Leaching Of Cd Research Articles

Synergistic immobilization of potentially toxic elements (PTEs) by biochar and nanoparticles in alkaline soil

Biochar and nanoparticle (NP) have the ability to sorb potentially toxic elements (PTEs) from soil and reduce toxicity and leaching into water bodies. However, there is need to tailor biochar formulations to soil types. In this study, we investigate the mobility and chemical forms of Cd, Cr, Cu, Ni, and Zn in a spiked, alkaline soil after amendment with combination of NPs (nano-Fe (NF), nano-clay (NC)) and biochars (almond shell 500 °C, walnut shell 400 °C) in different doses (0, 2.5, 5, and 10%). Many previous studies concluded biochar immobilized PTEs due to an increase in soil pH, which can be disregarded here (soil pH 7.9). In a twenty-week column leaching experiment biochar addition significantly decreased PTE leaching and NP addition further immobilized PTEs in most cases. On average almond biochar more effectively reduced Zn leaching and walnut biochar was more effective in decreasing the leaching of Cd, Cr, and Ni (e.g. 5% biochar reduced Cr leaching by 68%). Copper was immobilized effectively by both biochars. Nano-clay combined with walnut biochar performed best in all treatments, in particular for Cd, Ni, and Zn (e.g. 10% walnut biochar only and in combination with NC reduced Zn leaching by 14.2% and 58.5%, respectively). After amendment, PTEs were present in the Fe-Mn oxides, organic and residual fractions and less in the exchangeable fraction, reducing PTE availability and leachability. The results demonstrate that even for cationic PTEs that behave similarly in the environment optimal biochar-mineral formulations can differ.

Leaching behavior of metals from iron tailings under varying pH and low-molecular-weight organic acids

The migration of metals (e.g., Fe, Cd, Co, Cr, Cu, Mn, Ni, and Zn) in both of iron tailings under different pH leachates was studied by laboratory static leaching experiments. The results indicated that Fe showed the highest leaching concentration at an initial pH of 2, reaching 16.19 and 51.72 mg L−1 in the Qian'anling (Q0) and Majuanzi (M0) iron tailings, respectively. Metal ions manifested a strong pH dependence. In addition, the leaching behavior of Cd, Cr, Fe, and Cu for the two tailings was also evaluated under leaching by three low-molecular-weight organic acids (LMWOAs). The results indicated the leaching of Cd and Fe followed the order of citric acid > malic acid > oxalic acid and that the leaching order for Cr and Cu was citric acid > oxalic acid > malic acid. The concentration of Fe was low in 5 mM oxalic acid leaching for 20 days because of the hydrolysis precipitation of iron ions and the complexation with organic ligand. The crystal lattice on the tailings was significantly damaged after leaching. The CO32- peak appeared in M0 with different treatments, and the proportion of COO- fitting peak areas increased markedly after leaching with LMWOAs.

Long-term leaching of As, Cd, Mo, Pb, and Zn from coal fly ash in column test.

Globally, millions of tons of coal fly ash (CFA) are generated per year, and the majority of this material is usually stored in stock piles or landfills, and in a long-term, it can be an environmental hazard if rainwater infiltrates the ashes. Long-term leaching studies of Brazilian ashes are scarce. The purpose of this study was to evaluate arsenic, cadmium, molybdenum, lead, and zinc leaching behavior from a Brazilian CFA by a column experiment designed to simulate field conditions: slightly acid rain considering seasonality of precipitation and temperature for a long-term leaching period (336 days). All elements were leached from CFA, except lead. Elements leaching behavior was influenced by leaching time, leaching volume, and temperature. Higher leachability of As and Cd from CFA during warm and wet season was observed. Results indicate a potential risk to soil and groundwater, since ashes are usually stored in uncovered fields on power plants vicinity.

The Impact of Physical Properties on the Leaching of Potentially Toxic Elements from Antimony Ore Processing Wastes.

This study reports on the assessment of the impact of antimony mine wastes from Xikuangshan (XKS) Antimony Mine in Lengshuijiang City, Hunan Province. We focus on the leaching of a number of potentially toxic elements (PTEs) from residues from the processing of antimony ore. The PTE content of ore processing waste and solutions generated by leaching experiments were determined for a suite of PTEs associated with the ore mineralization. These were Sb, As, Hg, Pb, Cd and Zn. As anticipated, high concentrations of the PTEs were identified in the waste materials, far exceeding the standard background values for soil in Hunan Province. For Sb and As, values reached >1800 mg·kg−1 and >1200 mg·kg−1, respectively (>600 and >90 times higher than the soil background). The leaching of Sb, As, Hg, Pb, Cd and Zn decreased with an increase in grain size and leachable portions of metal ranged between 0.01% to 1.56% of total PTE content. Leaching tests identified the release of PTEs through three stages: a. alkaline mineral dissolution and H+ exchanging with base cation; b. oxidation and acid production from pyrite and other reducing minerals; and c. the adsorption and precipitation of PTEs.

Effective Role of Biochar, Zeolite and Steel Slag on Leaching Behavior of Cd and Its Fractionations in Soil Column Study.

Remediation of cadmium (Cd) from contaminated soils is considered a complicated task of environmental safety. A column leaching experiment was planned to estimate the influence of biochar (BC), zeolite (ZE) and steel slag (SL) at 1.5% and 3% application rate on Cd leaching behavior and chemical fractionation in contaminated soil. A sequential extraction procedure, the European Community Bureau of Reference (BCR), Toxicity Characteristic Leaching Procedure (TCLP) and NH4NO3 were performed after leaching was completed. The soluble portion of Cd was decreased by 36.3%, 18.4% and 28.7% and Cd contents in leachate were decreased by 44.8%, 30% and 31.3% after BC, ZE and SL addition at 3% rate, respectively over control soil. The greater reduction in TCLP extractable Cd was observed by 29.6% with BC and 22.4% with ZE and 25.7% with SL at 3% application rate. Overall, biochar can be considered an efficient soil amendment to reduce Cd leaching as well as increased its stabilization within soil profile.

Uptake and Leaching of Cu, Cd, and Cr after EDTA Application in Sand Columns Using Sorghum and Pearl Millet

Uptake and Leaching of Cu, Cd, and Cr after EDTA Application in Sand Columns Using Sorghum and Pearl Millet

Influence of Anatase Content in Sediment and NaCl Concentration in the Leaching Solution in the Leaching of Cd(II) from Artificially Contaminated Sediment

Influence of Anatase Content in Sediment and NaCl Concentration in the Leaching Solution in the Leaching of Cd(II) from Artificially Contaminated Sediment

The role of anatase impurity in the leaching of Cd(II) from contaminated kaolinite

This study was performed to enhance the understanding of the Cd(II) leaching mechanism from contaminated kaolinite with a focus on the role of anatase impurities. Experimental data obtained from titration and batch Cd(II) adsorption experiments were analyzed using a surface complexation model coupled with ion exchange reaction. Anatase showed significantly higher Cd(II) adsorption capability than those of kaolinite and goethite (α-FeOOH), with inner-sphere complex formation as the dominant adsorption mechanism. Under acidic and near-neutral conditions, kaolinite absorbs Cd(II) mainly via outer-sphere complex formation, while both outer-sphere and inner-sphere complex formation are important at higher pH. Binding constants obtained from modeling analyses were then used to predict the leaching extent of Cd(II) from contaminated kaolinite with different contents of anatase impurity at pH 4.0–7.0. The experimental data and model predictions consistently showed that the leaching of Cd(II) decreased with increasing anatase content and this trend was more significant under acidic conditions. These results showed that the content of anatase impurity is a factor controlling the leaching extent of Cd(II) from kaolinite when exposed to acid rain.

Comprehension of heavy metal stability in municipal solid waste incineration fly ash with its compositional variety: A quick prediction case of leaching potential

In the current work, a quick prediction of the heavy metal (HM) leaching potential in municipal solid waste incineration fly ash (MSWI FA) was developed based on the statistical data between the HM leaching behaviors and the compositional variety in FA from China. In the comparison of the surveyed (508 data points) leaching concentrations, Pb and Cd leaching amounts in FA exceeded the Toxicity Characteristic Leaching Procedure (TCLP) limits most frequently. Moreover, the chemical compositions (pH and soluble chlorine (S-Cl)) of FA were proposed to have significant linear correlations with the Pb and Cd leaching. This corresponded to the chemical fraction change of the HM (risk assessment code (RAC)), which was relative to the pH of FA and chloride. This suggests that the HM stability can be evaluated by these factors. To verify this hypothesis, principal component analysis (PCA) and multiple linear regressions were used to evaluate the relationship between 5 indices and the leaching concentrations of Pb and Cd in 160 MSWI FA samples after stabilization/solidification from eastern China. It is indicated that pH, S-Cl and free CaO were the critical variables in Pb and Cd leaching. Accordingly, a new index, Φ, combined with the logistic model was proposed to predict the leaching potential. It is revealed that the high risk of the exceeding the limits for HM leaching occurred when Φ was below 12.5. Our results assess the HM stability in MSWI FA with its compositional variety in a statistical way, which gives an approach for the quick prediction of HM leaching potential.

Assessment of trace elements (Cd, Cu, Ni, Zn) fractionation and bioavailability in vineyard soils from the Hamedan, Iran

The use of fertilizers and fungicides causes the accumulation of trace elements in vineyard soils that may increase their bioavailability for plants. The aims of this study were to evaluate the cadmium (Cd), copper (Cu), nickel (Ni), and zinc (Zn) accumulation and distribution in three depths of 10 vineyard soils using total content, fractionation and DTPA extraction, and also to measure the content of trace elements in aerial parts of grapevines. The highest contents of Cd, Cu, Ni and Zn were observed at 0–20 cm layer and decreased with the depth. The mean total contents of the trace elements in the surface layer of row and between row soil samples were (mg kg−1) respectively, Cd 2.39, 2.43; Cu 46.63, 44.11; Ni 45.55, 44.30; Zn 100.92, 95.35. The highest percentage of the Cd was associated with carbonate (CARB) fraction, while the greatest percentage of the Cu, Ni and Zn were present in the residual (RES) fraction. Therefore, the Cd may be formed bioavailable and leachable forms in vineyard soils. The mobility factor (MF) values in row soil samples ranged from 39–51, 7–11, 6–10 and 4–10 for Cd, Cu, Ni and Zn, respectively indicating high leachability of Cd. The DTPA-extractable contents of trace elements in the surface layer were higher than those in the subsurface layers. The mean bioavailable contents of trace elements in the surface layer of row and between row soil samples were (mg kg−1) respectively, Cd 0.43, 0.43; Cu 2.19, 2.12; Ni 1.71, 1.71; Zn 2.45, 2.34. The content of trace elements in the leaves was higher than the berries. The mean contents of trace elements in leaves and berries were (mg kg−1) respectively, Cd 0.36, 0.00; Cu 5.91, 5.39; Ni 9.58, 6.27; Zn 27.04, 8.06. Trace element contents showed the following order: Zn > Ni > Cu > Cd in leaves and berries. The transfer factor (TF) values of trace elements in the leaves were higher than the berries and showed the following order: Zn > Ni > Cu > Cd in leaves and Ni > Cu > Zn > Cd in berries. There were significant and positive correlations between total and bioavailable contents of Cd, Cu, Ni and Zn in soils with correlation coefficients 0.97, 0.89, 0.66 and 0.85, respectively. The Cd and Cu contents in the aerial part of plants showed significant and positive correlations with total and bioavailable contents of these trace elements in soils, whereas the Ni and Zn contents in the aerial part of plants correlated significantly and positively only with bioavailable contents of these trace elements in soils.

Bioavailability and leaching of Cd and Pb from contaminated soil amended with different sizes of biochar.

Biochars have been successfully used to reduce bioavailability and leaching of heavy metals in contaminated soils. The efficiency of biochar to immobilize heavy metals can be increased by reducing the particle size, which can increase the surface area and the cation exchange capacity (CEC). In this study, the empty fruit bunch biochar (EFBB) of oil palm was separated into two particle sizes, namely, fine (F-EFBB < 50 µm) and coarse (C-EFBB > 2 mm), to treat the contaminated soil with Cd and Pb. Results revealed that the addition of C-EFBB and F-EFBB increased the pH, electrical conductivity and CEC of the contaminated soil. The amounts of synthetic rainwater extractable and leachable Cd and Pb significantly decreased with the EFBB application. The lowest extractable and leachable Cd and Pb were observed from 1% F-EFBB-treated soil. The amount of extractable and leachable Cd and Pb decreased with increasing incubation times and leaching cycles. The application of F-EFBB to Cd and Pb-contaminated soil can immobilize the heavy metals more than that of C-EFBB. Therefore, the EFBB can be recommended for the remediation of heavy metal-contaminated soils, and a finer particle size can be applied at a lower application rate than the coarser biochar to achieve these goals.

Electrodialytic treatment of Greenlandic municipal solid waste incineration fly ash

In Greenland, fly ash could contribute as a local resource in construction as a substitute for cement in concrete or clay in bricks, if the toxicity of the ash is reduced. In this study, fly ash from three different Greenlandic waste incinerators were collected and subjected to electrodialytic treatment for removal of heavy metals with the aim of enabling reuse of the fly ashes. Seven electrodialytic experiments treating up to 2.5 kg of fly ash in a 10 L suspension were made. The heavy metal removal was mostly dependent on the initial concentration in the fly ash. Heavy metal leaching was examined before and after treatment and revealed overall a significant reduction in leaching of Cd, Cr, Cu, Pb and Zn; however, Cr and Pb leaching were above Danish guideline levels for reuse purposes. Hg leaching was also reduced to below Danish guideline levels, although only investigated for one fly ash. Hexavalent Cr was not the dominant speciation of Cr in the fly ashes. Ettringite formed during electrodialytic treatment in the fly ash suspensions at pH above 12. The total concentration of eligible components for reuse such as CaO, SiO2 and Al2O3, increased during the electrodialytic treatment.

Characterization of naturally aged cement-solidified MSWI fly ash

Solidification/stabilization (S/S) is the most common treatment for municipal solid waste incineration fly ash (MSWI-FA), and is widely applied in developed countries but has a history barely longer than 10 years in China. However, our understanding of the physicochemical characteristics of the solidified FA body after long-term natural aging is comparatively poor. Focusing on cement-solidified FA that was naturally aged for 6 years (hereafter referred to as FA-6), the physicochemical characteristics including elemental composition, mineral composition, microstructure, thermogravimetry, distribution of heavy metals in mineral phases, and leaching characteristics of inorganic salts (Na, K, Ca), anions (Cl and SO4) and heavy metals (Cd, Cr, Cu, Pb, Zn) were investigated in this study. By combining pH-dependent leaching results with the geochemical model LeachXS, the chemical forms of heavy metals in the FA solid phase was determined. The main conclusion was as follows: (1) soluble salts of FA-6 decreased by more than 92% compared with fresh FA. (2) In FA-6, the proportions of Pb, Cd and Zn in the non-mineral phase were 100%, 100% and 58%, respectively, which may cause potential environmental risk of heavy metal release. The leaching concentration of Pb was 4007.37 μg/L according to compliance batch test of HJ300, which was far higher than the landfill requirement of 250 μg/L. (3) The controlling phase for Pb in FA-6 was Pb5(PO4)3Cl (pH 2–12) and Pb2(OH)3Cl (pH > 12). (4) Carbonates, hydrous Fe oxides (HFO) and dissolved organic carbon (DOC) in FA-6 also affected the phase-controlled leaching of heavy metals. The carbonate fraction partly controlled the leaching of Cd, Cu and Zn. For example, smithsonite (ZnCO3) controlled the release of Zn (pH 2–13). Adsorption to solid humic acid (SHA) controlled the Cr leaching at pH < 7 and the Cu leaching except pH > 12.

Heavy metal leaching and plant uptake in mudflat soils amended with sewage sludge.

The leaching and uptake of Cd, Cu, Pb, and Zn by maize (Zea mays L.) in mudflat saline-alkali soils amended by sewage sludge was examined using a greenhouse leaching column experiment. Application of sewage sludge caused decreased pH, increased DOC, and increased Cd, Cu, Pb, and Zn concentrations in leachates. The similar temporal dynamics of DOC and the metal concentrations in leachates suggested complexation of the metals with DOC. There was downward movement of metals as evidenced by the metal enrichment in the bottom layer (20-40-cm depth) of leaching columns (p < 0.05). The enrichment of metals was contributed by the acid-soluble/exchangeable fraction (EX), reducible fraction (RG), oxidizable fraction (OXI), and residual fraction (RES), indicating redistribution of leached metals from the top 20-cm layer. The sewage sludge application also enhanced plant uptake of metals. However, even under the greatest sludge application rate (150gkg-1), very small proportions, averagely 0.65% and 0.35%, of the applied metals were leached and taken up by maize, respectively, over the experimental period. Long-term field-scale research is warranted for further investigation of the effects of sewage sludge amendment on heavy metal fractionation and distribution in mudflat soil-plant-water system.

PH Effect on Heavy Metal Release from a Polluted Sediment

The performance of Cd, Ni, and Cu release from river sediment at different pH was investigated by a leaching test using deionised water and river water as leachants. Visual MINTEQ geochemical software was used to model the experimental results to predict heavy metal release from sediments. The distribution and speciation of heavy metals in the sediments after leaching test were analyzed by Tessier sequential extraction. Leaching test results showed that the release amounts of Cd, Ni, and Cu are in the range of 10.2–27.3 mg·kg−1, 80.5–140.1 mg·kg−1, and 6.1–30.8 mg·kg−1, respectively, with deionised water as leachant at different pH. As far as the river water was used as the leaching solution in the test, the results show similar metal leaching contents and tendencies to that of the deionised water as leaching solution. The results of Tessier sequential extraction indicate that Cd of residual fraction easily forms obvious precipitate under the acidic condition, especially in the range of pH 0–4 with the residual of Cd over 50% of the total Cd in the sediment. The exchangeable content of Ni decreases with the increase of pH under the range of 0–5. The Fe-Mn oxide fraction of Cu in the sediments changes significantly from pH 0 to pH 9. Based on the effect of pH on the leaching of Cd, Ni, and Cu from the polluted sediment in the tests, more accurate information could be obtained to assess the risk related to metal release from sediments once it is exposed to the changed acid/alkali water conditions.

Removal of metals and phosphorus recovery from urban anaerobically digested sludge by electro-Fenton treatment

To our knowledge, this work presents the first application of electro-Fenton (EF) process to sludge washing. Suspensions of anaerobically digested sludge (0.50 wt%) from a municipal wastewater treatment facility were electrolyzed with addition of Na2SO4 and Fe2+ at pH 3.0, using a stirred tank reactor with a boron-doped diamond (BDD) or RuO2-based anode and an air-diffusion cathode that produced H2O2. The effect of the sludge content in suspensions and applied current density (j) was examined. High quantities of Cr, Pb, Cd, Zn, Fe and P were leached at pH 3.0, whereas Cu showed the opposite trend. Aeration only enhanced Pb and Zn leaching, whereas the use of Fenton's reagent with 15 mM H2O2 solubilized 16.0% Cr, 23.0% P, 42.6% Fe and 56.0% Pb, with total leaching of Cd, Cu and Zn. EF with BDD anode at high j caused total precipitation of Cr, Pb and Fe, 40% Cd leaching and total solubilization of Cu and Zn. The RuO2-based anode enhanced the entrapment of Cr, Fe and P in the solid fraction of the sludge, but promoted a high transport of Cd, Cu and Zn to the liquid phase. P recovery was about 74%–79% in all EF treatments. The soluble organic carbon increased in most cases except for EF with BDD, where it decreased markedly, in agreement with the high oxidation power of this anode. The sludge dewaterability was largely improved in all treatments, attaining up to 97%, consistent with the scission of many extracellular polymeric components.

Potential Leaching of Heavy Metals from Pristine and Accelerated Weathered Slag from Recycling of Automobile Lead-Acid Batteries

Recycling of automotive lead-acid batteries generates large qualities of potentially toxic slag. The current study investigated heavy metal leaching and partitioning in spent lead-acid battery slag (LaBS) as a function of pH, liquid/solid (L/S) ratio, and pore volume. LaBS was highly alkaline (pH: 12.22) and contained high total concentrations (mg/kg) of Pb (101,300), Cu (2508), Cr (1238), Zn (589), Cd (515) and Ni (110), indicating poor metal recovery in the recycling processes. pH-dependent leaching results showed that maximum leaching of Pb, Cu, Cr, Zn, Cd and Ni occurred under acidic conditions (pH 2–6), but dropped under neutral and alkaline conditions (pH 7–13) due to precipitation as insoluble compounds. Heavy metal leaching at high L/S (5–10) was significantly higher (p < 0.05) than those at low L/S ratios (0.5–2.0), suggesting that the greatest risk of release of these heavy metals occurs in the long-term following disposal into the environment. Heavy metal breakthrough curves exhibited washout behaviour of highly soluble fractions, generally characterized by an initial rapid release of heavy metals within the first pore volumes, followed by a drop in concentration. Accelerated weathering of LaBS significantly reduced heavy metal leaching in both batch and column experiments except in very few cases. Heavy metal partitioning showed that total cumulative leaching in column experiments was very low, accounting for just 0.1–7.7%, while 92.3–99.9% occurred as the residual fraction. Despite high total concentrations of heavy metals in LaBS, the risk of heavy metal leaching under neutral-to-alkaline conditions or natural pH of the LaBS was very low, but could be high if the material is exposed to acidic conditions.

Cadmium mass balance in French soils under annual crops: Scenarios for the next century

Human populations are threatened by chronic exposure to the Cd accumulated in foods after being taken up from soils by crops. To decide whether and to what extent it is necessary to reduce the Cd content in cultivated soils, one needs to understand and predict its evolution. We therefore simulated the Cd mass balance in the soils under annual crops in France and in its 22 regions for the next century, following six scenarios of agricultural practices or regulatory conditions. If current cultivation practices are maintained, the average Cd content would increase by about 15% after a century, due to the input of Cd with P fertilizer applications. This represents around 85% of the soil Cd inputs and is nearly twice the Cd output caused by leaching and crop offtake. These results conflict with those recently obtained at the European level, due to three factors: the higher rate of P application in France than in Europe, a higher Cd content in the P fertilizers applied in France and a lower Cd leaching in French soils. Strict application of the good practices for P fertilization would stabilize the future soil Cd content at its present level. Assuming the current excessive P fertilization, the enforcement of a regulation limiting Cd content in the P fertilizers, as proposed by the European Union, would lead to a lesser increase in soil Cd, by 1.6% to 3.9% after a century. The combination of P fertilization good practices and Cd content limitation in P fertilizers would lead to a decrease in soil Cd content of between 3.0% to 5.2%. Organic agriculture would lead to an evolution of soil Cd content similar to that of conventional agriculture applying good practices. The accuracy of the mass balances could be ameliorated by a better assessment of Cd leaching.

Semi-passive in-situ pilot scale bioreactor successfully removed sulfate and metals from mine impacted water under subarctic climatic conditions

Mine drainage contaminated with metals is a major environmental threat since it is a source of water pollution with devastating effects on aquatic ecosystems. Conventional active treatment technologies are prohibitively expensive and so there is increasing demand to develop reliable, cost-effective and sustainable passive or semi-passive treatment. These are promising alternatives since they leverage the metabolism of microorganisms native to the disturbed site at in situ or close to in situ conditions. Since this is a biological approach, it is not clear if semi-passive treatment would be effective in remote locations with extremely cold weather such as at mines in the subarctic. In this study we tested the hypothesis that sulfate-reducing bacteria, which are microorganisms that promote metal precipitation, exist in subarctic mine environments and their activity can be stimulated by adding a readily available carbon source. An experiment was setup at a closed mine in the Yukon Territory, Canada, where leaching of Zn and Cd occurs. To test if semi-passive treatment could precipitate these metals and prevent further leaching from waste rock, molasses as a carbon source was added to anaerobic bioreactors mimicking the belowground in-situ conditions. Microbial community analysis confirmed that sulfate-reducing bacteria became enriched in the bioreactors upon addition of molasses. The population composition remained fairly stable over the 14 month operating period despite temperature shifts from 17 to 5 °C. Sulfate reduction functionality was confirmed by quantification of the gene for dissimilatory sulfite reductase. Metals were removed from underground mine drainage fed into the bioreactors with Zn removal efficiency varying between 20.9% in winter and 89.3% in summer, and Cd removal efficiency between 39% in winter and 90.5% in summer. This study demonstrated that stimulation of native SRB in MIW was possible and that in situ semi-passive treatment can be effective in removing metals despite the cold climate.

INFLUENCE OF AGROCHEMICAL REHABILITATION ON THE HEAVY METAL MIGRATION TO THE WATER

Soil plays the main role in the sustaining life of Earth ecosystems –it is thefundamental foundation of agriculture resources, food security, economy andenvironmental quality. The heavy metal pollution has been increasing inagricultural soils worldwide. For example, Cu is widely used as a pesticide againstfungal and bacterial diseases in crops or as a contaminant in organic amendments,or for irrigation as pig manure or sewage sludge. Soil and water pollution have thegreat impact on food safety and to human health: polluted soils have direct healthrisks, and secondary risk is connected to contamination of water supplies. Thearticlepresents the lysimetric experiment with the chemical composition results.This exploratory study aims to evaluate the influence of agrochemical rehabilitationon the heavy metal migration to the water. The chemical composition of intrasoil water has shown that contaminated black soil has a high absorption capacity ofheavy metals. The bulk of heavy metal brought about in a form of water-solublesalts wasabsorbedand converted by soil colloids of podzolized chernozemintorelatively stable compositions. Results of the analytical research showed thatorganic and organic-mineral systems, where phosphates were used in the averagevolume of 60 kg of Р2О5per hectare a year, reduced intake of cadmium in thesubsurface water. Mineral systems also impeded migration of zinc and copper tothe ground water. On the contrary, high doses of superphosphate in the fertilizersystem increased the leaching of Cd, Pb and Cu to the infiltration waters.