中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 武汉岩土力学研究所
  3. 中科院武汉岩土力学所
Red mud-based Fe/C nanostructured materials for multi-interface remediation of Cr(vi)-contaminated soil and stabilization

文献类型：期刊论文

作者Cao, Shiyu3,4; Li, Jiangshan3,4; Nie, Jing2,3,4; Shi, Yanbiao1; Dong, Jiaqi2,3,4; Zhang, Lizhi1; Xue, Qiang3,4
刊名ENVIRONMENTAL SCIENCE-NANO
出版日期2024-12-26
页码10
ISSN号2051-8153
DOI10.1039/d4en01087f
英文摘要The stabilization remediation performance of Cr(vi)-contaminated soil hinges on the remediation behaviors at soil-Cr(vi)-stabilizer multiple interfaces. Fe/C nanostructured materials featuring high chemical affinity, quick electron transfer and tunable active sites might tackle the problems of substance transport and structure evolution across multiple interfaces. Herein, we report that the co-pyrolysis of red mud and straw, two abundant solid wastes, can realize the scaled-up synthesis of biochar-supported nanoscale zero-valent iron (nZVI/BC). At an initial Cr(vi) concentration of 1000.00 mg kg-1 and stabilizer dosage of 10%, the optimal nZVI/BC converted the Cr(vi)-contaminated soil into non-hazardous waste, with toxicity characteristic leaching procedure (TCLP) leaching concentrations of 3.13 mg L-1 Cr(vi) and 11.26 mg L-1 Cr(T). Experimental and theoretical results revealed that nZVI/BC altered the species evolution at the multiple interfaces of nZVI/BC-Cr(vi)-soil, where the acid-soluble Cr in soil shifted into stable residual Cr owing to the microscopically increased bidentate-binuclear inner-sphere coordination modes and the reduction process over the nZVI/BC surface. Meanwhile, the released iron species from nZVI/BC was immobilized on the soil surface, thereby regulating organic matter adsorption to recover soil agglomeration. Therefore, this study presents the feasibility of obtaining Fe/C nanostructured materials by one-step upgrading agricultural and industrial waste into eco-friendly stabilizers for remediating Cr(vi)-contaminated soils.
资助项目National Natural Science Foundation of China[52400195] ; National Natural Science Foundation of China[42177163] ; National Natural Science Foundation of China[22306119] ; National Natural Science Foundation of China[2023YFC3707801] ; National Key Research and Development Program of China[YJ202460] ; Fundamental Research Funds for the Central Universities
WOS研究方向Chemistry ; Environmental Sciences & Ecology ; Science & Technology - Other Topics
语种英语
WOS记录号WOS:001392029000001
出版者ROYAL SOC CHEMISTRY
源URL[http://119.78.100.198/handle/2S6PX9GI/37755]  
专题中科院武汉岩土力学所
通讯作者Li, Jiangshan
作者单位1.Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.IRSM CAS HK PolyU Joint Lab Solid Waste Sci, Wuhan 430071, Peoples R China
4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式
GB/T 7714		 Cao, Shiyu,Li, Jiangshan,Nie, Jing,et al. Red mud-based Fe/C nanostructured materials for multi-interface remediation of Cr(vi)-contaminated soil and stabilization[J]. ENVIRONMENTAL SCIENCE-NANO,2024:10.
APA Cao, Shiyu.,Li, Jiangshan.,Nie, Jing.,Shi, Yanbiao.,Dong, Jiaqi.,...&Xue, Qiang.(2024).Red mud-based Fe/C nanostructured materials for multi-interface remediation of Cr(vi)-contaminated soil and stabilization.ENVIRONMENTAL SCIENCE-NANO,10.
MLA Cao, Shiyu,et al."Red mud-based Fe/C nanostructured materials for multi-interface remediation of Cr(vi)-contaminated soil and stabilization".ENVIRONMENTAL SCIENCE-NANO (2024):10.

入库方式： OAI收割

来源：武汉岩土力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。