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61,005 resultsShowing papers similar to Mechanistic Evidence for Hg Removal from Wastewater by Biologically Produced Sulfur
ClearSulfide modifies physicochemical properties and mercury adsorption of microplastics
Researchers found that sulfide exposure modifies the surface chemistry and physicochemical properties of microplastics, significantly altering their capacity to adsorb mercury in sulfur-rich anaerobic environments like sewage and wastewater treatment plants.
Biomineralization of Cd2+ and Pb2+ by sulfate-reducing bacteria Desulfovibrio desulfuricans and Desulfobulbus propionicus
Researchers used sulfate-reducing bacteria to immobilize cadmium and lead ions through biomineralization, finding that microplastics present in the system affected bacterial activity and metal precipitation efficiency, with implications for using biological approaches to treat heavy metal contamination in MP-polluted environments.
The fate of photoreduction of Hg(II) in aqueous solution by aged microplastic particles and their leached DOM
Aged microplastic particles significantly inhibited the photoreduction of mercury from Hg(II) to Hg(0) in water by adsorbing available mercury, while dissolved organic matter leached from aged microplastics had the opposite effect, promoting photoreduction by up to 53% compared to controls.
Bioremediation Performance of Marine Sponge Symbiont Bacteria against Nickel and Mercury Heavy Metal Pollutants
Researchers tested bacteria from marine sponges for their ability to remove heavy metal pollutants — specifically nickel and mercury — from water. The sponge-associated bacteria showed promising bioremediation activity, with removal efficiency varying by species and conditions. Marine symbiont bacteria could be developed as natural tools for cleaning up metal-contaminated water.
Nanotechnology for the bioremediation of heavy metals and metalloids
This review examines the application of nanotechnology for bioremediation of heavy metals and metalloids from contaminated soil and water, highlighting how nanobioremediation approaches overcome limitations of conventional cleanup methods.
Adsorption and desorption of Hg(II) by four aged microplastics and its effects on gaseous elemental mercury production in seawater
Researchers studied how four types of aged microplastics adsorb and release mercury in seawater and how they affect the production of gaseous elemental mercury. They found that photoaging significantly increased the microplastics' capacity to bind mercury due to surface changes like increased roughness and oxygen-containing groups. The study suggests that weathered microplastics in the ocean may alter mercury cycling, potentially affecting how this toxic metal moves through marine environments.
Unveiling the Role of Dissolved Organic Matter on the Hg Phytoavailability in Biochar-Amended Soils
Researchers found that biochar reduces mercury availability to plants in soil primarily by promoting the formation of humus-like dissolved organic matter rather than by directly adsorbing mercury, with higher-temperature biochar providing greater protection.
Concentrations and Species of Mercury in Municipal Sludge of Selected Chinese Cities and Potential Mercury Emissions From Sludge Treatment and Disposal
Researchers surveyed mercury concentrations and chemical species in sewage sludge from 16 provinces and municipalities across China, finding total mercury ranging from 0.3 to 7.7 mg/kg in all samples. Sequential chemical extraction revealed the dominant mercury fractions and the study estimated potential mercury emissions from various sludge treatment and disposal pathways.
Mechanistic and recent updates in nano-bioremediation for developing green technology to alleviate agricultural contaminants
Researchers reviewed nano-bioremediation — the combination of nanoparticles with microbial processes — as a promising strategy for removing heavy metals, pesticides, and other agricultural contaminants from soil and water, highlighting improved catalytic activity and adsorption capacity compared to conventional remediation methods.
A bifunctional robust metal sulfide with highly selective capture of Pb2+ ions and luminescence sensing ability for heavy metals in aqueous media
Researchers developed a 3D metal sulfide ion exchanger capable of selectively removing lead ions from water with high efficiency. While focused on heavy metal removal, similar ion exchange materials could potentially be combined with microplastic removal in water treatment systems, since plastics often carry sorbed heavy metals.
Sustainable Approaches for Wastewater Treatment: An Analysis of Sludge-Based Materials for Heavy Metal Removal from Wastewater by Adsorption
This review synthesized findings on sludge-based materials as adsorbents for heavy metal removal from wastewater, providing a comprehensive foundation for understanding how different sludge types, activation treatments, and operating conditions affect metal removal performance.
Detection of metallic pollutants in waste water using bio sensors and its remediation
This review examines biosensor technologies for detecting metallic pollutants in wastewater, including approaches for monitoring diverse contaminants from industrial and urban sources. The study highlights how continuous real-time monitoring using biosensors can help address the growing threat of water pollution to human health and ecosystems.
Interaction of Naturally Occurring Phytoplankton with the Biogeochemical Cycling of Mercury in Aquatic Environments and Its Effects on Global Hg Pollution and Public Health
This review examines how naturally occurring phytoplankton interact with mercury in aquatic environments, serving as the primary entry point for toxic mercury forms into the marine food web. Researchers found that phytoplankton can absorb, transform, and biomagnify mercury, with implications that ripple up to fish and ultimately to human seafood consumers. The study highlights the connection between mercury contamination, microorganism biology, and public health risks from consuming contaminated seafood.
Ecofriendly sustainable synthetized nano-composite for removal of heavy metals from aquatic environment
An eco-friendly nano-composite was synthesized and tested for removing heavy metals from aquatic environments, achieving high removal efficiencies for multiple metals through adsorption. The material was developed using sustainable synthesis methods and biomass-derived components, offering a greener alternative to conventional adsorbents for water treatment.
Mechanism of Microbial Detoxification of Heavy Metals: A Review
This review examined the mechanisms by which microorganisms detoxify heavy metals in contaminated environments, covering processes including metal precipitation, redox transformation, biosorption, and efflux pumping. The authors identified bacteria and fungi with strong metal detoxification capabilities as candidates for bioremediation of heavy metal-contaminated soils and waters.
Nanomaterials for Water Remediation: An Efficient Strategy for Prevention of Metal(loid) Hazard
This review examines how nanomaterials can be used to remediate metal and metalloid contamination in water, covering adsorption mechanisms, synthesis methods, and the advantages of nano-scale adsorbents over conventional water treatment approaches.
Role of algae-bacterial consortium in heavy metal contaminated water treatment
This review examines the use of algae-bacterial consortia for bioremediation of arsenic and cadmium contamination in aquatic environments, synthesizing evidence that these biological partnerships can effectively remove heavy metals from polluted water systems.
Adsorption/desorption of mercury (II) by artificially weathered microplastics: Kinetics, isotherms, and influencing factors
Researchers studied how different types of weathered microplastics absorb and release mercury, finding that microplastics from wastewater treatment plants and rubber particles had the highest affinity for this toxic metal. While less than 3% of absorbed mercury was released in freshwater, up to 73% was released under conditions mimicking bird digestion, indicating that eating contaminated microplastics significantly increases mercury exposure. These findings are relevant to human health because they suggest that microplastics in seafood could deliver concentrated doses of toxic mercury during digestion.
Study on the Adsorption Behavior and Mechanism of Heavy Metals in Aquatic Environment before and after the Aging of Typical Microplastics
Researchers investigated the adsorption behavior and mechanisms of heavy metals by typical microplastics before and after environmental aging, finding that aging significantly alters microplastics' surface properties and capacity to bind metals such as cadmium and lead in aquatic systems.
Decorated reduced graphene oxide transfer sulfides into sulfur and sulfone in wastewater
This study developed a reduced graphene oxide/iron oxide composite material for removing sulfides from wastewater through adsorption. The material shows potential for treating industrial wastewater containing chemically reactive sulfur compounds.
A Study on the Precipitation-Based Removal of Heavy Metals and Sludge Reduction from Electroplating Wastewater Using FeS4
Researchers investigated a precipitation-based method using FeS4 for removing heavy metals from electroplating wastewater while simultaneously reducing sludge generation. The study evaluated the efficiency of this chemical precipitation approach as a treatment strategy for the toxic metal-laden effluents characteristic of electroplating operations.
Soil Mercury Pollution in Nature-Based Solutions Across Various Land Uses: A Review of Trends, Treatment Outcomes, and Future Directions
This systematic review found that constructed wetlands with specific plant species (Acorus calamus, Aquarius palifolius) achieved over 90% mercury removal from contaminated soils, though anaerobic conditions can promote toxic methylmercury formation. Biochar showed promise for immobilizing mercury but also increased methylmercury under certain conditions, highlighting the need for site-specific design.
Dark Reduction of Hg(II) by Dissolved Organic Matter Derived from Aging Microplastics: Mechanisms and Implications
Researchers discovered that dissolved organic matter released from photoaged microplastics can convert toxic mercury into a less reactive form through dark chemical reactions. The organic matter from aged polystyrene, PVC, and polylactic acid reduced over 30% of mercury within 10 minutes, outperforming natural river organic matter. The findings suggest that as microplastic pollution increases in waterways, it may significantly alter mercury cycling in aquatic environments.
Insights into catalytic removal and separation of attached metals from natural-aged microplastics by magnetic biochar activating oxidation process
A magnetic biochar material activated persulfate to degrade the organic layer on aged microplastics, releasing bound metals like lead and then re-adsorbing them from solution for magnetic separation. The approach demonstrates a combined oxidation and adsorption strategy for removing hazardous metals associated with microplastics in contaminated water.