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题名: Influence of solution chemistry on heavy metals removal by bioadsorbent tea waste modified by poly (vinyl alcohol)
作者: Zhang, Y; Li, XL; Li, YF(李彦锋)
收录类别: SCIE
出版日期: 2015-02-20
刊名: DESALINATION AND WATER TREATMENT
卷号: 53, 期号:8, 页码:2134-2143
英文摘要: In this study, the macroporous spherical composite biomaterials, Poly(vinyl alcohol)/teawaste (PVA/TW), were prepared and investigated for their potential to remove Pb2+, Hg2+, and Cu2+ from aqueous solution. Investigations showed that adsorption capacity of Hg2+ by PVA/TW bead was much higher than that of Pb2+ and Cu2+, while adsorption rate of Pb2+ was fastest. The experimental data obtained for Pb2+-PVA/TW, Hg2+-PVA/TW, and Cu2+-PVA/TW at different solution temperatures indicate a monolayer type biosorption, which explains why the Langmuir isotherm accurately represents the experimental data obtained in this study. The Langmuir maximum biosorption capacities of Pb2+, Hg2+, and Cu2+ onto PVA/TW were 81.56, 175.68, and 49.08mg/g at 298K, respectively, which is comparatively superior to most other low-cost biomaterials. Fourier transform infrared spectroscopic analysis of the metal-loaded biosorbents confirmed the participation of -COOH, -NH2, and O-CH3 groups in the complexation of Pb2+, Hg2+, and Cu2+. Thermodynamic parameters demonstrated that the biosorption of Pb2+ onto PVA/TW was endothermic, spontaneous, and feasible at 288-318K. The results evidently indicated that PVA/TW would be suitable biosorbents for Pb2+, Hg2+, and Cu2+ in wastewater under certain conditions.
关键词: Polymer PVA ; Tea waste ; Adsorption mechanism ; Heavy metals
作者部门: [Zhang, Yun ; Li, Yanfeng] Lanzhou Univ, Inst Biochem Engn & Environm Technol, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China ; [Li, Xiaoli] Lanzhou Univ, Coll Resources & Environm, Lanzhou 730000, Peoples R China
通讯作者: Zhang, Y (reprint author), Lanzhou Univ, Inst Biochem Engn & Environm Technol, Coll Chem & Chem Engn, 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 [21304040] ; Fundamental Research Funds for the Central Universities [lzujbky-2012-80] ; Chinese Postdoctoral Funds [2013M532090]
所属项目名称: 国家自然科学基金项目 ; 中国博士后科学基金 ; 中央高校基本科研业务费专项资金
项目资助者: NSFC ; CPSF ; LZU
语种: 英语
DOI: 10.1080/19443994.2013.861775
ISSN号: 1944-3994
WOS记录号: WOS:000349000700013
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/126416
Appears in Collections:化学化工学院_期刊论文

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Recommended Citation:
Zhang, Y,Li, XL,Li, YF. Influence of solution chemistry on heavy metals removal by bioadsorbent tea waste modified by poly (vinyl alcohol)[J]. DESALINATION AND WATER TREATMENT,2015,53(8):2134-2143.
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