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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Rhizosphere Bacteria in Plant Growth Promotion, Biocontrol, and Bioremediation of Contaminated Sites: A Comprehensive Review of Effects and Mechanisms

International Journal of Molecular Sciences, Journal Year: 2021, Volume and Issue: 22(19), P. 10529 - 10529

Published: Sept. 29, 2021

Agriculture in the 21st century is facing multiple challenges, such as those related to soil fertility, climatic fluctuations, environmental degradation, urbanization, and increase food demand for increasing world population. In meanwhile, scientific community key challenges crop production from existing land base. this regard, traditional farming has witnessed enhanced per acre yields due irregular injudicious use of agrochemicals, including pesticides synthetic fertilizers, but at a substantial cost. Another major concern modern agriculture that pests are developing pesticide resistance. Therefore, future sustainable requires alternative strategies can enhance an environmentally sound manner. The application rhizobacteria, specifically, plant growth-promoting rhizobacteria (PGPR), chemical gained much attention community. These harbor number mechanisms through which they promote growth, control pests, induce resistance various abiotic stresses. This review presents comprehensive overview involved growth promotion, biocontrol bioremediation contaminated soils. It also focuses on effects PGPR inoculation survival under stress. Furthermore, pros cons rhizobacterial along with directions discussed depth.

Language: Английский

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Biosorption of heavy metals by microorganisms: Evaluation of different underlying mechanisms

Chemosphere, Journal Year: 2022, Volume and Issue: 307, P. 135957 - 135957

Published: Aug. 17, 2022

Language: Английский

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A review on biosorptive removal of dyes and heavy metals from wastewater using watermelon rind as biosorbent

Environmental Advances, Journal Year: 2020, Volume and Issue: 2, P. 100007 - 100007

Published: Oct. 16, 2020

Sustainable wastewater treatment is one of the foremost challenges twenty first century. With ever increasing levels industrial toxic sludge disposal to water bodies, finding environment friendly and affordable options will remain a priority, especially for developing countries. Adsorption most researched used methods removing dyes heavy metals. using living non-living biomass, termed as biosorption has gained attention in last two decades due some promising results. Agricultural waste materials e.g. fruit wastes been widely dye metal sequestration from wastewater. Various researchers have analyzed potential watermelon rind (WMR) biosorbent found encouraging Functional groups such carboxyl hydroxyl are primarily responsible sorption metals into rind. The important parameters affecting contaminants were be pH co-solute concentration. Kinetic isotherm studies performed by numerous authors revealed that pseudo second order kinetic model Langmuir best suited describing WMR based feasibility reusable further proved results desorption several researchers. This paper reviews various aspects utilization contaminated water. effects factors pH, initial solute concentration, dose, activation etc. reviewed this paper.

Language: Английский

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Advances in biosorbents for removal of environmental pollutants: A review on pretreatment, removal mechanism and future outlook

Journal of Hazardous Materials, Journal Year: 2021, Volume and Issue: 420, P. 126596 - 126596

Published: July 6, 2021

Language: Английский

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Applications of machine learning algorithms for biological wastewater treatment: Updates and perspectives

Clean Technologies and Environmental Policy, Journal Year: 2021, Volume and Issue: 23(1), P. 127 - 143

Published: Jan. 1, 2021

Language: Английский

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Insights into the Domestic Wastewater Treatment (DWWT) Regimes: A Review

Water, Journal Year: 2022, Volume and Issue: 14(21), P. 3542 - 3542

Published: Nov. 4, 2022

It is expected that, by 2050, the rapid rise in population and simultaneous urbanization shall deplete clean water supplies. Domestic wastewater (DWW) contains inorganic organic components that can be harmful to aquatic organisms. Traditional remediation approaches (physical, chemical biological) used on-site or off-site purify polluted domestic (activated sludge, built-wetlands, stabilization ponds, trickling filters membrane bioreactors), each has its own advantages limitations. Biosorption through microorganisms, bacteria (microbe-mediated remediation), fungi (mycoremediation) algae (phycoremediation) shown promising results removing toxic chemicals nutrients. The type of waste concentration, heterogeneity level percentage clean-up required; feasibility technique efficiency, practicability, operational difficulties, environmental impact treatment costs are all factors considered when choosing a for (DWWT). This review focuses on roles conventional methods DWWT, including their merits, demerits future prospects. promotes concept “reduce, reuse recycle” DWWT also highlights problem emerging contaminants WWT regimes. We provide insights into different filtration procedures purification techniques synergism non-conventional strategies human environment health security.

Language: Английский

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Biosorption of heavy metals from aqueous solution by various chemically modified agricultural wastes: A review

Journal of Water Process Engineering, Journal Year: 2022, Volume and Issue: 46, P. 102446 - 102446

Published: Jan. 13, 2022

Language: Английский

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Engineering whole-cell microbial biosensors: Design principles and applications in monitoring and treatment of heavy metals and organic pollutants

Biotechnology Advances, Journal Year: 2022, Volume and Issue: 60, P. 108019 - 108019

Published: July 16, 2022

Language: Английский

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Producing bacterial nano-cellulose and keratin from wastes to synthesize keratin/cellulose nanobiocomposite for removal of dyes and heavy metal ions from waters and wastewaters

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2022, Volume and Issue: 656, P. 130355 - 130355

Published: Oct. 14, 2022

Language: Английский

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