The remediation of wastewater containing 4-chlorophenol using integrated photocatalytic and biological treatment

Journal of Photochemistry and Photobiology. B, Biology
Mukesh GoelT R Sreekrishnan

Abstract

In this work, the performance of integrated photocatalytic and biological treatment was studied for the degradation of 4-chlorophenol (MCP) present in wastewaters. Photocatalysis was used as a pre-treatment to biological degradation. Pollutant removal efficiency was quantified using MCP removal and total organic carbon (TOC) removal. Both photocatalytic as well as biological treatments were carried out in batch reactors, using TiO(2) as the photocatalyst. The inoculum for biological experiments was obtained from paper mill effluent treatment plant and was developed through a process of selection and acclimatization. Effect of TiO(2) concentration on the photocatalytic degradation of MCP was studied along with the effect of the duration of photochemical oxidation and glucose concentrations (0 g/L, 1 g/L and 2 g/L) on the biodegradation of MCP. Integrated biological and photochemical degradation was found to be more effective in treating MCP, especially at higher concentrations (400 mg/L). An initial MCP concentration of 400 mg/L required 96 h for complete mineralization when treated with the process combination, whereas the treatment went on up to 264 h when biodegradation alone was employed.

Citations

Feb 2, 2013·Iranian Journal of Environmental Health Science & Engineering·Roya AlimoradzadehMohammad Reza Mehrasbi
Dec 3, 2014·Journal of Photochemistry and Photobiology. B, Biology·S S ShindeK Y Rajpure
Oct 20, 2010·The Science of the Total Environment·I OllerJ A Sánchez-Pérez
Nov 13, 2015·Journal of Photochemistry and Photobiology. B, Biology·Arjunan NithyaKandasamy Jothivenkatachalam
May 27, 2016·Journal of Environmental Health Science & Engineering·L D NaiduPieter Stroeve

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