Journal
CHEMICAL ENGINEERING JOURNAL
Volume 260, Issue -, Pages 28-36Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2014.08.042
Keywords
alpha-FeOOH; p-Chloronitrobenzene; Oxidation; Water treatment
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Funding
- China's National Natural Science Foundation [51108291, 51208455]
- open project of the State Key Laboratory of Urban Water Resources
- Environment at the Harbin Institute of Technology [QA201018]
- Research Fund for the Doctoral Program of Higher Education of China [20110101120033]
- National Major Program on Pollution Control and Management of Water Body [2012ZX07403-003]
- Innovative Research Team Grant from Zhejiang Province [2010R50037]
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A heterogeneous Fenton-like process was studied using synthesised goethite (alpha-FeOOH) and hydrogen peroxide (H2O2) to degrade p-chloronitrobenzene (pCNB) in water. The effect on the treatment efficiency of the initial pH, the dosage of hydrogen peroxide and goethite and the presence of humic acid and bicarbonate were quantified. At the optimal conditions (pH = 6.0, H2O2 = 6.6 mg/L, and goethite = 333 mg/L), over 80% of pCNB was removed within 30 min. Humic acid and bicarbonate were found to inhibit the pCNB degradation, probably because they compete with pCNB for the (OH)-O-center dot produced. Intermediate oxidation products were identified, and a pCNB oxidation pathway is proposed. The findings demonstrate that alpha-FeOOH combined with H2O2 has potential as an advanced oxidation process for water pollution control. (C) 2014 Elsevier B.V. All rights reserved.
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