The effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen

Abstract In this work, the effect of weak acid anions on the ammonia removal has been extensively studied for the process of selective catalytic wet air oxidation (CWAO) of ammonia to nitrogen. It is found that the presence of weak acid anions can effectively enhance the ammonia conversion and selec...

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Autores principales:	Zidan Wang, Sohaib Hameed, Yaoyao Wen, Nuowei Zhang, Hengjun Gai, Jinbao Zheng, Bing H. Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/945826c2773a43c289c14892e4062399
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spelling	oai:doaj.org-article:945826c2773a43c289c14892e40623992021-12-02T15:05:53ZThe effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen10.1038/s41598-017-04207-52045-2322https://doaj.org/article/945826c2773a43c289c14892e40623992017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04207-5https://doaj.org/toc/2045-2322Abstract In this work, the effect of weak acid anions on the ammonia removal has been extensively studied for the process of selective catalytic wet air oxidation (CWAO) of ammonia to nitrogen. It is found that the presence of weak acid anions can effectively enhance the ammonia conversion and selectivity towards nitrogen. The combination between the weak acid anions and H+ to produce weak acid molecules is responsible for such enhancement. Firstly, the H+ consumption of weak acid anions can increase the NH3 concentration and thus the reactivity of ammonia oxidation, due to the shift to NH3 on the equilibrium of NH4 +/NH3. Secondly, the competition combination with H+ between the weak acid anions and NO2 − can increase the concentration of NO2 − and thus boosts the disproportionation reaction between NH4 + and NO2 − to produce nitrogen.Zidan WangSohaib HameedYaoyao WenNuowei ZhangHengjun GaiJinbao ZhengBing H. ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zidan Wang Sohaib Hameed Yaoyao Wen Nuowei Zhang Hengjun Gai Jinbao Zheng Bing H. Chen The effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen
description	Abstract In this work, the effect of weak acid anions on the ammonia removal has been extensively studied for the process of selective catalytic wet air oxidation (CWAO) of ammonia to nitrogen. It is found that the presence of weak acid anions can effectively enhance the ammonia conversion and selectivity towards nitrogen. The combination between the weak acid anions and H+ to produce weak acid molecules is responsible for such enhancement. Firstly, the H+ consumption of weak acid anions can increase the NH3 concentration and thus the reactivity of ammonia oxidation, due to the shift to NH3 on the equilibrium of NH4 +/NH3. Secondly, the competition combination with H+ between the weak acid anions and NO2 − can increase the concentration of NO2 − and thus boosts the disproportionation reaction between NH4 + and NO2 − to produce nitrogen.
format	article
author	Zidan Wang Sohaib Hameed Yaoyao Wen Nuowei Zhang Hengjun Gai Jinbao Zheng Bing H. Chen
author_facet	Zidan Wang Sohaib Hameed Yaoyao Wen Nuowei Zhang Hengjun Gai Jinbao Zheng Bing H. Chen
author_sort	Zidan Wang
title	The effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen
title_short	The effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen
title_full	The effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen
title_fullStr	The effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen
title_full_unstemmed	The effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen
title_sort	effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/945826c2773a43c289c14892e4062399
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The effect of weak acid anions on the selective catalytic wet air oxidation of aqueous ammonia to nitrogen

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