Evacuation of Hexavalent Chromium from an Aqueous Solution by Application of Chitosan Based Activated Carbon Prepared from Butea monosperma Bark
Asian Journal of Environment & Ecology · pp. 72–81 · Published 31 May 2022
10.9734/ajee/2022/v18i130306Abstract
Industrial waste water may pollute the environment because of the presence of heavy metal ions bonded together. Heavy metal is a major source of pollution and harm to the environment across the world. Biological and environmental damage is caused by heavy metal contamination of drinking water and wastewater. Toxic, non-biodegradable, and long-lasting, they are an imperative must to remove. Environmental pollution is exacerbated by the presence of hexavalent chromium metal ion in waste water from numerous industrial facilities. Standard physical and chemical treatment procedures for removing hexavalent chromium are documented in the literature. In addition to being expensive and energy consuming, these processes appear to also result in the accumulation of hazardous byproducts. The current study used chitosan-coated Butea monosperma bark activated carbon to extract hexavalent chromium from an aqueous solution. The batch experiment was used to investigate pH effect, time of contact with adsorbent, adsorbent dose, and the starting concentration of Cr (VI) ions. The pH of the biosorbent was found to be optimum at three for Cr(VI) sorption. The elimination of Cr(VI) from the solution will be accelerated with rise of contact time. Up to 94% more Cr (VI) can be extracted for every unit increase in adsorbent dose. As the blood level of Cr (VI) increased, so did the clearance rate. In this study, researchers discovered that pre-treated biosorbent was an excellent material for eliminating of Cr(VI) ions from contaminated water.
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