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61,005 resultsShowing papers similar to Optimizing Biochar for Heavy Metal Remediation: A Meta-Analysis of Modification Methods and Pyrolysis Conditions
ClearCompetitive adsorption behaviors and mechanisms of Cd, Ni, and Cu by biochar when coexisting with microplastics under single, binary, and ternary systems
Researchers studied how biochar absorbs heavy metals like cadmium, nickel, and copper when microplastics are also present in the soil. They found that microplastics competed with biochar for metal binding, reducing its effectiveness as a soil amendment. The study suggests that microplastic contamination in agricultural soils may undermine common remediation strategies that rely on biochar to immobilize toxic metals.
How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar
This comprehensive review synthesizes 20 years of research on biochar, a charcoal-like material made from organic waste that can improve soil health and reduce pollution. Biochar can reduce plant uptake of heavy metals by 17-39% and increase nutrient availability, making it potentially useful for cleaning up microplastic-contaminated soils. While not directly about microplastics, the findings are relevant because biochar could help mitigate the effects of soil pollutants that microplastics carry and concentrate.
Adsorption, immobilization mechanisms and potential risks of Cd in soil-biochar-microplastics system
This study examined how varying concentrations (0-10%) of polyethylene microplastics affect biochar's capacity to adsorb and immobilize cadmium (Cd) in soil. Microplastics increased biochar's Cd adsorption by up to 33% but simultaneously elevated Cd leaching risk, highlighting a complex trade-off in using biochar for heavy metal remediation in microplastic-contaminated soils.
Effects of microplastics in soil on the regulation of cadmium bioavailability by biochar
Researchers investigated how biochar amendments affect cadmium bioavailability in soils co-contaminated with microplastics, finding that the presence of microplastics altered cadmium mobility and complicated biochar's remediation effectiveness in ways that depend on the specific MP type present.
Remediation of ternary heavy metal-polyethylene microplastics co-contaminated soil using co-modified biochar with deep eutectic solvent and warm patch: competitive interactions, mechanistic insights, and microbial community response
Researchers developed a deep eutectic solvent and warm patch co-modified biochar that reduced DTPA-extractable Pb, Cr, and Cd in contaminated soil by up to 50.8%, 46.7%, and 24.2% respectively, while polyethylene microplastics significantly limited biochar remediation effectiveness by altering its physicochemical properties.
Biochar alters chemical and microbial properties of microplastic-contaminated soil
Researchers found that biochar amendments improved chemical and microbial properties of microplastic-contaminated soil, with effects varying by biochar type and water conditions, suggesting biochar as a potential remediation tool for plastic-polluted agricultural soils.
Biochar as a Green Sorbent for Remediation of Polluted Soils and Associated Toxicity Risks: A Critical Review
This review examines biochar, a charcoal-like material made from organic waste, as a tool for cleaning up soil contaminated with heavy metals and organic pollutants. While biochar can effectively trap contaminants, the production process itself can create toxic byproducts like PAHs that may harm soil life. The research is relevant to microplastic pollution because biochar is being explored as a potential method to bind and reduce microplastic contamination in agricultural soils.
Impact mechanisms of polyethylene microplastic on Cd adsorption and passivation by KMnO4-modified biochar in different soils
Researchers investigated how polyethylene microplastics affect cadmium (Cd) adsorption and passivation by KMnO4-modified biochar across 50 soil combinations varying in soil type, Cd concentration, and microplastic content. Microplastics increased biochar's Cd adsorption capacity by 1.5-33.1% depending on concentration but also increased Cd leaching risk at higher microplastic loads.
Advancing modified biochar for sustainable agriculture: a comprehensive review on characterization, analysis, and soil performance
This review covers how biochar, a carbon-rich material made from organic waste, can be modified to improve soil health and crop growth. While not directly about microplastics, modified biochar has been studied as a potential tool for absorbing and immobilizing microplastics in contaminated soil. Understanding how to optimize biochar properties could help develop strategies for reducing microplastic uptake by food crops.
Combined effect of biochar and soil moisture on soil chemical properties and microbial community composition in microplastic‐contaminated agricultural soil
Biochar was applied to microplastic-contaminated agricultural soil under different moisture conditions, with results showing that biochar improved soil chemical properties and shifted microbial communities in ways that partially offset microplastic-induced degradation. The study suggests biochar as a practical soil amendment to mitigate microplastic impacts in farming systems.
Succession of biochar addition for soil amendment and contaminants remediation during co-composting: A state of art review
Researchers reviewed how adding biochar during composting improves soil health and reduces contaminants, finding that co-composting with biochar can remediate heavy metals by 66–95% and also adsorb emerging organic pollutants like microplastics and pesticides, though some changes to soil microbial communities may inadvertently favor pathogens.
The Removal and Mitigation Effects of Biochar on Microplastics in Water and Soils: Application and Mechanism Analysis
This review examines how biochar can be used to both remove microplastics from water and mitigate their harmful effects in soils. Researchers found that woody biochar was the most effective type for adsorbing microplastics, while also helping to restore soil enzyme activities and microbial communities disrupted by plastic contamination. The study calls for further research into optimizing biochar applications and understanding the long-term environmental implications of biochar-microplastic interactions.
Biochar Offsets Microplastic-Induced Cadmium Mobilization and Plant Accumulation in Contaminated Soils
This greenhouse study found that microplastics in soil can increase how much cadmium (a toxic heavy metal) is absorbed by crops. Adding biochar to the soil helped counteract this effect, reducing cadmium uptake by plants — a promising finding for protecting food safety in contaminated farmland.
Removal of Co-Occurring Microplastics and Metals in an Aqueous System by Pristine and Magnetised Larch Biochar
Researchers tested pristine and modified biochar for simultaneous removal of co-occurring microplastics and heavy metals from water, finding that biochar surface modifications improved adsorption of both contaminant classes, offering a promising dual-removal treatment strategy.
Recent advances in biochar-mediated mitigation of microplastics: A comprehensive review on removal mechanisms, toxicity alleviation strategies, and synergistic environmental impacts
Researchers comprehensively reviewed recent advances in using biochar to mitigate microplastic pollution, including removal mechanisms, toxicity alleviation strategies, and synergistic environmental impacts. The study found that biochar is a promising candidate for microplastic removal and toxicity reduction due to its high specific surface area and adsorptive properties.
Sludge-derived biochar: A review on the influence of synthesis conditions on environmental risk reduction and removal mechanism of wastewater pollutants
This paper is not about microplastics; it reviews methods for preparing biochar from sewage sludge and its use in removing heavy metals and organic pollutants from wastewater.
Advances in the Study of Heavy Metal Adsorption from Water and Soil by Modified Biochar
This review analyzes different methods for modifying biochar to improve its capacity to adsorb heavy metals from contaminated water and soil. Researchers examined how various modification techniques enhance biochar's adsorption performance for removing toxic metals from environmental substrates. The study provides a reference for practical applications of modified biochar in heavy metal remediation projects.
Applications of biochar in the remediation of soil microplastic pollution: A review
Researchers reviewed the use of biochar as a tool for remediating microplastic-contaminated soil. The study found that biochar application shows promise for addressing soil microplastic pollution by altering soil properties in ways that can reduce microplastic mobility and mitigate their negative effects on soil structure, plant growth, and biogeochemical cycling.
Effects of microplastics and biochar on soil cadmium availability and wheat plant performance
Researchers found that fresh microplastics increased soil cadmium availability and plant uptake in wheat, and when combined with biochar, microplastics further amplified cadmium mobilization by decreasing soil pH and increasing dissolved organic matter, complicating biochar-based soil remediation strategies.
Advances and prospects of biochar in improving soil fertility, biochemical quality, and environmental applications
This review examines how biochar, a charcoal-like material made from organic waste, can improve soil health and clean up pollutants including microplastics. Biochar's ability to absorb and trap contaminants makes it a promising tool for reducing microplastic pollution in agricultural soil. The findings suggest biochar could help limit the amount of microplastics that enter the food chain through crops grown in contaminated soil.
Addressing the Microplastic Dilemma in Soil and Sediment with Focus on Biochar-Based Remediation Techniques: Review
This review examines how biochar, a carbon-rich material made from organic waste, can be used to remediate microplastic-contaminated soils and sediments. Researchers found that biochar can adsorb microplastics and reduce their mobility, while also improving overall soil health and microbial activity. The study highlights biochar-based approaches as a cost-effective and environmentally friendly strategy for addressing microplastic pollution in terrestrial environments.
Investigating the Adsorption Effect of Biochar on Microplastic Pollutants in Soil
This study reviews how biochar can adsorb and remove microplastics from contaminated soil through physical and chemical mechanisms. Researchers found that biochar's high surface area and functional groups are key factors in its microplastic adsorption capacity, and that acidic soil conditions improve removal efficiency. The findings suggest biochar application could be a practical approach for addressing microplastic pollution in agricultural soils.
Role of Biochar and Microbes in Remediation of Microplastics in Soil
This review examines how biochar and soil microbes can be combined to remediate microplastic-contaminated soils, synthesizing evidence for biochar's adsorption capacity and microbial degradation pathways that reduce microplastic persistence and toxicity.
Selenium-Modified Biochar Synergistically Achieves the Safe Use of Selenium and the Inhibition of Heavy Metal Cadmium
Despite its title referencing soil pollution, this paper studies selenium-modified rice husk biochar as a method for removing cadmium (a heavy metal) from contaminated soil — not microplastic pollution. It examines biochar chemistry and adsorption processes for heavy metal remediation and is not relevant to microplastics or human health.