Temperature effects on arsenate adsorption onto goethite and its preliminary application to arsenate removal from simulative geothermal water | |
Hao, Linli ; Ouyang, Tong ; Lai, Limin ; Liu, Yao-Xing ; Chen, Shanshan ; Hu, Hongyou ; Chang, Chang-Tang ; Wang, Juan-Juan ; Ou YT(欧阳通) | |
刊名 | http://dx.doi.org/10.1039/c4ra08318k
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2014 | |
关键词 | Adsorption Experiments Iron compounds |
英文摘要 | Laboratory batch experiments were conducted in order to assess the impacts of temperature on the performance of goethite in removing arsenate from water. All batch experiments were conducted at four temperatures (30, 50, 70 and 90 °C) and pH 4.6. The results showed that both the arsenic uptake rate and capacity were significantly enhanced with increasing temperature from 30 to 90 °C. The adsorption kinetics followed a pseudo-second-order model with coefficients of determination (R2) all above 0.999. The process followed the Langmuir model, and several thermodynamic parameters were calculated. Arsenate adsorption was facilitated more under simulative geothermal water conditions than in RO (reverse osmosis) water. The crystalline structure of goethite was not changed after adsorption at various temperatures. XPS results showed a decrease in the content of iron hydroxyl groups, which demonstrated that arsenate adsorption onto goethite may be realised through the replacement of the iron hydroxyl group to form inner-sphere bidentate/monodentate complexes at pH 4.6. This journal is ? the Partner Organisations 2014. |
语种 | 英语 |
出版者 | Royal Society of Chemistry |
内容类型 | 期刊论文 |
源URL | [http://dspace.xmu.edu.cn/handle/2288/88283] ![]() |
专题 | 海洋环境-已发表论文 |
推荐引用方式 GB/T 7714 | Hao, Linli,Ouyang, Tong,Lai, Limin,et al. Temperature effects on arsenate adsorption onto goethite and its preliminary application to arsenate removal from simulative geothermal water[J]. http://dx.doi.org/10.1039/c4ra08318k,2014. |
APA | Hao, Linli.,Ouyang, Tong.,Lai, Limin.,Liu, Yao-Xing.,Chen, Shanshan.,...&欧阳通.(2014).Temperature effects on arsenate adsorption onto goethite and its preliminary application to arsenate removal from simulative geothermal water.http://dx.doi.org/10.1039/c4ra08318k. |
MLA | Hao, Linli,et al."Temperature effects on arsenate adsorption onto goethite and its preliminary application to arsenate removal from simulative geothermal water".http://dx.doi.org/10.1039/c4ra08318k (2014). |
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