Synthesis of reactive iron impregnated nanoporous activated carbon and its application in anaerobic biological treatment to enhance biodegradability of ortho-phenylenediamine

Karthikeyan, S and Judia Magthalin, C and Mahesh, M and Anandan, C and Sekaran, G (2015) Synthesis of reactive iron impregnated nanoporous activated carbon and its application in anaerobic biological treatment to enhance biodegradability of ortho-phenylenediamine. Journal of Chemical Technology and Biotechnology, 90 (6). pp. 1013-1026. ISSN 02682575

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Abstract

BACKGROUND: O-phenylene diamine (OPD) is a bioresistant and endocrine disrupting chemical. Fenton oxidation can partially degrade OPD, but the products formed are more bioresistant than OPD. The main objective of the present investigation is to create a novel integrated IINPAC-H2O2 oxidation system followed by anaerobic biological treatment to destroy OPD in aqueous solution. RESULTS: IINPAC-H2O2 oxidation (pre-treatment method) was attempted with the prepared iron impregnated nanoporous activated carbon (IINPAC) catalyst and degradation studies were carried out at optimum conditions, hydraulic reaction time 120 min; pH 7; H2O2 1.76 mmol/L-1; IINPAC 0.2 g L-1 and OPD 2000 mg L-1. The biodegradability index (BOD5/COD) of OPD was increased from 0.1 to 0.45 under optimum conditions. The IINPAC-H2O2 treated effluent was further treated in a fluidized anaerobic reactor using Enterococcus faecalis sp. (GenBank: KF656727). CONCLUSION: The integrated catalytic IINPAC-H2O2 oxidation system and anaerobic biological treatment process removed 98.45% of COD and 79% of BOD5. Stability and reusability tests of IINPAC showed that it could retain its catalytic activity even after 15 cycles.

Item Type: Article
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Mrs SK Pratibha
Date Deposited: 18 Jun 2018 11:48
Last Modified: 18 Jun 2018 11:48
URI: http://nal-ir.nal.res.in/id/eprint/12813

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