Comparison of different advanced oxidation processes for treatment of antibiotic aqueous solution
Comparison of different advanced oxidation processes for treatment of antibiotic aqueous solution
复制标题
DOI：
10.1016/j.desal.2010.02.019
复制
发表时间：
2010-06-01
期刊：
影响因子：
9.9
通讯作者：
Chaudhuri, Malay
中科院分区：
文献类型：
--
作者：
Elmolla, Emad S.;Chaudhuri, Malay
研究了芬顿、光-芬顿、TiO 2光催化和UV/ZnO工艺处理含阿莫西林、氨苄西林和氯唑西林的抗生素水溶液的技术经济比较。处理阿莫西林、氨苄西林和氯唑西林浓度分别为104、105和103 mg/L的抗生素水溶液的最佳操作条件为：芬顿法COD/H2 O2/Fe 2+摩尔比为1：3：030，pH值为3，光-芬顿法COD/H2 O2/Fe 2+摩尔比为1：1.5：0.075，pH值为3; UV/TiO 2/H2 O2工艺-TiO 2 1 g/L，环境pH类似于5，H2 O2 100 g/L; UV/ZnO工艺- ZnO 0.5 g/L，pH 11。除UV/ZnO工艺不能提高废水的可生化性外，其它工艺均能降解抗生素，提高废水的可生化性（BOD 5/COD）。光-芬顿法的反应速率常数（0.029 min（-1））高于芬顿法（0.0144 min（-1）），这可能是由于光还原Fe ~（3+）使Fe ~（2+）光化学再生，从而提高了羟基自由基的产生速率。UV/ZnO和UV/TiO 2/H2 O2的反应速率常数分别为0.00056 min（-1）和0.0005 min（-1），低于芬顿和光-芬顿反应速率常数。Photo-Fenton法是最具成本效益的相比，其他研究过程。(C)2010爱思唯尔有限公司版权所有。
The study was undertaken to compare from technical and economic point of view the treatment of antibiotic aqueous solution containing amoxicillin, ampicillin, and cloxacillin by Fenton, photo-Fenton, TiO2 photocatalytic and UV/ZnO processes. The best operating conditions for treatment of antibiotic aqueous solution containing 104, 105 and 103 mg/L of amoxicillin, ampicillin, and cloxacillin, respectively were: Fenton process COD/H2O2/Fe2+ molar ratio 1:3:030 and pH 3; photo-Fenton process COD/H2O2/Fe2+ molar ratio 1:1.5:0.075 and pH 3; UV/TiO2/H2O2 process - TiO2 1 g/L, ambient pH similar to 5 and H2O2 100 g/L; UV/ZnO process - ZnO 0.5 g/L and pH 11. All studied processes were able to degrade the antibiotics and improve biodegradability (BOD5/COD ratio), except for UV/ZnO process which did not improve biodegradability. Photo-Fenton process exhibited higher rate constant (0.029 min(-1)) than that of Fenton process (0.0144 min(-1)) and this may be ascribed to photochemical regeneration of Fe2+ ions by photoreduction of Fe3+ ions and hence increasing hydroxyl radical production rate. Rate constants of UV/ZnO process (0.00056 min(-1)) and UV/TiO2/H2O2 process (0.0005 min(-1)) were lower than that of Fenton and photo-Fenton processes. Photo-Fenton process appeared to be the most cost-effective compared to the other studied processes. (C) 2010 Elsevier B.V. All rights reserved.