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DOI	10.5194/acp-20-4987-2020
	Biodegradation of phenol and catechol in cloud water: Comparison to chemical oxidation in the atmospheric multiphase system
	Jaber S.; Lallement A.; Sancelme M.; Leremboure M.; Mailhot G.; Ervens B.; Delort A.-M.
发表日期	2020
ISSN	1680-7316
起始页码	4987
结束页码	4997
卷号	20 期号:8
英文摘要	The sinks of hydrocarbons in the atmosphere are usually described by oxidation reactions in the gas and aqueous (cloud) phases. Previous lab studies suggest that in addition to chemical processes, biodegradation by bacteria might also contribute to the loss of organics in clouds; however, due to the lack of comprehensive data sets on such biodegradation processes, they are not commonly included in atmospheric models. In the current study, we measured the biodegradation rates of phenol and catechol, which are known pollutants, by one of the most active strains selected during our previous screening in clouds (Rhodococcus enclensis). For catechol, biodegradation is about 10 times faster than for phenol. The experimentally derived biodegradation rates are included in a multiphase box model to compare the chemical loss rates of phenol and catechol in both the gas and aqueous phases to their biodegradation rate in the aqueous phase under atmospheric conditions. Model results show that the degradation rates in the aqueous phase by chemical and biological processes for both compounds are similar to each other. During day time, biodegradation of catechol is even predicted to exceed the chemical activity in the aqueous phase and to represent a significant sink (17 %) of total catechol in the atmospheric multiphase system. In general, our results suggest that atmospheric multiphase models may be incomplete for highly soluble organics as biodegradation may represent an unrecognized efficient loss of such organics in cloud water. © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	atmospheric chemistry; atmospheric modeling; biodegradation; cloud water; comparative study; experimental study; organic compound; oxidation; phenol; pollutant; Rhodococcus
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141381
作者单位	Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, CNRS, SIGMA Clermont, Clermont-Ferrand, 63000, France
推荐引用方式 GB/T 7714	Jaber S.,Lallement A.,Sancelme M.,et al. Biodegradation of phenol and catechol in cloud water: Comparison to chemical oxidation in the atmospheric multiphase system[J],2020,20(8).
APA	Jaber S..,Lallement A..,Sancelme M..,Leremboure M..,Mailhot G..,...&Delort A.-M..(2020).Biodegradation of phenol and catechol in cloud water: Comparison to chemical oxidation in the atmospheric multiphase system.Atmospheric Chemistry and Physics,20(8).
MLA	Jaber S.,et al."Biodegradation of phenol and catechol in cloud water: Comparison to chemical oxidation in the atmospheric multiphase system".Atmospheric Chemistry and Physics 20.8(2020).