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题名: Facile synthesis of PVA/CNTs for enhanced adsorption of Pb2+ and Cu2+ in single and binary system
作者: Jing, LY; Li, XL
收录类别: SCIE
出版日期: 2016
刊名: DESALINATION AND WATER TREATMENT
卷号: 57, 期号:2-14, 页码:21391-21404
出版者: TAYLOR & FRANCIS
出版地: PHILADELPHIA
英文摘要: Multiwall carbon nanotubes (CNTs) were entrapped into polymer matrix by poly(vinyl alcohol) (PVA)-boric acid crosslinking. Thus, a novel macroporous composite adsorbent (PVA/CNTs) was obtained and used to remove heavy metal ions. Compared with CNTs, PVA/CNTs could effectively adsorb Pb2+ and Cu2+ from binary ion systems in the existence of HA, Zn2+, Cd2+, Ca2+, and surfactant, respectively. The results indicated that sorption of Pb2+ and Cu2+ on PVA/CNTs was strongly dependent on pH values, and independent of ionic strength. PVA/CNTs beads exhibited special selectivity for Pb2+ ions in the presence of NaCl, anionic surfactant, and coexisting ions. The kinetic sorption can be described using a pseudo-second-order model very well. Chemical reaction such as surface complexation was the main sorption mechanism. The results from the sequential adsorption-desorption cycles showed that PVA/CNTs beads exhibited good desorption and reusability. The PVA/CNTs beads were prepared by a simple way and they are easily recovered from aqueous solution and efficiently regenerated. PVA/CNTs could be a promising alternative to activated carbon for wastewater treatment.
关键词: PVA ; CNTs ; Selectivity ; Anionic surfactant ; Desorption
作者部门: [Jing, Lingyun ; Li, Xiaoli] Lanzhou Univ, Coll Resources & Environm Sci, Lanzhou 730000, Peoples R China ; [Jing, Lingyun] Lanzhou Jiaotong Univ, Coll Environm & Municipal Engn, West Anning Rd 88, Lanzhou 730000, Peoples R China
通讯作者: Li, XL (reprint author), Lanzhou Univ, Coll Resources & Environm Sci, Lanzhou 730000, Peoples R China.
学科分类: Engineering; Water Resources
文章类型: Article
所属项目编号: National Natural Science Foundation of China [21407071] ; Fundamental Research Funds for the Central Universities [lzujbky-2014-123]
所属项目名称: 国家自然科学基金项目 ; 中央高校基本科研业务费专项资金
项目资助者: NSFC ; LZU
语种: 英语
DOI: 10.1080/19443994.2015.1119739
ISSN号: 1944-3994
WOS记录号: WOS:000383400800022
IR记录号: WOS:000383400800022
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/189455
Appears in Collections:资源环境学院_期刊论文

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Recommended Citation:
Jing, LY,Li, XL. Facile synthesis of PVA/CNTs for enhanced adsorption of Pb2+ and Cu2+ in single and binary system[J]. DESALINATION AND WATER TREATMENT,2016,57(2-14):21391-21404.
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