Developing goethite modified reed-straw biochar for remediation of metal (loids) co-contamination
文献类型：期刊论文
| 作者 | Feng, Hanxiao1,2; Yang, Fen2; Wei, Chaoyang2 |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2024-07-05 |
| 卷号 | 692页码:133942 |
| 关键词 | Goethite Modified biochar Cadmium Arsenate Adsorption mechanism Water and soil |
| DOI | 10.1016/j.colsurfa.2024.133942 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Arsenic and cadmium contamination, along with their associated environmental risks, is a global concern, and the synergistic stabilization of cations and oxyanions in contaminated environments is challenging. In this study, goethite-modified biochar (BC-Gt) was synthesized and investigated for its remediation potential in cocontamination of cadmium (Cd) and arsenic (As), compared to pristine reed-straw biochar (BC) and goethite (Gt). BC-Gt exhibited the highest maximum adsorption capacities in the binary As and Cd solution (As: 126.02 mg.g(-1), Cd: 125.12 mg.g(-1)). BET-SSA, SEM-EDS, XRD, FTIR and XPS analyses revealed various mechanisms of co-adsorption of As and Cd on BC-Gt, including ion exchange, electrostatic interaction, surface precipitation and complexation. Moreover, the specific adsorption of Cd(II) involved cation-pi interaction, while limited oxidation-reduction of As(V) occurred during adsorption. BC-Gt also displayed profound stabilization effects in As, Cd and lead (Pb) co-contaminated soils, with maximum removal efficiencies of 63.98 %, 83.67 % and 83.92 %, respectively. BC-Gt outperformed BC and Gt in transforming the exchangeable fraction (Exc) into reducible (Red), oxidizable (Oxi) and residual (Res) fractions of As, Cd and Pb. This study provides evidence in the potential of BC-Gt for remediating co-contamination of As and Cd in water, as well as As, Cd and Pb in soil. |
| WOS关键词 | AQUEOUS-SOLUTION ; ADSORPTION ; REMOVAL ; AS(III) ; CADMIUM ; CD(II) ; IONS ; IRON ; SOIL ; ENVIRONMENT |
| WOS研究方向 | Chemistry |
| WOS记录号 | WOS:001230210900001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/205285]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Yang, Fen; Wei, Chaoyang |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Hanxiao,Yang, Fen,Wei, Chaoyang. Developing goethite modified reed-straw biochar for remediation of metal (loids) co-contamination[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2024,692:133942. |
| APA | Feng, Hanxiao,Yang, Fen,&Wei, Chaoyang.(2024).Developing goethite modified reed-straw biochar for remediation of metal (loids) co-contamination.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,692,133942. |
| MLA | Feng, Hanxiao,et al."Developing goethite modified reed-straw biochar for remediation of metal (loids) co-contamination".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 692(2024):133942. |
入库方式： OAI收割
来源：地理科学与资源研究所
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