Academic Journal
Denitrification mechanism in oxygen-rich aquatic environments through long-distance electron transfer
| العنوان: | Denitrification mechanism in oxygen-rich aquatic environments through long-distance electron transfer |
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| المؤلفون: | Wei, Ming-Zhi, Liu, Jin-Wei, Yang, Qin-Zheng, Xue, An, Wu, Hao, Ni, Jin-Ren, Winter, Lea R., Elimelech, Menachem, Zhao, Hua-Zhang |
| المصدر: | npj Clean Water ; volume 5, issue 1 ; ISSN 2059-7037 |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 2022 |
| الوصف: | The lack of electron donors in oxygen-rich aquatic environments limits the ability of natural denitrification to remove excess nitrate, leading to eutrophication of aquatic ecosystems. Herein, we demonstrate that electron-rich substances in river or lake sediments could participate in long-distance electron rebalancing to reduce nitrate in the overlying water. A microstructure containing Dechloromonas and consisting of an inner layer of green rust and an outer layer of lepidocrocite forms in the sediment-water system through synergetic evolution and self-assembly. The microstructure enables long-distance electron transfer from the sediment to dilute nitrate in the overlying water. Specifically, the inner green rust adsorbs nitrate and reduces the kinetic barrier for denitrification via an Fe(II)/Fe(III) redox mediator. Our study reveals the mechanism of spontaneous electron transfer between distant and dilute electron donors and acceptors to achieve denitrification in electron-deficient aquatic systems. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1038/s41545-022-00205-x |
| الاتاحة: | http://dx.doi.org/10.1038/s41545-022-00205-x https://www.nature.com/articles/s41545-022-00205-x.pdf https://www.nature.com/articles/s41545-022-00205-x |
| Rights: | https://creativecommons.org/licenses/by/4.0 ; https://creativecommons.org/licenses/by/4.0 |
| رقم الانضمام: | edsbas.A53284B5 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1038/s41545-022-00205-x |
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