Synthesis of reactive iron impregnated nanoporous activated carbon and its application in anaerobic biological treatment to enhance biodegradability of ortho‐phenylenediamine. Issue 6 (23rd May 2014)

• Record Type: Journal Article
• Authors: Karthikeyan, Sekar; Judia Magthalin, Christopher; Mahesh, Mannacharaju; Anandan, Chinnasamy; Sekaran, Ganesan
• Is Part Of: Journal of chemical technology & biotechnology. Volume 90:Issue 6(2015:Jun.)
• Page Start: 1013
• Page End: 1026
• Publication Date: 2014-05-23
• Subjects: Biotechnology -- Periodicals; Chemistry, Technical -- Periodicals; Chemical engineering -- Periodicals; Industries -- Environmental aspects -- Periodicals; 660
• DOI: 10.1002/jctb.4403
• Languages: English
• ISSNs: 0268-2575

Abstract

<abstract abstract-type="main" id="jctb4403-abs-0001"> <title>Abstract</title> <sec id="jctb4403-sec-0001" sec-type="section"> <title>BACKGROUND</title> <p id="jctb4403-para-0001"> <bold>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‐H<sub>2</sub>O<sub>2</sub> oxidation system followed by anaerobic biological treatment to destroy OPD in aqueous solution.</bold> </p> </sec> <sec id="jctb4403-sec-0002" sec-type="section"> <title>RESULTS</title> <p id="jctb4403-para-0002"> <bold>IINPAC‐H<sub>2</sub>O<sub>2</sub> 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; H<sub>2</sub>O<sub>2</sub> 1.76 mmol/L<sup>−1</sup>; IINPAC 0.2 g L<sup>−1</sup> and OPD 2000 mg L<sup>−1</sup>. The biodegradability index (BOD<sub>5</sub>/COD) of OPD was increased from 0.1 to 0.45 under optimum conditions. The IINPAC‐H<sub>2</sub>O<sub>2</sub> treated effluent was further treated in a fluidized anaerobic reactor using <italic>Enterococcus faecalis sp.</italic> (GenBank: KF656727).</bold> </p> </sec> <sec id="jctb4403-sec-0003" sec-type="section"> <title>CONCLUSION</title> <p id="jctb4403-para-0003"> <bold>The integrated catalytic IINPAC‐H<sub>2</sub>O<sub>2</sub> oxidation system and anaerobic biological treatment process removed 98.45% of COD and 79% of BOD<sub>5</sub>. Stability and reusability tests of IINPAC showed that it could retain its catalytic activity even after 15 cycles. © 2014 Society of Chemical Industry</bold> </p> </sec> </abstract>