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题名: Highly Efficient Co-removal of Heavy Metals in Wastewater from Chemical Oxygen Demand Testing Instrument by Cysteine-functionalized Magnetic Nanoparticles
作者: Cai Botai ; Gu Pei ; Zeng Lixi ; Zhou Ying ; Liu Qingju ; Li Xun ; Yuan Longfei ; He Yujian
关键词: Magnetic nanoparticle ; Heavy metal ; Adsorption ; Magnetic separation ; Wastewater
刊名: CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
发表日期: 2014
卷: 30, 期:3, 页:472-479
收录类别: SCI
部门归属: [Cai Botai ; Gu Pei ; Zeng Lixi ; Zhou Ying ; Liu Qingju ; Yuan Longfei ; He Yujian] Univ Chinese Acad Sci, Coll Chem & Chem Engn, Beijing 100049, Peoples R China. [He Yujian] Peking Univ, State Key Lab Nat & Biomimet Drugs, Beijing 100191, Peoples R China. [Li Xun] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China.
摘要: Wastewater discharged from chemical oxygen demand(COD) testing instrument was generally difficult to treat due to its high content of heavy metals and very low pH. In this study, a kind of cysteine-functionalized magnetic narioparticles(MNPs-Cys) was synthesized and used to treat the wastewater. The synthesized MNPs-Cys as the adsorbent for heavy metal removal from aqueous solutions were systematically investigated. The adsorption dynamic process fit the Langmuir isotherms well with a maximum adsorption capacity of 76.92 mg/g for Cu(II). The adsorbent could be easily regenerated by 0.1 mol/L HNO3, which exhibited a high adsorption performance within 10 cycles. This adsorbent, combined with a developed pretreatment approach, could make Cr(III), Hg(II) and Ag(I) in the wastewater discharged from COD testing instrument effectively removed and the removal efficiency is more than 99%. This work gave a new insight into the design and synthesis of high-performance materials for treating wastewater with heavy metals.
英文摘要: Wastewater discharged from chemical oxygen demand(COD) testing instrument was generally difficult to treat due to its high content of heavy metals and very low pH. In this study, a kind of cysteine-functionalized magnetic narioparticles(MNPs-Cys) was synthesized and used to treat the wastewater. The synthesized MNPs-Cys as the adsorbent for heavy metal removal from aqueous solutions were systematically investigated. The adsorption dynamic process fit the Langmuir isotherms well with a maximum adsorption capacity of 76.92 mg/g for Cu(II). The adsorbent could be easily regenerated by 0.1 mol/L HNO3, which exhibited a high adsorption performance within 10 cycles. This adsorbent, combined with a developed pretreatment approach, could make Cr(III), Hg(II) and Ag(I) in the wastewater discharged from COD testing instrument effectively removed and the removal efficiency is more than 99%. This work gave a new insight into the design and synthesis of high-performance materials for treating wastewater with heavy metals.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3778
Appears in Collections:中国科学院新疆理化技术研究所(2002年以前数据)_期刊论文

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Cai Botai;Gu Pei;Zeng Lixi;Zhou Ying;Liu Qingju;Li Xun;Yuan Longfei;He Yujian.Highly Efficient Co-removal of Heavy Metals in Wastewater from Chemical Oxygen Demand Testing Instrument by Cysteine-functionalized Magnetic Nanoparticles,CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,2014,30(3):472-479
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