Removal of dimethylarsinate from water by robust NU-1000 aerogels: Impact of the aerogel materials

被引：15
作者：
Fan, Yuying [1 ,2 ]
Liang, He [3 ]
Jian, Meipeng [4 ]
Liu, Ruiping [2 ,3 ]
Zhang, Xiwang [5 ]
Hu, Chengzhi [2 ]
Liu, Huijuan [3 ]
机构：
[1] Northeast Normal Univ, Sch Environm, Changchun 130117, Peoples R China
[2] Chinese Acad Sci, Res Ctr Eco Environm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
[3] Tsinghua Univ, Ctr Water & Ecol, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Cont, Beijing 100084, Peoples R China
[4] Beijing Univ Civil Engn & Architecture, Sch Environm & Energy Engn, Beijing 100044, Peoples R China
[5] Univ Queensland, UQ Dow Ctr Sustainable Engn Innovat, Sch Chem Engn, St Lucia, Qld 4072, Australia
来源：
CHEMICAL ENGINEERING JOURNAL | 2023年 / 455卷
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Hybrid aerogels; Zr-MOF; Green matrix; Adsorption; Dimethylarsinate; METAL-ORGANIC-FRAMEWORK; ADSORPTIVE REMOVAL; PHOSPHATE; ETHER; OXIDE; DECONTAMINATION; GROUNDWATER; STRATEGY;
D O I：
10.1016/j.cej.2022.140387
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study compared the effect of three matrices on the dimethylarsinate (DMA) removal from water to NU-1000 (zirconium-based metal-organic framework, Zr-MOF) hybrid aerogels. The porous MOF hybrid aerogels were prepared by grafting NU-1000 into green matrices, i.e., agarose (AG), sodium alginate (SA), and carboxymethyl cellulose (CMC) sodium salt. The adsorption data of DMA can be well described by the pseudo-second-order kinetic model and the Freundlich isotherm model. The maximum adsorption capacity of the NU-1000@AG hybrid aerogel for DMA (119.63 mg/g) was higher than the other two hybrid aerogels due to the negligible interference of AG on the active adsorption sites in NU-1000. However, the functional groups in NU-1000@CMC hybrid aerogel and NU-1000@SA hybrid aerogel occupied the Zr adsorption sites during the cross-linked process and decreased their adsorption capacities. The NU-1000@AG hybrid aerogel demonstrated application potential for removing DMA in a fixed-column dynamic adsorption process. Furthermore, the NU-1000 hybrid aerogels exhibited excellent regeneration performance and ease of solid-liquid separation. The characteristics of various matrices may offer diversified facile and viable strategies for fabricating a blocky adsorbent with superior sta-bility and solid-liquid separation efficiency for water treatment, overcoming the disadvantages of MOF powder and ensuring maximum effectiveness of adsorbent components.
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页数：11
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