Fe<sup>3+</sup>-TiO<sub>2</sub>/AC三维电极处理氨氮模拟废水研究

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摘要采用泥浆法制备Fe³⁺-TiO₂/AC复合材料,通过XRD和SEM对复合材料进行表征,以复合材料为粒子电极,石墨板为阴阳极,构建三维电极系统处理氨氮模拟废水,探究电解电压、电解质NaCl浓度、初始pH值及粒子电极投入量对氨氮去除的影响,并应用响应曲面法对处理废水的条件进行优化。结果表明:在电解电压为18 V,电解质NaCl浓度为6.7 g·L^-1,溶液初始pH值为9.00,粒子电极投入量为10.0 g·L^-1时,电解40 min后,氨氮去除率为96.86%。采用响应曲面法优化后,在电解电压为18 V,粒子电极投入量为9.9 g·L^-1,初始pH值为9.10条件下,电解40 min后,氨氮去除率最佳为97.61%。以上研究结论可为氨氮废水的工业处理提供一定的参考。

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	李健
	朱菊芬
	闫龙
	王玉飞
	范晓勇
	武建军

关键词：活性炭粒子电极氨氮废水电化学响应曲面法

Abstract： The Fe³⁺-TiO₂/AC composite material is prepared by slurry method and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). A three-dimensional electrode electrochemical system is constructed using the Fe³⁺-TiO₂/AC composite material as particle electrode and graphite plates of the same specifications as anode and cathode to treat simulated ammonia nitrogen wastewater. The effects of electrolytic voltage, electrolyte concentration(NaCl), initial pH and particle electrode dosage on the removal of ammonia nitrogen are investigated, and the response surface method is applied to optimize the conditions for the treatment of simulated ammonia nitrogen wastewater. The result show that the removal rate of ammonia nitrogen from the simulated wastewater is 96.86% after 40 min of electrolysis under the conditions of electrolytic voltage of 18 V, electrolyte concentration(NaCl) of 6.7 g·L^-1, initial pH of 9.00 and particle electrode input of 10.0 g·L^-1. After optimization by response surface method, the best ammonia nitrogen removal rate of simulated wastewater is 97.61% at 40 min with electrolysis voltage of 18 V, particle electrode input of 9.9 g·L^-1 and initial pH of 9.10. The above research conclusions can provide some reference for the industrial treatment of ammonia nitrogen wastewater.

Keywords： activated carbon particle electrodes ammonia nitrogen wastewater electrochemical response surface method

Received 2021-12-02;

Fund:国家自然科学基金项目(22168043);陕西省科技厅科研资助项目(2020SF-408,2016KTZDGY08-04-01,2020TD-031,);榆林市科技局科学技术研究与开发项目(2019-102-3)。

Corresponding Authors: 李健,副教授,E-mail:lijian5220@163.com。 Email: lijian5220@163.com

About author: 李健(1980-),男,硕士,副教授,现从事固体废弃物资源化利用和工业水处理方面的研究。

引用本文:

李健, 朱菊芬, 闫龙, 王玉飞, 范晓勇, 武建军.Fe³⁺-TiO₂/AC三维电极处理氨氮模拟废水研究[J]. 化学工业与工程, 2022,39(5): 57-65

LI Jian, ZHU Jufen, YAN Long, WANG Yufei, FAN Xiaoyong, WU Jianjun.Treatment of simulated ammonia nitrogen wastewater by Fe³⁺-TiO₂/AC based three-dimensional electrode[J]. Chemcial Industry and Engineering, 2022,39(5): 57-65

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