Industrial effluent is a complex aqueous matrix comprising hazardous substances like phenols and toxic organics, often mixed with nutrients, suspended solids and multiple pollutants. Its constituents vary with industry, making it a significant environmental challenge requiring targeted treatment solutions. In view of their toxicity, non-biodegradability and persistent nature, their removal becomes an absolute necessity. Hexavalent chromium metal is one of the carcinogenic pollutants in the environment and is frequently present in wastewater from various industrial units. This chapter reports the characterisation and use of chitosan-coated activated carbon derived from the bark of Pongamia pinnata (CCPPAC) as a potential adsorbent for the removal of hexavalent chromium from aqueous solution. SEM analysis proved the mesoporous nature of the material under investigation. The batch experiment was carried out to study the effect of significant process parameters such as pH, contact time, adsorbent doses and initial Cr (VI) concentration. The maximum adsorption efficacy for Cr(VI) removal by CCPPAC was found at pH 4.5, 5 gm/lit of adsorbent dose and 140 min contact time. Under optimum conditions, 96% Cr (VI) was removed from aqueous solution. This investigation verifies that CCPPAC, a mesoporous material, can be successfully used as an excellent sorbent material for the removal of hexavalent chromium from contaminated water and thus can be applied in wastewater treatment. In this study, the activated carbon derived from the bark of the Pongamia pinnata tree and surface was successfully coated with chitosan and characterised employing FTIR and SEM studies. The newly developed CCPPAC high porous structure and excellent surface area.
Author (s) Details
Hunge Sudhir
Chintamani College of Science, Pombhurna, Dist. Chandrapur (M.S.)-442918,
India.
Please see the book here:- https://doi.org/10.9734/bpi/cmsrf/v4/5549
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