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61,005 resultsShowing papers similar to Coupled Influence of Magnetic Biochar and Solution Chemistries on Retention and Release of Nanoplastics in Porous Media
ClearTransport characteristics of polystyrene microplastics in saturated porous media with biochar/Fe3O4-biochar under various chemical conditions
Biochar and iron oxide-modified biochar (Fe3O4-biochar) reduced the transport of polystyrene microplastics through sandy porous media by increasing surface attachment, with the effect modulated by humic acid concentration and ionic conditions. The findings suggest that biochar soil amendments could help immobilize MPs in contaminated agricultural soils and reduce their leaching to groundwater.
Polyvinyl chloride nanoplastics transport inhibited in natural sandy soil by iron-modified biochar
Researchers tested iron-modified biochar amendments in sandy soil columns and found that both magnetic corncob and walnut shell biochars significantly slowed the transport of polyvinyl chloride nanoplastics, reducing breakthrough from 85% toward near-complete retention, with the effect strengthened by higher ionic strength and divalent cations like calcium.
The individual transport, cotransport and immobilization with solar pyrolysis biochar of microplastics and plasticizer in sandy soil
Researchers tracked the individual transport, co-transport, and immobilization of microplastics in porous media, finding that plastic particle behavior differs significantly depending on surface charge and pore structure interactions. The results improve predictions of where microplastics migrate and accumulate in soils and aquifers.
Recent advances and factors affecting the adsorption of nano/microplastics by magnetic biochar
This review examines recent advances in using magnetic biochar to adsorb nano- and microplastics from aquatic environments. Researchers found that magnetic biochar offers advantages over traditional biochar by enabling easy separation from water using magnets, avoiding secondary pollution from filtration. The study identifies key factors affecting adsorption efficiency and highlights magnetic biochar as a promising tool for microplastic remediation in contaminated water.
Adsorptive behavior of micro(nano)plastics through biochar: Co-existence, consequences, and challenges in contaminated ecosystems
This review examines how biochar can adsorb micro- and nanoplastics with over 90% removal efficiency in aqueous systems, while also discussing their combined effects on soil properties, microbial communities, and plant growth.
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.
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.
Effect of biochar on microplastics penetration treatment within soil porous medium under the wetting-drying cycles and optimisation of soil-biochar mixing format
Researchers tested whether plant-based biochar mixed into soil could prevent microplastics from moving deeper into the ground during repeated wetting and drying cycles that mimic seasonal rainfall. They found that biochar significantly improved microplastic retention in the soil, and experimented with different soil-biochar mixing configurations to optimize performance. The study suggests that biochar amendments could be a practical strategy for reducing microplastic migration through agricultural soils.
Transport and retardation of microplastic in biochar
Researchers studied how biochar — a carbon material made from burned biomass — slows the movement of microplastics through soil and water systems. Biochar's ability to retard microplastic transport could help prevent plastic particles from spreading from contaminated agricultural land into waterways.
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.
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.
Removal of pristine and aged microplastics from water by magnetic biochar: Adsorption and magnetization
Researchers evaluated whether magnetic corncob biochar could effectively remove both pristine and aged polyamide microplastics from water. The study found that aging dramatically changed the surface properties of microplastics, and the biochar removed approximately 97% of aged microplastics compared to only 25% of pristine ones, with smaller particle sizes further improving removal. Evidence indicates that adsorption combined with magnetization offers a practical approach for removing environmentally weathered microplastics from water.
Cotransport and deposition of biochar with different sized-plastic particles in saturated porous media
Researchers studied how biochar and plastic particles (nanoplastics and microplastics) mutually affect each other's transport through water-saturated sand, finding that small plastic particles enhanced biochar mobility while biochar consistently suppressed plastic particle transport across all sizes, due to heteroaggregation altering surface charge and steric interactions.
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.
Enhanced retention of microplastics in biopolymer-modified porous media: Insights from pore-scale visualization
Researchers introduced a plant-derived biopolymer (BDH) to modify porous media and demonstrated through pore-scale visualization that it significantly enhances retention of polymethyl methacrylate microplastics under varying flow conditions. Nuclear magnetic resonance tracking revealed that the biopolymer alters pore-space connectivity and creates attachment sites that reduce microplastic mobility in soils and groundwater systems.
Microplastics/nanoplastics in porous media: Key factors controlling their transport and retention behaviors
This review examines what controls how microplastics and nanoplastics move through soil and other porous materials like sand and sediment. Factors like particle size, shape, surface charge, water flow speed, and the presence of other pollutants all influence whether plastics stay in place or travel deeper into groundwater. Understanding these transport behaviors is important for assessing the risk of microplastics contaminating underground drinking water sources.
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.
Efficient removal of microplastics from aqueous solution by a novel magnetic biochar: performance, mechanism, and reusability
Researchers developed a magnetic biochar from rice husks that achieved 99.96% removal of microplastics from water, with the material showing excellent reusability and performance under various environmental conditions.
Interactions Between Biochar and Nano(Micro)Plastics in the Remediation of Aqueous Media
This review examines how biochar, a charcoal-like material made from organic waste, can be used to remove micro and nanoplastics from contaminated water. Biochar is an affordable and sustainable option that absorbs plastic particles, though the technology is still in early stages. Better water purification methods like this could help reduce the amount of microplastics that end up in drinking water and the human body.
Biochar applications in microplastic and nanoplastic removal: mechanisms and integrated approaches
This review explores how biochar, a charcoal-like material made from organic waste, can be used to filter microplastics and nanoplastics out of water. Researchers found that biochar works through several mechanisms and becomes even more effective when combined with other water treatment technologies. The study suggests biochar-based approaches could be a practical, low-cost strategy for tackling plastic pollution in water systems.
Biochar mitigates microplastic‐induced destabilization of soil organic carbon via molecular recalcitrance and microbial process regulation
Biochar amendments to soil were shown to offset the destabilizing effects that microplastics have on soil aggregate structure. The finding suggests that biochar could be a practical soil amendment to counteract microplastic-driven soil degradation in contaminated agricultural lands.
Removal of nanoplastics from aqueous solution by aggregation using reusable magnetic biochar modified with cetyltrimethylammonium bromide
CTAB-modified magnetic biochar was synthesized and found to efficiently remove polystyrene nanoplastics from water through electrostatic attraction, with the magnetic component enabling easy separation and reuse across multiple cycles. The composite offers a practical and low-cost approach for nanoplastic remediation from contaminated water.
Removal of micro- and nano-plastics from aqueous matrices using modified biochar – A review of synthesis, applications, interaction, and regeneration
This review examines how modified biochar materials can be used to remove micro- and nanoplastics from water. Researchers found that chemical functionalization and nanoparticle integration of biochar significantly improve its ability to capture plastic particles through mechanisms like electrostatic interaction and physical adsorption. The study also highlights challenges in regenerating used biochar for sustainable reuse in water treatment applications.
Adsorption and mechanism of magnetically modified industrial hemp straw biochar on microplastics in aqueous solution
A magnetically modified industrial hemp straw biochar adsorbent was developed and tested for removing polystyrene microplastics from groundwater. The KOH-activated, iron-modified biochar achieved efficient MP adsorption through electrostatic attraction and hydrophobic interactions, offering a sustainable low-cost remediation material.