Fujian Soil and Water Conservation Test Station
College of Environmentaland Resource Sciences, Fujian Normal University

17β-雌二醇(E2)作为典型的内分泌干扰物(EDCs) 普遍存在于废水和地表水中, 可引起潜在水环境风险。 利用绿色合成纳米铁(Fe NPs)活化过二硫酸盐(PDS) 去除 E2, 并采用响应面优化法探究最佳的实验条件。 实验结果表明:响应面二次多项式模型显著,失拟项不显著,模型合理且拟合性较好。 当 E2 初始浓度 3 mg·L-1时,Fe NPs 投加量 0.09 g·L-1、氧化剂 PDS 浓度 6 mmol·L-1、体系 pH 为 3、反应温度 30 ℃ 的条件下 E2 去除率达到 99.3%;电子顺磁共振(EPR)技术和淬灭实验表明 SO·-4 和·OH 是体系中主要的自由基;Fe NPs 循环使用 4 次时体系对 E2 的降解效率仍达到 90.0%,表明绿色合成 Fe NPs 是一种有效的类芬顿催化剂。

17β-estradiol (E2) is a typical endocrine disrupting compounds (EDCs) commonly foundin wastewater and surface water, and is considered to cause potential environmental risks. In thispaper, response surface methodology (RSM) was used to explore the optimal experimental conditionsof the removal of E2 from wastewater with green-synthesized iron nanoparticles (Fe NPs) to activateperoxydisulfate (PDS). The results showed that the quadratic polynomial model established by RSMwas significant, while the mismatch term was not significant, and the model had good fitting perform⁃ance. When the initial concentration of E2 was 3 mg·L-1, the E2 removal rate reached 99.3% underthe conditions of Fe NPs dosage of 0.09 g·L-1, oxidant PDS concentration of 6 mmol·L-1, pH of 3,and reaction temperature of 30 ℃. The electron paramagnetic resonance ( EPR) technology andquenching experiment verified that the activation of PDS by Fe NPs mainly produced SO·4and ·OH.After 4 cycles of reuse, Fe NPs still had high catalytic activity, with a degradation efficiency of 90.0%for E2, indicating that green- synthesized Fe NP is an efficient Fenton-like catalyst.

福建省自然科学基金资助项目(2022J01649);福建省水利科技资助项目(MSK202208)

林强, 龚开晟, 金晓英. 响应面法优化纳米铁活化过二硫酸盐降解 17β-雌二醇[J]. 能源环境保护, 2023,37(6): 185-191.

LIN Qiang, GONG Kaisheng, JIN Xiaoying. Response surface methodology to optimize the degradation of 17β-estra⁃diol by iron nanoparticles activated peroxydisulfate[J]. Energy Environmental Protection, 2023, 37(6): 185-191.