| 光/电法氨氮降解过程中协同作用的研究 |
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| 引用本文： | 邱勇萍, 张国庆, 杨晓青, 区文仕, 钟美玲. 光/电法氨氮降解过程中协同作用的研究[J]. 环境工程学报, 2015, 9(1): 150-156. doi: 10.12030/j.cjee.20150125 |
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| 作者姓名： | 邱勇萍 张国庆 杨晓青 区文仕 钟美玲 |
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| 作者单位： | 1. 广东工业大学材料与能源学院, 广州 510006; 2. 佛山顺德都围环保科技工程有限公司, 佛山 528300 |
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| 基金项目： | 国家国际科技合作专项(2013DFG50150 2011DFB91-560) 广东省对外科技合作项目(2011B050200004) |
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| 摘 要： | 为了研究光/电法在氨氮降解过程中的协同作用,采用光/电法降解模拟工业循环冷却水中的氨氮,并对氨氮降解过程中的各影响因素进行了研究,考察了氯离子浓度和溶液pH对降解效率的影响。结果表明,与传统的光催化法和电化学法相比,光/电法在氨氮降解过程中存在良好的协同效应,因而具有更高的氨氮去除率,这主要归功于溶液氯离子的促进作用。另外,在酸性条件下,氨氮降解效率得到进一步加强。当pH在4~5之间,电流密度为10 mA/cm2,NaCl浓度为100 mg/L时,在经过90 min光/电法处理后氨氮去除率高达95%,且N2占总氨氮降解产物的84.2%。
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| 关 键 词： | 氨氮 循环冷却水 光/电法 协同作用 电流密度 |
| 收稿时间： | 2014-02-13 |
Study on synergistic effect of photo-electrical method for degradation of ammonia nitrogen |
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| Qiu Yongping, Zhang Guoqing, Yang Xiaoqing, Ou Wenshi, Zhong Meiling. Study on synergistic effect of photo-electrical method for degradation of ammonia nitrogen[J]. Chinese Journal of Environmental Engineering, 2015, 9(1): 150-156. doi: 10.12030/j.cjee.20150125 |
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| Authors: | Qiu Yongping Zhang Guoqing Yang Xiaoqing Ou Wenshi Zhong Meiling |
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| Affiliation: | 1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China; 2. Foshan Shunde Dowell Technological& Environmental Engineering Co., Ltd. Foshan 528300, China |
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| Abstract: | In order to investigate the synergistic effect of photo-electrical method on the ammonia nitrogen degradation, photo-electrical method was used to degrade ammonia nitrogen from simulated industrial circulating cooling water. And the influences of various parameters such as Cl- concentration, pH value on the degradation effect were also investigated. Experimental results showed that compared to the traditional photocatalytic method and electrochemical method, the photo-electrical method represents excellent synergistic effect, leading to a much higher ammonia nitrogen removal rate, which can be attributed to the facilitation of Cl-. In addition, degradation effect can be further enhanced under acidic conditions. For example, at a pH value of about 4~5, current density 10 mA/cm2, NaCl concentration 100 mg/L, the ammonia nitrogen removal rate can reach as high as 95% in 90 min, and 84.2% of total ammonia nitrogen degradation products is N2. |
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| Keywords: | ammonia nitrogen circulating cooling water photo-electrical method synergistic effect current density |
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