Environmental Geochemistry and Health最新文献

{"title":"Spatiotemporal evaluation of water quality, metal pollution, and human health risks in a dredged Urban River, New Jersey, USA.","authors":"Oluwafemi Soetan, Qingzhi Zhu, Huan Feng","doi":"10.1007/s10653-025-02579-6","DOIUrl":"https://doi.org/10.1007/s10653-025-02579-6","url":null,"abstract":"<p><p>Although the short-term effectiveness of remedial sediment dredging (RSD) on mitigating sediment contamination in the lower Passaic river (LPR), New Jersey, USA, was previously established in previous studies, dredging impacts on overlying water and consequential effects on aquatic life and human health were not investigated through model-based risk assessment methods. This study assessed the influence of RSD on metal pollution and toxicological risks upstream and downstream of River Mile-3.4, which was the subject of a 2012 RSD. Over the pre-, during-, and post-dredging periods, threats to aquatic life and humans were greater upstream at River Mile-4 (WQI_avg. ≥ 50, PI_avg. = 0.9) compared to downstream (River Miles-0 &1), where WQI_avg. < 50 and PI_avg. = 0.6 & 0.4, respectively. Monte Carlo probabilistic health risk assessment revealed significant probabilities of carcinogenic (≥ 98%) and non-carcinogenic health risks (2-50%) across all study areas and periods, with the highest risks recorded during and shortly after dredging, underscoring the associated toxicant exposure risks to humans from RSD. Significant (p < 0.05; 0.01) inter-correlations between metals were recorded pre-, during, and post-dredging, with observed negative correlation indicating concentration changes between the dredging and post-dredging periods. Principal component analysis of measured parameters explained two potential categories of pollution sources-(i) in-situ recontamination from dredging residuals and remobilized metals, and (ii) ongoing anthropogenic contributions from combined sewer outfalls and surface runoff. Recent pollution trends in the study areas underscore the effect of seasonality and anthropogenic influences on toxic metal pollution in the LPR and highlight the need for a robust and consolidated protective remedial action comprising engineered and natural measures, policy and engineering control of ongoing pollution sources, and institutional controls to limit human exposure.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"283"},"PeriodicalIF":3.2,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144483671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pesticide-driven antimicrobial resistance in water bodies: insights on environmental concerns, health implications and mitigation strategies.","authors":"Vishwajeet Sonkar, Harshit Devtalla, Shakti Kumar","doi":"10.1007/s10653-025-02600-y","DOIUrl":"10.1007/s10653-025-02600-y","url":null,"abstract":"<p><p>Pesticide contamination in water bodies is an emerging driver of antimicrobial resistance (AMR), posing severe environmental and public health risks. Due to excessive agricultural use, pesticides routinely end up in water bodies due to leaching, improper disposal, and agricultural runoff. Pesticides act as selective pressures, promoting resistant microbial strains by providing evolutionary pressure for the strains to thrive. Pesticides facilitate the dissemination of resistance genes through several mechanisms; horizontal gene transfer, bio-film formation, and co-selection with heavy metals. Pathogens carrying antibiotic resistance genes, are emerging as a threat to global populations exposed to contaminated water, as they are increasingly more challenging to treat with traditional antibiotics. Moreover, these issues escalate due to the overlap in disposal of agricultural runoffs and untreated hospital waste into water bodies leading to co-selection pressure facilitating multi drug resistance. Current review examines the critical role of pesticides contamination in driving AMR in Indian aquatic ecosystems, a novel intersection threatening global health and deteriorating aquatic life. However, existing policies are insufficient, necessitating stricter regulations to control the problem. There also needs to be stronger laws in place to limit and monitor pollution in the water bodies. The increasing incidences of health issues linked to resistant strains in Indian population, need to be tackled more comprehensively. Mitigation requires stringent agricultural regulations, improved waste management, and interdisciplinary strategies to curb this growing threat.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"282"},"PeriodicalIF":3.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144474329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Screening analysis and fine-scale spatial health risks assessment of phenols and PAHs in soils surrounding the coking industry.","authors":"Jinfeng Xue, Yixue Ma, Zhihui Feng, Congbo Ji, Qiao Wang","doi":"10.1007/s10653-025-02598-3","DOIUrl":"https://doi.org/10.1007/s10653-025-02598-3","url":null,"abstract":"<p><p>The atmospheric pollutants polycyclic aromatic hydrocarbon (PAHs) and phenols emitted by the coking industrial area (CIA) have seriously polluted the surrounding soil. Therefore, localized soil screening levels (SSLs) around CIA in Shanxi Province were derived and used for the assessment of soil health risk and groundwater pollution risk. Meanwhile fine-scale spatial probabilistic health risk assessment (PHRA) was conducted based on localized parameters. The results indicated that children under the age of 12 are at a significantly higher carcinogenic exposure risk. The concentration of phenol emitted by CIA into the surrounding soil via atmospheric deposition is higher than those of PAHs, posing a threat to groundwater quality. Groundwater conservation-based SSLs derived from wastewater discharge standards can be used to evaluate the potential pollution of phenols on groundwater. The highest risk for phenol and p-cresol was found to be located within the range of 0.9-1.3 km and 200°-260°, while for PAHs it was within 0.9 km and 90°-200°, neither in line with the prevailing wind direction or areas of high wind speed. BaP, the only substance with an acceptable carcinogenic risk, was primarily concentrated within 0.9 km and 145°-200°. Fine-scale spatial PHRA provides a more accurate understanding of the diverse risk distributions and offer reliable support for precise risk management strategies.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"281"},"PeriodicalIF":3.2,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144474330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green synthesis and adsorption performance of Eucalyptus globulus leaf modified iron oxide-graphene oxide nanocomposite for Cd(II) and Pb(II) removal from aqueous solution.","authors":"Divya Bhushan, Renuka Gupta","doi":"10.1007/s10653-025-02586-7","DOIUrl":"10.1007/s10653-025-02586-7","url":null,"abstract":"<p><p>This study investigates the potential of a biogenic iron oxide-graphene oxide nanocomposite modified with Eucalyptus globulus leaf extract, in comparison with its chemically synthesized counterpart, for efficient removal of Cd(II) and Pb(II) ions from aqueous solutions. The nanocomposites were synthesised using two routes via co-precipitation: conventional chemical method (MGO) and green synthesis method using Eucalyptus leaf extract (MGOE), showcasing a novel, sustainable approach. The leaf extract, rich in phytochemicals such as polyphenols and flavonoids, served as a natural reducing and stabilizing agent, enhancing surface functionality and adsorption efficiency. The structural, functional and surface properties were characterized by FESEM-EDX, TEM, XRD, FTIR, BET and pH_PZC. Both nanocomposites had rough, mesoporous surfaces with Fe₃O₄ nanoparticles as bright flakes. MGOE demonstrated an increased surface area (156.45 m²/g) compared to MGO (116.20 m²/g), confirming successful modification by biogenic extract. MGOE had a smaller mean pore diameter (12.574 nm) and reduced pore volume (0.2768 cm³/g) than MGO (16.353 nm and 0.3309 cm³/g, respectively). The point of zero charge (pH_PZC) was 4.6 for MGOE and 3.8 for MGO, exhibiting acidic surface properties. Batch adsorption experiments were conducted across varying pH (2-10), metal concentration (10-60 mg/L), adsorbent dose (0.1-2.5 g/L) and contact time (10-180 min). For Cd(II), the adsorption capacities achieved were 37.52 mg/g (MGO, 1.0 g/L, 120 min) and 42.10 mg/g (MGOE, 0.8 g/L, 90 min), while for Pb(II) removal, maximum adsorption capacities were 90.99 mg/g (MGO, 0.6 g/L, 90 min) and 105.15 mg/g (MGOE, 0.4 g/L, 30 min), at optimum pH 6 and 25 °C. The adsorption behaviour followed Langmuir isotherm model (0 < R_L < 1) and kinetics analysis indicated pseudo-second-order chemisorption with rate constant (k₂) between 0.01 and 0.05 g/mg.min. The process was spontaneous and endothermic. Both nanocomposites retained adsorption efficiency up to eight adsorption-desorption cycles. MGOE, enhanced via a green synthesis route, emerged as a cost-effective, efficient, and superior adsorbent than MGO, offering viable and sustainable options for heavy metal remediation in water treatment applications.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"279"},"PeriodicalIF":3.2,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144474327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micro and nano-plastics on environmental health: a review on future thrust in agro-ecotoxicology management.","authors":"Murugesan Chandrasekaran, Manivannan Paramasivan, Sajjad Ahmad","doi":"10.1007/s10653-025-02607-5","DOIUrl":"https://doi.org/10.1007/s10653-025-02607-5","url":null,"abstract":"<p><p>Microplastics and nanoplastics are addressed as emerging pollutants hindering plant and soil health, by and large. Accumulation, toxicity, and future impact necessitate dire attention in the present century owing to global health contexts. Plastic accumulation in plants not only affects plant growth and yield but can alter soil microbial community dynamics through its chemical interactions. Hence plant, soil and planet health need to be critically studied for creating awareness regarding environmental impacts. Further, the serious consequences that can affect agricultural production and productivity are summarized for impending repercussions and reverberations in agroecotoxicology. Potential limitations that can be explicitly considered in augmenting plant growth promotion and associated degradation strategies are foreseen to have large benefits for the farming community. Ecosystem dynamics about heavy metal toxicity, nano-pollution, and soil fertility management are discussed for holistic environmental management of Plastics upon plant and soil health. Future perspectives are concerned with interdisciplinary research prospects and stringent legal practices in the agricultural realm are accounted for possible mitigating strategies. Hence, the present review focusses in holistic management of MNPs agroecotoxicology for regulatory policies, bioremediation potentials, awareness and education. Environmental sustainability and pollution management will aid in potent waste management and circular economy prospects. A critical assessment incorporating global health perspectives affected by the holistic damage impeded by plastics is corroborated for holistic environmental impact analysis. The present review compiles the environmental microbiology perspectives on the effective management of plastics and associated deleterious outcomes. The review addresses the key questions enlisted: (1) How MNPs account for everlasting impacts in the environment?. (2) What are the consequences of MNPs upon plant probiotics and associated soil community microbial dynamics?. (3) What is the future of agro-ecotoxicology of MNPs?. (4) What are the implications of MNPs in augmenting plant growth through nutrient and biogeochemical cycling?. (5) How waste management of MNPs can enrich global policies, awareness and circular economy?.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"280"},"PeriodicalIF":3.2,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144474328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A population-based study to understand the association between Bisphenol-A (BPA) and Polycystic Ovarian Syndrome (PCOS): correlating with anthropometric parameters and clinical features.","authors":"Shrinjana Dhar, Ankita Das, Pritha Bhattacharjee","doi":"10.1007/s10653-025-02540-7","DOIUrl":"10.1007/s10653-025-02540-7","url":null,"abstract":"<p><p>Bisphenol-A (BPA) is one of the most ubiquitous EDCs, possessing a variety of health risks starting from metabolic disorders to cancer. Due to the estrogen-mimicking phenomenon, BPA was associated with female reproductive disorders like polycystic ovarian syndrome (PCOS). This study aims to investigate the possible epigenetic mechanisms behind BPA-mediated PCOS manifestation among young women from West Bengal, India. A cross-sectional study was conducted in Kolkata Metropolitan City, West Bengal, India. Upon voluntary participation, 40 women were selected for pathological screening, anthropometric measurements. Followed by this, BPA exposure was measured in serum as well as saliva using ELISA-based technique and subsequently Global DNA methylation status (%5-mC), HAT and HDAc activity were quantified. The mean concentration of BPA in serum (8.636 + 0.489 vs. 6.38 + 1.087) and saliva (8.865 + 0.939 vs. 6.686 + 1.524) were significantly (p 0.0001) high among PCOS group. In addition, serum BPA was positively correlated with total fat percentage (r = 0.318), visceral fat percentage (r = 0.365), testosterone level (r = 0.432) and HDAc activity (r = 0.414) while inversely correlated with resting metabolism (r = -0.004), prolactin level (r = -0.335) and 5-mC percentage (r = -0.431). Also, body weight, waist circumference, hip circumference, total fat (%), visceral fat (%), BMI, LH, testosterone, LH: FSH and HAT activity was significantly high (p 0.0001) whereas 5-mC (%) and prolactin level was significantly (p 0.05) low among PCOS women. Results suggest a potential role of BPA in the alteration of epigenetic mechanisms, which lead to alterations in gene expression levels and eventually cause obesity and hormonal imbalance. Therefore, we hypothesise that BPA may lead to PCOS among women.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"277"},"PeriodicalIF":3.2,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144340025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of citric acid on Cd speciation in biochar-amended contaminated soils.","authors":"Bingyao Xu, Jiayu Xu, Meiqi Wang, Weifeng Chen, Usman Farooq, Renhui Miao, Zhichong Qi","doi":"10.1007/s10653-025-02596-5","DOIUrl":"10.1007/s10653-025-02596-5","url":null,"abstract":"<p><p>Understanding the roles of low-molecular-weight organic acids (LMWOAs) in the transformation of chemical speciation of heavy metals in contaminated soil amended by biochar is of great significance for assessing the effectiveness of this carbonaceous amendment. The impacts of citric acid (a typical LMWOA) on the redistribution of Cd in contaminated soil amended by different amounts of biochar (1-5%) generated at various pyrolysis temperatures (300 ~ 700 °C) were investigated in this study. Biochar treatments reduced the exchangeable fraction (F1) of Cd after one year of incubation. Meanwhile, biochars produced at lower temperatures with more surface functional groups showed better immobilization performances (e.g., the F1 values decreased from 54.5% (CK) to 31.7% (adding 5% biochar generated at 300 °C) and 37.3% (adding 5% biochar generated at 700 °C), respectively). In comparison, the iron and manganese-bound fraction (F3) and organic bound fraction (F4) of Cd exhibited increased trends because of the increase in Cd linked to organic compounds and mineral oxides of soil particles. The residual fraction (F5) also showed an increased trend within a long remediation action. That is, the application of biochars favored the Cd redistribution into more stable speciations and led to a decrease in mobility. However, the addition of citric acid was beneficial in transforming immobilized fractions of Cd into mobilized fractions due to the H⁺-driven dissolution and release of Cd precipitation (e.g., for the soil treated with 3% biochar generated at 300 °C, the F1 values increased from 35.9% (before adding citric acid) to 43.5% (after adding citric acid)). Moreover, the high ratio of biochar addition could buffer soil pH reduction caused by adding citric acid and inhibit the dissolution of Cd. The findings have implications for assessing the effectiveness of biochar used as an amendment for reducing the risk of Cd in the rhizosphere of contaminated soils.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"278"},"PeriodicalIF":3.2,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144340026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-factor interaction perspective: machine learning-based analysis of Ni²⁺ adsorption onto soil.","authors":"Yingdong Wu, Jiang Yu, Zixin Zeng, Zhi Huang, HongBin Jiang, Pu Wang, Siwei Deng, Lei Han, Xinyue Huangpeng, Yinying Jiang, Weiwei Zhu","doi":"10.1007/s10653-025-02592-9","DOIUrl":"10.1007/s10653-025-02592-9","url":null,"abstract":"<p><p>With the rapid development of industry and agriculture, the ecological and health impacts of nickel (Ni²⁺) have gained increasing attention. While previous experimental studies have identified factors influencing Ni²⁺ adsorption behavior in soils, their nonlinear relationships and interactive effects remain underexplored. Through combining machine learning (CatBoost/XGBoost) models with SHapley Additive exPlanations (SHAP), this study analyzed 662 experimental datasets to reveal these nonlinear interactions between factors that affect the adsorption behavior of Ni²⁺ in soil. The modeling results demonstrated CatBoost's superior performance over XGBoost (test R² = 0.85 vs 0.83). Both feature importance analysis from the model and SHAP values identified the initial Ni²⁺ concentration (C₀) as the most critical factor, followed by ionic strength (IS), solid-to-liquid ratio (SL), clay content, and cation exchange capacity (CEC). SHAP dependence plots revealed a nonlinear SL effect that maximum adsorption occurred at low SL ratios with subsequent fluctuations attributable to ionic competition and pore accessibility constraints. Notably, SHAP interaction analysis uncovered a key finding which C₀ exhibited synergistic interactions with both CEC and clay content to enhance Ni²⁺ immobilization, whereas elevated IS substantially diminished these cooperative effects. This work quantitatively characterizes multifactorial coupling in Ni²⁺ adsorption processes, advancing theoretical foundations for risk assessment while informing targeted remediation strategies and enhancing mechanistic understanding of heavy metal interactions in soil systems.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"276"},"PeriodicalIF":3.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144332657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studies on the effect of microplastics on the adsorption and migration of Phenanthrene in river sediment.","authors":"Simin Feng, Runfang Yao, Yuyun Chen, Hongli Zhang","doi":"10.1007/s10653-025-02584-9","DOIUrl":"https://doi.org/10.1007/s10653-025-02584-9","url":null,"abstract":"<p><p>Microplastics (MPs) in ecosystems have garnered attention, yet their effects on the environmental behavior of organic pollutants in river sediments remain poorly understood. This study investigated how polyethylene (PE) and polyvinyl chloride (PVC) MPs influence the adsorption and migration of Phenanthrene (Phe) in sediments via batch and column experiments. Results revealed that sediment adsorption capacity for Phe followed: sediment containing 2% PE (120.27 μg g^-1) > sediment without MPs (111.93 μg g^-1) > sediment containing 2% PVC (104.79 μg g^-1), attributed to PE's looser, more elastic structure with larger free volume compared to glassy PVC. Humic acid (HA) inhibited Phe adsorption by occupying sites and solubilizing all sediments. pH effects showed a non-linear trend due to MPs' zero-charge points, with adsorption increasing and decreasing as pH rose. Migration was influenced by Phe's initial concentration, MP type/proportion, and HA levels: higher initial Phe increased maximum penetration rate from 0.36 to 0.44, enhancing mobility, while migration ability ranked: sediment without MPs > sediment containing PE > sediment containing PVC. These findings highlight that PE increased phenanthrene adsorption by 26% compared to PVC, enhancing pollutant retention in sediments and posing risks to downstream ecosystems. Our study provides critical insights into the role of polymer properties and environmental factors in regulating contaminant behavior, advancing the understanding of MPs as vectors for hydrophobic organic pollutants in aquatic environments, and bridging the knowledge gap between microplastic interactions and organic pollutant behavior in river sediments.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"275"},"PeriodicalIF":3.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144324824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Remediation of zinc and cadmium polluted soil using CaCO₃-biochar.","authors":"Shaon Kumar Das","doi":"10.1007/s10653-025-02582-x","DOIUrl":"https://doi.org/10.1007/s10653-025-02582-x","url":null,"abstract":"<p><p>Hazardous substances like zinc and cadmium can be released into the soil by ore mining and other industrial operations, which could endanger the environment. Biochar made from biomass pyrolysis is suggested as a sorption treatment for contaminated soils, enhancing microbial activity, soil fertility, and water retention. Utilizing four different biochar the average removal rate of heavy metal from aqueous solution was 48.2-65.7% (Cd), 46.2-59.1% (Pb), 46.7-59.3% (Ni), 45.2-59.4% (Zn), 48.7-62.4% (Cu), and 51.8-63.7% (As) compared to no biochar treatment. The percent decrease of Pb heavy metal adsorption with increase in maximum contaminant level (MCL) from one to five fold was 55.8 (RJB), 54.9 (SBB), 53.6 (PTB), and 51.3 (BMB). Effect of dose study showed that the As adsorption on all the four types of biochar was most favourable and Ni adsorption was the most awful. Results revealed that the wastewater COD_T, TSS, ammonia, TKN and TP values demonstrated an 89.2-91.8%, 85.3-82.7%, 89.4-87.9%, 59.2-70.5% and 89.3-78.8% decrease, respectively. Additionally, the wastewater As, Cd, Cr, Pb, Zn and Cu values resulted an 76.9-84.2%, 50.5-92.4%, 81.5-86.2%, 92.8-75.1%, 88.4-92.5% and 93.3-95.5% decrease, respectively after being passed via biochar bio-filter.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 7","pages":"274"},"PeriodicalIF":3.2,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144316211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}