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Environmental Engineering Research 2018;23(2): 129-135. DOI: https://doi.org/10.4491/eer.2017.087
Efficient use of ferrate(VI) in the oxidative removal of potassium hydrogen phthalate from aqueous solutions
Diwakar Tiwari1, Lalsaimawia Sailo1, Yi-Yong Yoon2, and Seung-Mok Lee2
1Department of Chemistry, School of Physical Science, Mizoram University, Aizawl-796004, India
2Department of Environmental Engineering, Catholic Kwandong University, Gangneung 25601, Republic of Korea
Corresponding Author: Yi-Yong Yoon ,Tel: +82-33-649-7535, Fax: +82-33-642-7635, Email: yoonyy@cku.ac.kr
Seung-Mok Lee ,Tel: +82-33-649-7535, Fax: +82-33-642-7635, Email: leesm@cku.ac.kr
Received: July 3, 2017;  Accepted: October 12, 2017.
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The aim of this study is to assess the applicability of ferrate(VI) in the efficient treatment of aqueous waste contaminated with potassium hydrogen phthalate (KHP) which is known to be a potent endocrine disrupting chemicals. Simulated batch reactor operations were conducted at a wide range of pH (7.0 to 12.0) and molar ratios of KHP to ferrate(VI). Kinetic studies were performed in the degradation process and overall rate constant was found to be 83.40 L/mol/min at pH 8.0. The stoichiometry of ferrate(VI) and KHP was found to be 1:1. Further, lower pH values and higher KHP concentrations were favoured greatly the degradation of KHP by ferrate(VI). Total organic carbon analysis showed that partial mineralization of KHP was achieved. The presence of several background electrolytes were studied in the degradation of KHP by ferrate(VI).
Keywords: Background electrolytes | Endocrine disrupting chemical (EDC) | Ferrate(VI) | Mineralization | Potassium hydrogen phthalate (KHP)
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