A detailed chemical analysis of the liquid and solid fractions of the raw materials and the obtained products was carried out for the content of total phosphorus (P), carbon (C), potassium (K), nitrogen (N), ammonium nitrogen (NH4+), organic matter, dry matter, cadmium (Cd), cobalt (Co), manganese (Mn), copper (Cu), nickel (Ni), mercury (Hg), lead (Pb), chromium (Cr), zinc (Zn), and arsenic (Ar). The indicators of acidity and ash content were determined and microbiological analysis was carried out. The obtained results showed that the thermophilic temperature regime of fermentation accelerated the decomposition process, positively affected the total content of the main nutrients in the studied substrates, and negatively affected the vital activity of microorganisms. In two types of effluents, there was a significant increase in the level of ammonium nitrogen by up to 60%, a decrease in the total carbon content by 15–30%, and dry and organic matter by 10–12% in both liquid and solid phases. However, in the effluent from food plant waste with the addition of cattle manure, the indicators increased by 13% in total carbon and by 8.2% in dry matter, and the ash content was 3 times lower than in the second effluent. Thus, thermophilic fermentation obtained two types of effluents with high-quality indicators corresponding to environmental and sanitary standards, since the content of microorganisms and heavy metals did not exceed the permissible limits.

3

The Influence of Chemical Amelioration on the Structure of the Phosphate Fund of Retisol of Western Polissia in Ukraine

Polovyy Volodymyr, Yashchenko Liudmyla, Lopushniak Vasyl, Kolesnyk Tetiana

Ecological Engineering & Environmental Technology

|

2023

|

Vol. 24, iss. 5

100--110

EN

The study of changes in the structure of the phosphate fund of retisol after two rotations of a 4-field field crop rotation under the influence of the introduction of dolomite (CaMg(CO3)2) and limestone (CaCO3) flour in different doses before the start of the first rotation was carried out in the stationary experiment of the Institute of Agriculture of the Western Polissia of Ukraine. The dose of limestone materials is calculated on the basis of hydrolytic acidity (Hh) 2.80–2.97 mol/kg: for dolomite flour 0.5 Hh – 2.2 t/ha; 1.0 Hh – 4.7; 1.5 Hh – 6.7 t/ha; for limestone flour 1.0 Hh – 4.9 t/ha. The saturation of crop rotation with mineral fertilizers was N112Р87К105. The general background of the experiment was the annual application of the non-marketable part of the crop at a dose of 6.0 t/ha of biomass. The purpose of the work is to investigate the directionality of the transformation of the forms and different fractions of retisol phosphorus under the influence of liming against the background of systematic fertilization after the completion of the second crop rotation rotation. Research has established that under the influence of the introduction of meliorants, the share of mineral phosphorus compounds (P inorganic) fluctuated widely according to the experiment options (47.0 – 67.4% of P total), and organic – in the range of 28.5–37.5% P total. Liming against the background of fertilizer application also caused certain changes in the proportions between different forms of phosphorus. The main part (55.5–70.7%) of inorganic P is aluminum phosphates (Al-P) and iron phosphates (Fe-P). Liming with increasing doses of meliorants significantly (р = 0.05) affected the reduction of the total share of Al-P and Fe-P compared to the control and application of only mineral fertilizers, and also contributed to a significant increase in the share of Ca-P calcium phosphates (р = 0.01). At рНKCl 4.0–6.0, the content of P inorganic fractions was distributed in the order from maximum to minimum indicators: Al-P > Fe-P > Р soluble >Са-Р. Neutralization of the acidity of the soil solution also contributed to a significant increase in the contentof the soluble fraction of phosphorus (P soluble) to 4.9-5.4% of total P (р = 0.05), and the level of availability oflabile phosphorus compounds of the studied soil increased and was noted as high. The established features of thetransformation of the phosphate pool in retisol under the influence of the introduction of chemical ameliorantsindicate an increase in the share of bioavailable phosphorus compounds, significant changes in the conditions ofphosphorus nutrition of crop rotation crops and a change in the functional stability of the agroecosystem in general.

4

Fertiliser properties of wastewater sludge and sludge ash - a case study from the Finnish forest industry

Oksanen Juha, Pöykiö Risto, Dahl Olli

Ecological Chemistry and Engineering. S

|

2023

|

Vol. 30, nr 1

63--78

EN

In this case study we compared the fertiliser properties of an industrial wastewater treatment sludge and a sludge ash to the requirements of the Finnish Fertiliser Product Decree. The sludge was obtained from the activated sludge wastewater treatment plant of a Finnish non-integrated pulp mill. The sludge was furthermore incinerated at a laboratory in a muffle furnace (850 °C) to obtain sludge ash. The total Cd (4.9 mg/kg d.m.) concentration in the pulp sludge exceeded the Finnish limit value (1.5 mg/kg d.m.) for fertiliser products used in agriculture. In the sludge ash, the total concentration of Cd (39 mg/kg; d.m.) exceeded the Finnish limit value (25 mg/kg d.m.) for ash fertilisers used in forestry. These results restrict the potential reuse options of these residues. However, from the utilisation point of view, the enrichment of essential plant macro-nutrients was most notable, resulting to the following total concentrations of these elements in the sludge ash: P (26,000 mg/kg d.m.), S (40,000 mg/kg d.m.), K (11,000 mg/kg d.m.), Ca (83,000 mg/kg d.m.) and Mg (10,000 mg/kg d.m.). Therefore, we conclude that, the converting of sludge into ash may promote the reuse of this wastewater treatment residue to a more value-adding fertiliser by-product to be used as a soil improver and growing medium in landscaping or landfills sites or other closed industrial areas, where heavy metal limit values for fertilisers are not applied in Finland.

5

Mathematical models use to yield prognosis of perennials on marginal land according to fertilisers doses

Hryniewicz Marek, Strzelczyk Maria, Helis Marek, Paszkiewicz-Jasińska Anna, Steinhoff-Wrzesniewska Aleksandra, Roman Kamil

Journal of Water and Land Development

|

2021

|

no. 51

233--242

EN

Models describe our beliefs about how the world functions. In mathematical modelling, we translate those beliefs into the language of mathematics. Mathematical models can yield prognose on the base of applied fertiliser dose. In this work results of finding yield mathematical model according to fertiliser (nitrogen) dose for perennials (willowleaf sunflower Helianthus salicifolious, cup plant Silphium perfoliatum and Jerusalem artichoke Helianthus tuberosus) on marginal land are presented. Models were described as normalised square equations for dependence between yield and fertiliser doses. Experiments were conducted in lisymeters and vases for willowleaf sunflower and cup plant. For Jerusalem artichoke experiments were done in vases only. All experiments have been doing during two years (2018 and 2019) for different fertilisers doses (45, 90 and 135 kg N∙ha-1) in three repetitions. From simulations maximal yield could be achieved for following fertiliser doses – willowleaf sunflower 104 kg N∙ha-1, cup plant 85 kg N∙ha-1 and Jerusalem artichoke 126 kg N∙ha-1.

6

Comparison of Untreated, Lime-Stabilised and Composted Wastewater Sludges from a Pulp, Board and Paper Mill Integrate as a Fertiliser Product

Oksanen Juha, Pöykiö Risto, Dahl Olli

Journal of Ecological Engineering

|

2021

|

Vol. 22, nr 5

47--58

EN

In this study, the physical and chemical properties of untreated, lime-stabilised and composted wastewater sludges from a Finnish pulp, board and paper mill integrate were compared in order to assess their fertiliser properties based on the requirement of the Finnish Fertilizer Product Decree. Furthermore, the extraction properties of heavy metals in the sludges were assessed by the three-stage sequential extraction procedure of the Community Bureau of Reference (BCR) and the solubility indices for heavy metals were calculated in order to evaluate the release potential of elements from the sample (sludge) matrix. The results of this study indicated that the total heavy metal (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) concentrations in all sludges were lower than the statutory Finnish limit values for fertiliser products. However, the untreated sludge required either lime-stabilisation or composting in order to fulfil the Finnish maximum concentrations of pathogens (coliforms and Escherichia coli) for fertiliser products.

7

Physicochemical analysis of sew age sludge from the Strzelce Opolskie waste - water treatment plant (Opole province, Poland)

Wacławek W., Bożym M.

Chemia i Inżynieria Ekologiczna

|

2000

|

Vol. 7, nr 11

1243-1251

EN

The results of studies on sewage sludge from the Strzelce Opolskie waste-water treatment plant were presented. The sewage sludge coming from this plant is subjected to liming (80 kg per Mg of wet sludge). Physicochemical analysis concerned the following parameters: pH, dry matter content, organic matter content and contents of total nitrogen, total phosphorus, total organic carbon, as well as the COD value, heavy and light metal contents (total contents and contents of different chemical forms). The testing has been perfomed for a year and a half, the samples were taken every two months. The possibilities of environmental utilization of the sewage sludge have been discussed on the grounds of the data obtained.

PL

Przedstawiono badania osadów ściekowych z oczyszczalni ścieków w Strzelcach Opolskich. Osad pochodzący z tej oczyszczalni poddaje się wapnowaniu (80 kg/Mg mokrego osadu). Analiza fizykochemiczna dotyczyła następujących parametrów: zawartości: masy suchej, substancji organicznej, azotu ogólnego, fosforu ogólnego, węgla organicznego (TOC), metali ciężkich i lekkich (zawartość ogólna i podział na frakcje za pomocą analizy specjacyjnej) oraz wartości pH i ChZT. Badania prowadzono przez półtora roku, próby pobierano co 2 miesiące. Określono możliwość wykorzystania przyrodniczego tych osadów na podstawie wyników wykonanych analiz.

8

Wpływ nawozu organiczno-mineralnego Rekulter na fitoprzyswajalność Zn, Pb, Cd i Ni

Tymińska-Zawora K.

Inżynieria Środowiska / Akademia Górniczo-Hutnicza im. S. Staszica w Krakowie

|

1999

|

T. 4, z. 1

55-60

PL

W 1996 roku na glebie zanieczyszczonej metalami ciężkimi w ilościach: cynku - 6000 mg, ołowiu 1489 mg, kadmu 295 mg i niklu 17 mg/kg s.m. przeprowadzono doświadczenie wazonowe z różnymi dawkami Rekultera - nawozu sporządzonego na bazie węgla brunatnego. Rośliną testową była życica wielokwiatowa (Lolium multiflorum L.). Stwierdzono wyraźny wpływ zastosowanego nawozu na obniżenie zawartości niklu i ołowiu w częściach nadziemnych rośliny, dużo mniejszy w korzeniach, w których gromadziła się przeważająca ilość badanych metali. Nie odnotowano na tle nawożenia mineralnego, korzystnego wpływu Rekultera na wysokość plonowania badanej rośliny.

EN

In 1996 on soil containing 6000 mg Zn, 1400 mg Pb, 295 mg Cd and 17 mg Ni per 1 kg of dry mass there was made an experiment with different doses of Rekulter - fertiliser on the base of brown coal. In the experiment was used plant Lolhim Multiflorum L. Considerable influence of the Rekulter fertiliser was noticed, on the lowering of Ni and Pb contents in overground portions of plant, not so strong influence in roots, where the heavy metals were accumulated. There was no sign of profitabłe influence of Rekulter on the size of crop of Lolium Multiflorum L.