Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
Water Res. 2018 Aug 1;139:58-65. doi: 10.1016/j.watres.2018.03.066. Epub 2018 Mar 27.
High electrical energy is required for the electro-Fenton process to remove pharmaceuticals and personal care products (PPCPs) in wastewater. The aim of this study was to develop a novel and more cost-effective process, specifically a microbial electro-Fenton cell (MeFC), for treating PPCPs in wastewater. Acetylene black was selected as the catalyst for HO electrogeneration and Fe-Mn binary oxide for hydroxyl radical production. In addition to lowering energy needs, the MeFC produced a maximum power density of 112 ± 11 mW/m with 1 g/L acetate as a representative substrate and 10 mg/L carbamazepine (CBZ) as a typical PPCP. Comparing with electro-Fenton process, the CBZ removal in the MeFC was 38% higher within 24 h operation (90% vs. 62%). Furthermore, the CBZ removal rate in the MeFC was 10-100 times faster than that in other biological treatment processes. Such enhanced degradation of CBZ in the MeFC was attributed to the synergistic reactions between radical oxidation of CBZ and biodegradation of degradative intermediates. The MeFC provides a promising method to remove PPCPs from wastewater coupling with efficient removal of other biodegradable organics.
电芬顿工艺去除废水中的药物和个人护理产品（PPCPs）需要高电能。本研究旨在开发一种新型且更具成本效益的工艺，即微生物电芬顿池（MeFC），用于处理废水中的 PPCPs。乙炔黑被选为 HO 电生成的催化剂，Fe-Mn 二元氧化物用于生成羟基自由基。除了降低能源需求外，MeFC 在以 1g/L 乙酸盐作为代表性底物和 10mg/L 卡马西平（CBZ）作为典型 PPCP 的条件下，产生了 112±11mW/m 的最大功率密度。与电芬顿工艺相比，MeFC 在 24h 内的 CBZ 去除率提高了 38%（90%对 62%）。此外，MeFC 中 CBZ 的去除速率比其他生物处理工艺快 10-100 倍。MeFC 中 CBZ 的这种增强降解归因于 CBZ 的自由基氧化和降解中间产物的生物降解之间的协同反应。MeFC 为去除废水中的 PPCPs 提供了一种很有前途的方法，同时还能有效去除其他可生物降解的有机物。
