Open AccessFerrioxalate-induced solar photo-Fenton treatment of natural rubber latex wastewaters
Author(s) -
Lekshmi Ashok,
S. Adishkumar,
J. Rajesh Banu,
Ick Tae Yeom
Publication year - 2015
Publication title -
water quality research journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 44
eISSN - 2408-9443
pISSN - 1201-3080
DOI - 10.2166/wqrjc.2015.054
Subject(s) - oxalic acid , chemical oxygen demand , wastewater , chemistry , natural rubber , pulp and paper industry , photocatalysis , sewage treatment , degradation (telecommunications) , nuclear chemistry , environmental chemistry , environmental engineering , environmental science , organic chemistry , catalysis , telecommunications , computer science , engineering
This study evaluated a ferrioxalate-induced solar photo-Fenton process for natural rubber latex wastewater treatment. The reaction was carried out in a laboratory scale solar photo-Fenton plug flow baffle reactor. An optimization study was performed using a central composite experimental design including the following variables: pH, initial concentrations of H2O2, Fe2+, and oxalic acid. The photocatalytic degradation efficiency was determined by the analysis of COD removal. Under the optimum conditions of pH = 4, Fe2+ = 1.3 g/L, oxalic acid = 2.25 g/L, H2O2 = 82.5 g/L, and solar irradiation time of 6 hours, the COD removal efficiency was 99%. Treatment of latex wastewater by ferrioxalate-induced solar photo-Fenton process increased biodegradability ratio from 0.36 to 0.7 in 2 hours. The overall cost of ferrioxalate-induced solar photo-Fenton oxidation for the treatment of 5 m3 of latex wastewater per day was estimated to be US $85/m3.
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