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Advancements in heavy metals removal from effluents employing nano-adsorbents: Way towards cleaner production

Due to the development in science field which gives not only benefit but also introducesundesirable pollution to the environment. This pollution is due to poor discharge activities of industrial effluents into the soil and water bodies, surface run off from fields of agricultural lands, dumping of u...

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Published in:Environmental research 2022-01, Vol.203, p.111815-111815, Article 111815
Main Authors: R., Janani, Gurunathan, Baskar, K, Sivakumar, Varjani, Sunita, Ngo, Huu Hao, Gnansounou, Edgard
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container_title Environmental research
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creator R., Janani
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description Due to the development in science field which gives not only benefit but also introducesundesirable pollution to the environment. This pollution is due to poor discharge activities of industrial effluents into the soil and water bodies, surface run off from fields of agricultural lands, dumping of untreated wastes by municipalities, and mining activites, which deteriorates the cardinal virtue of our environment and causes menace to human health and life. Heavy metal(s), a natural constituent on earth's crust and economic important mineral, due to its recalcitrant effects creates heavy metal pollution which affects food chain and also reduces the quality of water. For this, many researchers have performed studies to find efficient methods for wastewater remediation. One of the most promising methods from economic point of view is adsorption, which is simple in design, but leads to use of a wide range of adsorbents and ease of operations. Due to advances in nanotechnology, many nanomaterials were used as adsorbents for wastewater remediation, because of their efficiency. Many researchers have reported that nanoadsorbents are unmitigatedly a fruitful solution to address this world's problem. This review presents a potent view on various classes of nanoadsorbents and their application to wastewater treatment. It provides a bird's eye view of the suitability of different types of nanomaterials for remediation of wastewater and Backspace gives up-to-date information about polymer based and silica-based nanoadsorbents. •Adsorption is versatile, economic and accessible method with a wide range of adsorbents.•Applications of various nano adsorbents for wastewater treatment are discussed.•Carbon based nanomaterials shows high efficiency in removal of heavymetals.•Chitosan is biodegradable polymer based nanomaterial for waste water treatment.
doi_str_mv 10.1016/j.envres.2021.111815
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subjects Adsorption
Heavy metal ions
Humans
Metals, Heavy - analysis
Nano-adsorbents
Pollutants
Waste Water - analysis
Wastewater treatment
Water Pollutants, Chemical - analysis
Water Purification
title Advancements in heavy metals removal from effluents employing nano-adsorbents: Way towards cleaner production
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