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| Characteristic studies on treatment of high concentration rhodamine B with US/UV-Fenton system |
| WANG Wei-liang1,2, WANG Yu-fan1, LU Shao-yong3, JU Tian-tian4, ZHANG Ling-li1,2, LIU Xiao-hui1,2 |
1. College of Geography and Environment, Shandong Normal University, Jinan 250014, China;
2. Institute of Environment and Ecology, Shandong Normal University, Jinan 250014, China;
3. State Environmental Protection Scientific Observation and Research Station for Lake Dongtinghu(SEPSORSLD), Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
4. Shandong Provincial Construction Project Environmental Assessment Service Center Jinan 250012, China |
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Abstract The degradation of high concentration Rhodamine B by US/UV-Fenton system was investigated. Firstly, the degradation effects of Fenton, US-Fenton, UV-Fenton and US/UV-Fenton on RB were compared, and the reaction kinetics equation was found to be consistent with the pseudo first order kinetics, then the synergy in US/UV-Fenton system was analyzed. Secondly, the effects of five factors, e.g. initial solution pH, H2O2 dosage, mole ratio of H2O2 and Fe2+, reaction time and ultrasonic power, on the RB degradation ability of US/UV-Fenton system were investigated. The results showed that the RB decolorization rate was 99.9%, the removal rate of TOC and CODCr was 92.1% and 61.85% respectively, and the biodegradability of wastewater was improved from 0.277 to 0.503 under the optimum conditions. According to the law of the reaction, the reaction mechanism of US/UV-Fenton system was analyzed, and the synergy in the system was discussed.
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Received: 10 January 2016
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