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Arsenic Removal from Water by Iron-Modified Bamboo Charcoal
Liu, Xi1,2; Ao, Hongyi1; Xiong, Xiong1,2; Xiao, Jinguang3; Liu, Jiantong1; Liu, J.(jtliu@ihb.ac.cn)
2012-03-01
Source PublicationWATER AIR AND SOIL POLLUTION
ISSN0049-6979
Volume223Issue:3Pages:1033-1044
AbstractThe effectiveness of a novel and low-cost adsorbent, iron-modified bamboo charcoal (BC-Fe), for arsenic removal from aqueous systems was evaluated in this study. The BC-Fe was synthesized by loading iron onto bamboo charcoal via soaking in a ferric salt solution. The BC-Fe possessed a porous structure with a surface area of 277.895 m2/g. The adsorption characteristics of arsenic onto BC-Fe were further investigated at various pHs, contact times, arsenic concentrations, and adsorbent doses in batch tests. The corresponding optimum equilibrium pH ranges for As(III) and As(V) removal were 4-5 and 3-4, respectively. The equilibrium times for As(III) and As(V) adsorption were 30 and 35.5 h, respectively. The arsenic removal was strongly dependent on the initial adsorbate concentration and adsorbent dosage. The maximum arsenic removal capacities of BC-Fe under the experimental conditions were 7.237 and 19.771 mg/g for As(III) and As(V), respectively. The pseudo-second-order kinetic model and Freundlich isotherm explained the kinetic and equilibrium of both the As(III) and As(V) adsorbent processes, respectively. Based on these results, the BC-Fe developed in this study is a promising material for the treatment of arsenic-contaminated water.; The effectiveness of a novel and low-cost adsorbent, iron-modified bamboo charcoal (BC-Fe), for arsenic removal from aqueous systems was evaluated in this study. The BC-Fe was synthesized by loading iron onto bamboo charcoal via soaking in a ferric salt solution. The BC-Fe possessed a porous structure with a surface area of 277.895 m(2)/g. The adsorption characteristics of arsenic onto BC-Fe were further investigated at various pHs, contact times, arsenic concentrations, and adsorbent doses in batch tests. The corresponding optimum equilibrium pH ranges for As(III) and As(V) removal were 4-5 and 3-4, respectively. The equilibrium times for As(III) and As(V) adsorption were 30 and 35.5 h, respectively. The arsenic removal was strongly dependent on the initial adsorbate concentration and adsorbent dosage. The maximum arsenic removal capacities of BC-Fe under the experimental conditions were 7.237 and 19.771 mg/g for As(III) and As(V), respectively. The pseudo-second-order kinetic model and Freundlich isotherm explained the kinetic and equilibrium of both the As(III) and As(V) adsorbent processes, respectively. Based on these results, the BC-Fe developed in this study is a promising material for the treatment of arsenic-contaminated water.
SubtypeArticle
KeywordAdsorption Arsenate Arsenite Bamboo Charcoal Freundlich Isotherm
Department(1) Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; (2) Graduate School of Chinese Academy of Sciences, Beijing, 100039, China; (3) National Laboratory of Coal Combustion, HuaZhong University of Science and Technology, Wuhan, 430074, China
DOI10.1007/s11270-011-0921-7
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences ; Water Resources
WOS IDWOS:000303385500007
WOS KeywordGRANULAR FERRIC HYDROXIDE ; ACTIVATED CARBON ; AGRICULTURAL WASTE ; AQUEOUS-SOLUTIONS ; DRINKING-WATER ; GROUND-WATER ; ADSORPTION ; ADSORBENTS ; TEMPERATURE ; KINETICS
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Cited Times:48[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16680
Collection水环境工程研究中心_期刊论文
Corresponding AuthorLiu, J.(jtliu@ihb.ac.cn)
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Huazhong Univ Sci & Technol, Natl Lab Coal Combust, Wuhan 430074, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xi,Ao, Hongyi,Xiong, Xiong,et al. Arsenic Removal from Water by Iron-Modified Bamboo Charcoal[J]. WATER AIR AND SOIL POLLUTION,2012,223(3):1033-1044.
APA Liu, Xi,Ao, Hongyi,Xiong, Xiong,Xiao, Jinguang,Liu, Jiantong,&Liu, J..(2012).Arsenic Removal from Water by Iron-Modified Bamboo Charcoal.WATER AIR AND SOIL POLLUTION,223(3),1033-1044.
MLA Liu, Xi,et al."Arsenic Removal from Water by Iron-Modified Bamboo Charcoal".WATER AIR AND SOIL POLLUTION 223.3(2012):1033-1044.
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