Heavy metal pollution in the aquatic environment: efficient and low-cost removal approaches to eliminate their toxicity: a review

RSC Advances, Journal Year: 2023, Volume and Issue: 13(26), P. 17595 - 17610

Published: Jan. 1, 2023

Heavy metal contamination of water sources has emerged as a major global environmental concern, threatening both aquatic ecosystems and human health. pollution in the environment is on rise due to industrialization, climate change, urbanization. Sources include mining waste, landfill leachates, municipal industrial wastewater, urban runoff, natural phenomena such volcanic eruptions, weathering, rock abrasion. ions are toxic, potentially carcinogenic, can bioaccumulate biological systems. metals cause harm various organs, including neurological system, liver, lungs, kidneys, stomach, skin, reproductive systems, even at low exposure levels. Efforts find efficient methods remove heavy from wastewater have increased recent years. Although some approaches effectively contaminants, their high preparation usage costs may limit practical applications. Many review articles been published toxicity treatment for removing wastewater. This focuses main pollution, chemical transformation, toxicological impacts environment, harmful effects ecosystem. It also examines advances cost-effective techniques physicochemical adsorption using biochar zeolite ion exchangers, well decomposition complexes through advanced oxidation processes (AOPs). Finally, advantages, applications, future potential these discussed, along with any challenges limitations that must be considered.

Language: Английский

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Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review

Environmental Chemistry Letters, Journal Year: 2022, Volume and Issue: 20(4), P. 2385 - 2485

Published: May 7, 2022

Abstract In the context of climate change and circular economy, biochar has recently found many applications in various sectors as a versatile recycled material. Here, we review application biochar-based for carbon sink, covering agronomy, animal farming, anaerobic digestion, composting, environmental remediation, construction, energy storage. The ultimate storage reservoirs are soils, civil infrastructure, landfills. Biochar-based fertilisers, which combine traditional fertilisers with nutrient carrier, promising agronomy. use feed additive animals shows benefits terms growth, gut microbiota, reduced enteric methane production, egg yield, endo-toxicant mitigation. Biochar enhances digestion operations, primarily biogas generation upgrading, performance sustainability, mitigation inhibitory impurities. composts, controls release greenhouse gases microbial activity. Co-composted improves soil properties crop productivity. Pristine engineered can also be employed water remediation to remove pollutants. added cement or asphalt, thus conferring structural functional advantages. Incorporating biocomposites insulation, electromagnetic radiation protection moisture control. Finally, synthesising materials requires additional functionalisation.

Language: Английский

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Review on biomass feedstocks, pyrolysis mechanism and physicochemical properties of biochar: State-of-the-art framework to speed up vision of circular bioeconomy

Journal of Cleaner Production, Journal Year: 2021, Volume and Issue: 297, P. 126645 - 126645

Published: March 9, 2021

Language: Английский

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Modified biochar: synthesis and mechanism for removal of environmental heavy metals

Carbon Research, Journal Year: 2022, Volume and Issue: 1(1)

Published: June 18, 2022

Abstract With social progress and industrial development, heavy metal pollution in water soils environment is becoming more serious. Although biochar a low-cost environmentally friendly adsorbent for ions, its adsorption immobilization efficiency still need to be improved. As an upgraded version of biochar, modified has attracted extensive attention the scientific community. This review summarized recent research on treatment methods pollutants using biochar. The features advantages modification techniques such as physical modification, chemical biological other categories were discussed. mechanism removing metals from soil by was summarized. It found that had better performance after which provided higher surface areas functional groups, enough binding sites combine ions. Biochar very promising candidate environment. Furthermore, some high valent ions could reduced low metals, Cr(VI) reduction Cr(III), form precipitates in-situ sorption-reduction-precipitation strategy. However, it direction efforts develop high-efficiency with low-cost, sorption capacity, photocatalytic performance, no secondary future.

Language: Английский

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Production and beneficial impact of biochar for environmental application: A comprehensive review

Bioresource Technology, Journal Year: 2021, Volume and Issue: 337, P. 125451 - 125451

Published: June 24, 2021

Language: Английский

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Biochar as an Eco-Friendly and Economical Adsorbent for the Removal of Colorants (Dyes) from Aqueous Environment: A Review

Water, Journal Year: 2020, Volume and Issue: 12(12), P. 3561 - 3561

Published: Dec. 18, 2020

Dyes (colorants) are used in many industrial applications, and effluents of several industries contain toxic dyes. exhibit toxicity to humans, aquatic organisms, the environment. Therefore, dyes containing wastewater must be properly treated before discharging surrounding water bodies. Among treatment technologies, adsorption is most preferred technique sequester from Many studies have reported removal using biochar produced different biomass, e.g., algae plant forest, domestic residues, animal waste, sewage sludge, etc. The aim this review provide an overview application as eco-friendly economical adsorbent remove colorants (dyes) aqueous This highlights routes production, such hydrothermal carbonization, pyrolysis, liquefaction. Biochar possesses numerous advantages, being eco-friendly, low-cost, easy use; various precursors available abundance converted into biochar, it also has recyclability potential higher capacity than other conventional adsorbents. From literature review, clear that a vital candidate for with above 80%.

Language: Английский

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Biochar production techniques utilizing biomass waste-derived materials and environmental applications – A review

Journal of Hazardous Materials Advances, Journal Year: 2022, Volume and Issue: 7, P. 100134 - 100134

Published: July 23, 2022

Language: Английский

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Enhanced aqueous Cr(VI) removal using chitosan-modified magnetic biochars derived from bamboo residues

Chemosphere, Journal Year: 2020, Volume and Issue: 261, P. 127694 - 127694

Published: July 20, 2020

Language: Английский

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A review of biochar in anaerobic digestion to improve biogas production: Performances, mechanisms and economic assessments

Bioresource Technology, Journal Year: 2021, Volume and Issue: 341, P. 125797 - 125797

Published: Aug. 18, 2021

Language: Английский

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Valorization of municipal wastes using co-pyrolysis for green energy production, energy security, and environmental sustainability: A review

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 421, P. 129749 - 129749

Published: April 19, 2021

Language: Английский

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