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Phenol Contaminated Water Treatment on Several Modified Dimensionally Stable Anodes
Author(s) -
Jayathilaka Pavithra Bhakthi,
Hapuhinna Kushani Umanga Kumari,
Bandara Athula,
Nanayakkara Nadeeshani,
Subasinghe Nalaka Deepal
Publication year - 2017
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143017x14839994522623
Subject(s) - anode , phenol , electrochemistry , oxide , wastewater , metal , pollutant , chemistry , materials science , inorganic chemistry , electrode , metallurgy , environmental engineering , organic chemistry , environmental science
Phenolic compounds are some of the most common hazardous organics in wastewater. Removal of these pollutants is important. Physiochemical method such as electrochemical oxidation on dimensionally stable anodes is more convenient in removing such organic pollutants. Therefore, this study focuses on development of three different anodes for phenol contaminated water treatment. The performances of steel/IrO 2 , steel/IrO 2 ‐Sb 2 O 3 , and Ti/IrO 2 ‐Sb 2 O 3 anodes were tested and compared. Nearly 50, 76, and 84% of chemical oxygen demand removal efficiencies were observed for steel/IrO 2 , steel/IrO 2 ‐Sb 2 O 3 , and Ti/IrO 2 ‐Sb 2 O 3 anodes, respectively. The formation of intermediates was monitored for three anodes and the Ti/IrO 2 ‐Sb 2 O 3 anode showed the most promising results. Findings suggest that the developed anode materials can enhance phenol oxidation efficiency and that mixed metal oxide layer has major influence on the anode. Among the selected metal oxide mixtures IrO 2 ‐Sb 2 O 3 was the most suitable under given experimental conditions.