دورية أكاديمية
Enhancement of decomposition of 2-chlorophenol with ultrasound/H2O2 process
| العنوان: | Enhancement of decomposition of 2-chlorophenol with ultrasound/H2O2 process |
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| المؤلفون: | Lin, JG, Chang, CN, Wu, JR, Ma, YS |
| المساهمون: | 環境工程研究所, Institute of Environmental Engineering |
| سنة النشر: | 1996 |
| المجموعة: | National Chiao Tung University: NCTU Institutional Repository / 國立交通大學機構典藏 |
| مصطلحات موضوعية: | catalyst, 2-chlorophenol, decomposition, ionic strength, pH, pseudo-first-order kinetics, TOC removal, ultrasound H2O2 process |
| الوصف: | We investigated the effects of pH, ionic strength, catalyst, and initial concentration on both decomposition of 2-chlorophenol (2-cp) and removal of total organic carbon (TOC) in aqueous solution with ultrasonic amplitude 120 mu m and H2O2 (200 mg/l). When the initial concentrations of 2-cp was 100 mg/l and the pH was controlled at 3, the rate of 2-cp decomposition was enhanced up to 6.6-fold and TOC removal up td 9.8-fold over pH controlled at 11. At pH 3, the efficiency of decomposition of 2-cp was 99% but the removal of TOC was only 63%; a similar situation applied at pH 7 and 11. Hence intermediate compounds were produced and 2-cp was not completely mineralized. When the concentration of ionic strength was increased from 0.001 to 0.1 M, the rate of 2-cp decomposition was enhanced only 0.3-fold, whereas the TOC removal was not enhanced. In comparison of the effects of pH and ionic strength, pH had greater influence on both 2-cp decomposition and TOC removal than ionic strength. The effect of a catalyst (FeSO4) on decomposition of 2-cp was insignificant comparing with direct addition of H2O2 The reaction rate at a smaller initial concentration of 2-cp (10 mg/l) was more rapid than at a greater one (100 mg/l). The rate of 2-cp decomposition and TOC removal appeared to follow pseudo-first-order reaction kinetics. Copyright (C) 1996 IAWQ. Published by Elsevier Science Ltd. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 0273-1223 |
| العلاقة: | http://dx.doi.org/10.1016/S0273-1223Test(96)00785-8; http://hdl.handle.net/11536/1531Test; WATER SCIENCE AND TECHNOLOGY |
| DOI: | 10.1016/S0273-1223(96)00785-8 |
| الإتاحة: | https://doi.org/10.1016/S0273-1223Test(96)00785-8 http://hdl.handle.net/11536/1531Test |
| رقم الانضمام: | edsbas.A1EF045C |
| قاعدة البيانات: | BASE |
| تدمد: | 02731223 |
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| DOI: | 10.1016/S0273-1223(96)00785-8 |