铁、锰催化剂对电芬顿降解抗生素环丙沙星性能的影响，以及拓展酸性矿山排水的利用。
Effect of Fe, Mn catalysts on the performance of electro-Fenton degradation of antibiotic ciprofloxacin, and expanding the utilizing of acid mine drainage.
机构信息
Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
出版信息
Sci Total Environ. 2020 Jun 10;720:137560. doi: 10.1016/j.scitotenv.2020.137560. Epub 2020 Feb 24.
In this work, the removal of ciprofloxacin (CIP) was studied by electro-Fenton (EF) technique using different molar ratio of Mn/Fe based on a chemically modified graphite felt (MGF) cathode. The CIP removal efficiency reached 95.62% in 30 min and the removal efficiency of total organic carbon (TOC) reached 94.00% in 8 h under optimal conditions (50 mg/L initial CIP concentration, 400 mA applied current, 2:1 M ratio of Mn/Fe, and 3 initial pH value). A possible pathway of CIP degradation was supposed according to the analysis of the by-products detected during the EF process. An expanding experiment for CIP removal was also conducted by using acid mine drainage (AMD) rich in iron and manganese to replace the homogeneous solution in EF, and the CIP removal efficiency of 89.00% in 60 min under the optimal conditions may assign new perspectives for organic pollutants removals by utilizing AMD.
在这项工作中，通过电芬顿（EF）技术，使用不同摩尔比的 Mn/Fe 基于化学改性石墨毡（MGF）阴极，研究了环丙沙星（CIP）的去除。在最佳条件下（初始 CIP 浓度为 50mg/L，施加电流为 400mA，Mn/Fe 摩尔比为 2:1，初始 pH 值为 3），30min 内 CIP 的去除效率达到 95.62%，8h 内总有机碳（TOC）的去除效率达到 94.00%。根据 EF 过程中检测到的副产物分析，推测了 CIP 降解的可能途径。还通过使用富含铁和锰的酸性矿山排水（AMD）代替 EF 中的均相溶液，进行了 CIP 去除的扩展实验，在最佳条件下 60min 内 CIP 的去除效率达到 89.00%，这为利用 AMD 去除有机污染物提供了新的视角。
Zotero 插件