UV enhanced denitrification using chlorine from seawater electrolysis for hydrogen production
UV enhanced denitrification using chlorine from seawater electrolysis for hydrogen production
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利用海水电解中的氯进行紫外线强化反硝化制氢
DOI：
10.1016/j.ijhydene.2020.08.129
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发表时间：
2020-09
影响因子：
7.2
通讯作者：
Pan Xinxiang
中科院分区：
文献类型：
--
作者：
Yang Shaolong;An Jinxin;Xiang Xianbo;Han Zhitao;Pan Xinxiang
海水电解是产生氢能的一种有吸引力的方式。然而，为了将该技术商业化，数十年来一直致力于开发无氯制氧电极。与减少阳极氯形成的常见想法不同，我们的目标是重新利用海水电解产生的废氯来减少氮氧化物（NOx）的排放。在半连续鼓泡反应器中研究了 254 nm 紫外线 (UV) 照射下电解含氯海水的 NOx 去除性能。在有和没有紫外线照射的情况下对每个因素进行了比较参数实验。在所有研究条件下都观察到紫外线照射对氯的反硝化性能的显着贡献。在最佳条件下，紫外线照射电解海水的反硝化效率提高了十倍。初步探讨了自由基可能的反应机制。结果表明，紫外线照射电解海水是重复利用电解氯和减少酸性气体排放的一种有前景的方法。
Seawater electrolysis is an attractive way to generate hydrogen energy. However, to commercialize this technology, it has been focused on developing chlorine-less oxygen generating electrodes for decades. Here, different from common ideas of minimizing chlorine formation at the anode, we aimed at reusing the waste chlorine from seawater electrolysis to mitigate nitrogen oxide (NOx) emissions. NOx removal performance of electrolyzed seawater containing chlorine was investigated under 254 nm ultraviolet (UV) irradiation in a semi-continuous bubbling reactor. Comparative parametric experiments were conducted for each factor with and without UV irradiation. Significant contributions of UV irradiation on denitrification performance of chlorine were observed under all investigated conditions. A ten-folder improvement in denitrification efficiency by the UV irradiated electrolyzed seawater was achieved under optimal conditions. Possible free radicals’ reaction mechanisms were discussed preliminarily. Results reveal that UV irradiated electrolyzed seawater is a promising way to reuse electrolyzed chlorine and mitigate acid gas emissions.
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影响因子：
7.2
作者：
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通讯作者：
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影响因子：
13.6
作者：
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影响因子：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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