文献类型：期刊文献

英文题名：Synthesis of ultralight phosphorylated carbon aerogel for efficient removal of U(VI): Batch and fixed-bed column studies

作者：Zhang, Zhibin[1,2,3];Dong, Zhimin[1];Wang, Xiangxue[3];Dai, Ying[1];Cao, Xiaohong[1];Wang, Youqun[1];Hua, Rong[1];Feng, Haitao[1];Chen, Jianrong[4];Liu, Yunhai[1];Hu, Baowei[5];Wang, Xiangke[1,3]

机构：[1]East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China;[2]East China Univ Technol, Minist Educ, Engn Res Ctr Nucl Technol Applicat, Nanchang 330013, Jiangxi, Peoples R China;[3]North China Elect Power Univ, Coll Environm Sci & Engn, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China;[4]Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China;[5]Shaoxing Univ, Sch Life Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China

年份：2019

卷号：370

起止页码：1376

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000467387200118)、、EI(收录号：20191406733393)、Scopus(收录号：2-s2.0-85063759915)、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (21561002, 21866004, 21866003, 21501025, 11605027, 21761002), the China Postdoctoral Science Foundation (2016M600981), the Science & Technology Support Program of Jiangxi Province (Grant NO. 2018ACB21007) and the Project of Jiangxi Provincial Department of Education (Grant Nos. GJJ160535, GJJ171515).

语种：英文

外文关键词：Carbon aerogel; Phosphate groups; Uranium; Adsorption; Interaction mechanism

外文摘要：A novel ultra-flyweight phosphorylated carbon aerogel (CA-PO4) was successfully synthesized with phosphate functionalized graphene as skeletons and CNTs as reinforcing ribs, and was applied to adsorb uranyl ions from radioactive wastewater. The characterization results confirmed abundant phosphate groups on CA-PO4 surfaces, which could bind uranyl ions selectively by electrostatic interaction and surface complexation. The maximum adsorption capacity was improved from 102.7 mg.g(-1) (CA) to 150.3(-1) mg.g (CA-PO4) at 298 K and pH 5.5. U(VI) selectivity remained over 50% in the wide pH range of 1.0-5.5 and reached maximum of 66.8% at pH 5.5. The fixed bed column experiments revealed that higher adsorption was found at higher bed height and lower flow rate. Furthermore, CA-PO4 exhibited excellent structural stability, satisfied regeneration and reusability. This paper highlighted a simple synthesis of CA-PO4 as an efficient adsorbent for effective adsorption/recovery of uranyl ions from radioactive wastewater.