Bio-electro-Fenton system for enhanced estrogens degradation.
Bio-electro-Fenton system for enhanced estrogens degradation.
复制标题
DOI：
10.1016/j.biortech.2013.03.157
复制
发表时间：
2013-06
影响因子：
11.4
通讯作者：
N. Xu;Yingyuan Zhang;H. Tao;Shungui Zhou;Yaqiong Zeng
中科院分区：
文献类型：
--
作者：
N. Xu;Yingyuan Zhang;H. Tao;Shungui Zhou;Yaqiong Zeng
研究了Fe@Fe2O3/非催化碳毡（NCF）复合阴极生物电芬顿（BEF）体系去除17β-雌二醇（E2）和17α-乙炔基雌二醇（EE 2）的可行性。利用生物电-芬顿系统和零价铁/O2系统产生的反应性氧化剂以及吸附去除E2和EE 2。在闭路条件下，系统10 h内对E2和EE 2的去除率分别为81%和56%，其中总铁离子和H2 O2的最高浓度分别为81和1.2mg/L。采用Fe@Fe2O3/NCF电极的BEF系统的最大功率密度为4.35W/m3。在芬顿氧化E2的过程中，发现了两个中间产物E1和6-OH-E2。本研究证明了E2和EE 2在配备Fe@Fe2O3/NCF电极的BEF系统中的降解命运，这为同时发电去除柠檬酸盐污染物提供了一种有前途且具有成本效益的解决方案。
The feasibility of removing estrogens including 17β-estradiol (E2) and 17α-ethynyl-estradiol (EE2) was studied in a bio-electro-Fenton (BEF) system equipped with a Fe@Fe2O3/non-catalyzed carbon felt (NCF) composite cathode. E2 and EE2 were removed by reactive oxidants, produced by bio-electro-Fenton system and zero-valent iron/O2system, as well as adsorption. Under closed-circuit condition, 81% of E2 and 56% of EE2 were removed within 10h in the system, in which the highest concentration of total iron ions and H2O2reached 81 and 1.2mg/L, respectively. The maximum power density of BEF system equipped with Fe@Fe2O3/NCF electrode was 4.35W/m3. Two intermediates of E1 and 6-OH-E2 were identified during Fenton oxidation of E2. This study demonstrates the degradation fate of E2 and EE2 in a BEF system equipped with Fe@Fe2O3/NCF electrodes, which provides a promising and cost-effective solution for the removal of recalcitrant contaminants with simultaneous power generation.