Comprehensive assessment of harmful heavy metals in contaminated soil in order to score pollution level

Zhao, Haodong; Wu, Yan; Lan, Xiping; Yang, Yuhong; Wu, Xiaonan; Du, Lei

doi:10.1038/s41598-022-07602-9

Cited by 116 publications

(37 citation statements)

References 34 publications

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“…Heavy metal pollution poses a serious threat to human health because of the high toxicity, environmental mobility, accumulation in the food chain, and lack of biodegradability of heavy metals (Fei et al, 2022; Szymańska‐Pulikowska et al, 2023; Wdowczyk & Szymańska‐Pulikowska, 2022). In addition, heavy metals persist long term in soil environment and can adversely affect soil fauna and flora through soil–microbial interactions and microbial processes (Kumar et al, 2019; Zhao et al, 2022). Heavy metals are a persistent stress that threatens the local ecosystem; studies have shown their impact on changes in microbial metabolic activity, population diversity, and soil microbiome abundance (Qian et al, 2023; Yang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Copper and cadmium content in Polish soil: Analysis of 25‐year monitoring study

et al. 2023

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Metals can accumulate in agricultural soils, presenting a serious threat to human health; therefore, it is important to analyze the quality of these soils to avoid possible harm related to their contamination in the future. Despite the importance of monitoring arable soil quality, few studies have examined the current state of Cu and Cd soil contamination through analysis of historical data and temporal trends in heavy metal content. Therefore, this study was aimed at analyzing the spatial variability of Cu and Cd content (expressed by toxicity indices) and assessing the level of contamination of arable soils in Poland over the last 25 years (1995–2020). The average Cu content in soil throughout the duration of the study was ~10 mg/kg. The average Cd content increased from 0.7 mg/kg (in 1995) to 3.4 mg/kg (in 2020). The evaluation of Cu and Cd soil contamination showed that soils contaminated with Cd and Cu constituted 1.4% and 2.3% of the total monitoring points, respectively. The geoaccumulation index and pollution index ranged for Cu from −5.23 to 3.09 (mean: −2.50) and from 0.02 to 6.40 (mean: 0.20), and for Cd from −5.23 to 6.92 (mean: −1.67) and from 0.01 to 60.58 (mean: 0.44). The soil was practically uncontaminated with Cu and Cd in 98.77%/98.92% and 93.44%/97.92% of cases, respectively. On a national scale, the contents of Cu and Cd in soils depend on soil properties (pH, C, OM, ST, and CM) to a very small extent. An assessment of the spatial distribution of Cu and Cd concentrations in Polish arable soils indicated regional differences related to the degree of industrialization/urbanization. The obtained results show the impact of human activity on the level of heavy metals present in soils.

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Section: Introductionmentioning

confidence: 99%

Copper and cadmium content in Polish soil: Analysis of 25‐year monitoring study

et al. 2023

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“…Mining, textiles, paper, fertilizer, painting, and petroleum refining industries are considered the main drivers of industrial growth that contribute to the economy and enhance human well-being. Nonetheless, adverse industrial practices have heightened concerns related to water pollution since they are one of the primary contributors to heavy metal ion pollution in water bodies [1][2][3]. In order to avoid the contamination of public streams and water resources, heavy metals are only allowed to be disposed of in extremely low amounts in wastewater effluent.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of Heavy Metal Ions by Hybrid Inulin-TEOS for Water Treatment

et al. 2022

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The present work reports the adsorption behavior involved in the adsorption of heavy metal ions using a hybrid inulin-tetraethoxysilane (TEOS) adsorbent produced through the sol-gel process. An aqueous multi-element solution was used in order to examine the inulin-TEOS adsorbent efficiency in removing Cd2+, Co2+, and Ni2+ ions. The effects of the contact duration, adsorbent dosage, initial concentration, and solution pH on the adsorption of the targeted metal ions in batch systems were evaluated. The optimal conditions for the removal of all targeted heavy metals were as follows: 30 mg of an adsorbent dosage at pH 4 and 5 minutes of contact time with an initial concentration of 0.5 mg/L. A one-way analysis of variance (one-way ANOVA) with a replication test showed that all parameters had significant differences at a p-value of 0.05. At the optimum condition, 92.59%, 90.27%, and 86.472% of Cd2+, Ni2+, and Co2+ were removed, respectively. Findings from kinetic studies suggest that the pseudo-second order model can successfully describe the overall adsorption process. Additionally, the adsorption process can be adequately explained using an intra-particle diffusion model with diffusion rate constants following the sequence of Kint,1 > Kint,2 for Co2+ and Ni2+ and Kint,1 > Kint,2 > Kint,3 for Cd2+ in each step. The results suggest that Ni2+ fits with the Langmuir isotherm, while Cd2+ and Co2+ better fit the Freundlich one. Finally, the adsorbent can be reused and is able to retain a good percentage of removal, with percentage difference decreases of 1.99%, 3.29%, and 4.12% for Cd2+, Ni2+, and Co2+, respectively, after the fifth cycle. The hybrid inulin-TEOS bio-sorbent has good adsorption capacity and durability, which could offer a low-cost practical cleaner production process for removing targeted analytes from wastewater. Doi: 10.28991/CEJ-2022-08-09-03 Full Text: PDF

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“…Sci. 2022, 12, 6312 2 of 12 Many studies have been conducted on the reduction in or removal of HMs from polluted soil, including in situ and ex situ remediation techniques [7]. Physical and chemical remediation techniques do not completely solve the environmental problems associated with HM contamination, whereas biological techniques (e.g., use of plants) have been proven to be the most environmentally and economically effective approaches [6].…”

Section: Introductionmentioning

confidence: 99%

Ecological Characterization and Bio-Mitigation Potential of Heavy Metal Contamination in Metallurgically Affected Soil

et al. 2022

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Heavy metals (HMs) remain persistent in soil for a long time and thus present a long-term threat of environmental pollution. In this study, the concentrations of some HMs (As, Cu, Zn, Pb, and Mo) in soil, potentially affected by the ex-operation of a metallurgical plant—specifically, a copper smelter in Alaverdi Town, northeastern Armenia—were measured, based on which, the HM contamination and its ecological, biological, and health effects were assessed. Concentrations of HMs (Cu, Zn, and Pb) were also measured in different plant (leaves) and invertebrate species that occur in the soil over the metallurgical factory site in order to assess the potential for the bioremoval of HMs from the soil. The results showed that the ex-operation of the metallurgical facility created such contamination in the soil that it caused a noticeable loss of invertebrate biomass in the soil and posed ecological, non-carcinogenic (for children), and carcinogenic health hazards. The investigated plant and invertebrate species were characterized by different capacities for the accumulation of HMs from the soil, based on which the plant species Fraxinus excelsior, Acer platanoides, Robinia pseudoacacia, and Aesculus hippocastanum and the invertebrate species Deroceras caucasicum, Limax flavus, and Eisenia rosea are recommended to be used for the selective removal of HMs (Cu, Zn, and Pb) from the soil.

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Comprehensive assessment of harmful heavy metals in contaminated soil in order to score pollution level

Cited by 116 publications

References 34 publications

Copper and cadmium content in Polish soil: Analysis of 25‐year monitoring study

Copper and cadmium content in Polish soil: Analysis of 25‐year monitoring study

Adsorption Behavior of Heavy Metal Ions by Hybrid Inulin-TEOS for Water Treatment

Ecological Characterization and Bio-Mitigation Potential of Heavy Metal Contamination in Metallurgically Affected Soil

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