Fe(II) bio-oxidation mediates red mud transformations to form Fe(III)/Al (hydr)oxide adsorbent for efficient As(V) removal under acidic conditions

doi:10.1016/j.cej.2022.135753

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋腐蚀与防护研究发展中心

	Fe(II) bio-oxidation mediates red mud transformations to form Fe(III)/Al (hydr)oxide adsorbent for efficient As(V) removal under acidic conditions
	Zhang, Duo-Rui 2; Chen, Hong-Rui 2; Zhao, Xiao-Juan 3; Xia, Jin-Lan 2; Nie, Zhen-yuan 2; Zhang, Rui-yong 5,6; Shu, Wen-Sheng 4; Pakostova, Eva 1
刊名	CHEMICAL ENGINEERING JOURNAL
	2022-07-01
卷号	439 页码:14
关键词	Arsenic removal Iron oxidation Red mud Fe(III) Al (hydr)oxides Iron speciation transformation
ISSN号	1385-8947
DOI	10.1016/j.cej.2022.135753
通讯作者	Xia, Jin-Lan(jlxia@csu.edu.cn)
英文摘要	Acidic wastewater rich in arsenic (As) is one of the most hazardous types of liquid waste and has caused severe environmental pollution over the past few decades due to a lack of cost-effective and environment-friendly disposal technologies. Here, a new strategy for the efficient immobilization of As(V) under acidic conditions is presented. The approach uses Fe(II) bio-oxidation by the acidophilic bacterium Sulfobacillus (Sb.) thermosulfidooxidans to transform red mud into a low-cost Fe(III)/Al (hydr)oxide adsorbent for As(V) removal. The mechanisms of the formation of the adsorbent and subsequent adsorption of As onto its surface were investigated, together with the relationship between the adsorbent structure and As adsorption efficiency. The [Fe (II)]ini greatly affected the growth of Sb. thermosulfidooxidans, Fe/Al speciation, and surface structure of the adsorbent, as well as the As removal capacity. The aluminosilicates in RM provided numerous sites for Fe(III) adsorption, inhibiting the transformation of amorphous Fe(III) (hydr)oxides to crystalline Fe(III) minerals. The newly formed Fe(OH)(3) and schwertmannite played a dominant role in As(V) immobilization. The transformation of the amorphous Fe(III) (hydr)oxides to more crystalline Fe(III) minerals, caused by an excess of Fe(II) (2 <= [Fe (II)]ini <= 4 g/L), resulted in a significant decrease in the As adsorption capacity (reduce ratio: 29.3-53.5%). The Fe(III)/Al (hydr)oxide adsorbent bio-synthesized under [Fe(II)]ini of 1 g/L showed the highest As(V) adsorption efficiency (89.9 mg/g; at pH 2.0), which was significantly higher than that of the original RM under the same conditions (5.7 mg/g). The adsorption process followed the pseudo-second-order kinetic and Langmuir isotherm models.
资助项目	National Natural Science of China[51861135305] ; National Natural Science of China[41830318] ; Open Funds of Beijing Synchrotron Radiation Facility[2019-BEPC-PT-003348]
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000783179900001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/178972]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Xia, Jin-Lan
作者单位	1.Coventry Univ, Ctr Sport Exercise & Life Sci, Coventry CV1 5FB, W Midlands, England 2.Cent South Univ, Sch Minerals Proc & Bioengn, Key Lab Biomet, Minist Educ China, Changsha 410083, Peoples R China 3.Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China 4.South China Normal Univ, Sch Life Sci, Guangzhou 510631, Peoples R China 5.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Duo-Rui,Chen, Hong-Rui,Zhao, Xiao-Juan,et al. Fe(II) bio-oxidation mediates red mud transformations to form Fe(III)/Al (hydr)oxide adsorbent for efficient As(V) removal under acidic conditions[J]. CHEMICAL ENGINEERING JOURNAL,2022,439:14.
APA	Zhang, Duo-Rui.,Chen, Hong-Rui.,Zhao, Xiao-Juan.,Xia, Jin-Lan.,Nie, Zhen-yuan.,...&Pakostova, Eva.(2022).Fe(II) bio-oxidation mediates red mud transformations to form Fe(III)/Al (hydr)oxide adsorbent for efficient As(V) removal under acidic conditions.CHEMICAL ENGINEERING JOURNAL,439,14.
MLA	Zhang, Duo-Rui,et al."Fe(II) bio-oxidation mediates red mud transformations to form Fe(III)/Al (hydr)oxide adsorbent for efficient As(V) removal under acidic conditions".CHEMICAL ENGINEERING JOURNAL 439(2022):14.