干旱区生态环境知识资源中心(Arid): Arsenic and nitrate remediation by isolated FeOB strains coupled with additional ferrous iron in the iron-deficient arid soils

Arid

DOI	10.1016/j.scitotenv.2022.154057
	Arsenic and nitrate remediation by isolated FeOB strains coupled with additional ferrous iron in the iron-deficient arid soils
	Ning, Xiang; Wang, Shengli; Zhao, Baojin; Long, Song; Wang, Yuqing; Nan, Zhongren
通讯作者	Wang, SL
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	825
英文摘要	Remediation of As(III) by use of Fe(II) oxidation bacteria (FeOB) in iron-rich soils has been reported, but seldom used in the iron-deficient soil of arid areas. This study was aimed at selecting native bacterial strains to remediate As pollution in arid soils, coupled with the addition of Fe(II). The used methods included: The selection of two FeOB strains; XRD for solid phase identification based on peaks; SEM with EDS for morphology identification of newly formed minerals with chemical compositions; XPS for surface chemistry of the minerals; FTIR for functional groups of precipitates and 3DEEM for EPS determination, etc. The results were as follows: Sharp decrement curves of As(III) and NO3- with Fe(II) and total Fe contents and increment of NO2-; NH4+ fluctuating during the experimental period of 11 days; and precipitation of Fe(III) hydroxides together with As(III) with broken FeOBs due to encrustation in the SEM scan. It was concluded that two selected Pseudomonas strains have NAFO functionality by addition of iron as iron reduction-oxidation pair in the arid soil, further potentially fixing NH4+ while As(III) can be effectively remediated through the FeOB participation in forms of adsorption and co-precipitation of Fe(OH)(3) through an oxidation of Fe(II) process.
英文关键词	Arsenic remediation Nitrate reduction Iron reduction and oxidation FeOB strain Extracellular polymeric substances
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000800391300004
WOS关键词	EXTRACELLULAR POLYMERIC SUBSTANCES ; FE(II) OXIDATION ; CELL ENCRUSTATION ; AS(III) OXIDATION ; MINERAL FORMATION ; RISK-ASSESSMENT ; DNRA BACTERIA ; LOESS PLATEAU ; ADSORPTION ; REDUCTION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394357
推荐引用方式 GB/T 7714	Ning, Xiang,Wang, Shengli,Zhao, Baojin,et al. Arsenic and nitrate remediation by isolated FeOB strains coupled with additional ferrous iron in the iron-deficient arid soils[J],2022,825.
APA	Ning, Xiang,Wang, Shengli,Zhao, Baojin,Long, Song,Wang, Yuqing,&Nan, Zhongren.(2022).Arsenic and nitrate remediation by isolated FeOB strains coupled with additional ferrous iron in the iron-deficient arid soils.SCIENCE OF THE TOTAL ENVIRONMENT,825.
MLA	Ning, Xiang,et al."Arsenic and nitrate remediation by isolated FeOB strains coupled with additional ferrous iron in the iron-deficient arid soils".SCIENCE OF THE TOTAL ENVIRONMENT 825(2022).