Title: Treatment of textile effluent using solar photo Fenton process with bio synthesised nZVI

Authors: K.J. Sosamony; P.A. Soloman

Addresses: Government Engineering College Thrissur, Kerala, 680009, India ' Government Engineering College Thrissur, Kerala, 680009, India

Abstract: One of the major industries causing environmental pollution is the textile industry. As the biodegradability of textile effluent is low, direct biological treatment is not feasible. Hence, steps are to be taken to enhance the biodegradability before biological treatment. This study has been focused on solar photo Fenton-like process (nZVI in place of Fe²⁺), named as advanced solar photo Fenton (ASPF) process, in which biologically produced nano zero valent iron (nZVI) is used. The results prove that nZVI can be synthesised successfully from Amaranthus Dubius leaf extract and it can be used effectively in the ASPF process for textile effluent treatment. Response surface methodology (RSM) with Box Behnken design (BBD) has been used for the analysis and optimisation of the process parameters in ASPF process. The biodegradability index (BI) improved from 0.21 to 0.40 under optimum conditions of pH 2.6, H₂O₂ 62.6 mM, nZVI 38.7mg/l and contact time 15 minutes.

Keywords: advanced solar photo Fenton; ASPF; biosynthesis; nano zero valent iron; nZVI; Box Behnken design; BBD; biodegradability index; BI.

DOI: 10.1504/IJEE.2021.118454

International Journal of Environmental Engineering, 2021 Vol.11 No.2, pp.118 - 131

Received: 06 May 2020
Accepted: 19 Sep 2020
Published online: 26 Oct 2021 *

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