S. A. Kumar, G. Lekshmi, Rajesh Banu Jeyakumar, I. Yeom
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引用次数: 18
Abstract
Combined heterogeneous and homogenous photo-catalytic degradation of hospital wastewater was investigated. Three processes – solar/TiO 2 /H 2 O 2 , solar/Fe 2+ /H 2 O 2 and solar/TiO 2 /Fe 2+ /H 2 O 2 – were evaluated. The solar/TiO 2 /Fe 2+ /H 2 O 2 process displayed increased efficiency due to the synergetic effect of homogeneous and heterogeneous photo-catalytic reaction. The combination increased the photo process efficiency by decreasing the reaction time of the separate operations and decreased the cost of treatment. The optimal conditions enabling over 99% reduction of chemical oxygen demand (COD) were pH 7, 0.5 g/L Fe 2+ , 0.2 g/L TiO 2 and 1.35 g/L H 2 O 2 . The effluent COD and total suspended solids concentrations were 20 and 30 mg/L, respectively, which met the discharge standard requirements.
期刊介绍：
The Water Quality Research Journal publishes peer-reviewed, scholarly articles on the following general subject areas:
Impact of current and emerging contaminants on aquatic ecosystems
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Water quality in remote areas
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The Water Quality Research Journal is a quarterly publication. It is a forum for original research dealing with the aquatic environment, and should report new and significant findings that advance the understanding of the field. Critical review articles are especially encouraged.
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