Removal of Cr(VI) from Wastewater Using Red Gram Husk as Adsorbent

TLDR: In this article, the authors highlighted the need for new technologies, which are less expensive, require less maintenance and are energy effective, and are more energy efficient than the traditional technologies.

Abstract: Pure water is very important for human life All agriculture, industrial and commercial sector need water of required quality Pollution of water is due to all these sectors Waste from all sectors is entering freshwater everyday The demand for water is increasing while water availability is less because of improper waste disposal The removing pollutant from all water resources is costly so there is need for new technologies, which are less expensive, require less maintenance and are energy effective Chromium is widely used in electroplating, alloying, leather tanning, corrosion protection, etc [1] Chromite mining and processing units produce waste and effluent containing chromium in two oxidation states, for example, Cr(VI) and Cr(III) in aqueous solution Cr(VI) oxidizing properties is dangerous due to carcinogenicity [2] The potable water allows only 005 mg/lit Cr(VI) because of toxicity [3] Higher concentrations are in the industrial and mining effluents, which crosses permissible limit