globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2017.12.067
Scopus记录号: 2-s2.0-85039770617
论文题名:
Efficient heavy metal removal from industrial melting effluent using fixed-bed process based on porous hydrogel adsorbents
作者: Zhou G.; Luo J.; Liu C.; Chu L.; Crittenden J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 131
起始页码: 246
结束页码: 254
语种: 英语
英文关键词: Fixed-bed process ; Gel adsorbent ; Heavy metals ; Melting wastewater
Scopus关键词: Adsorbents ; Adsorption ; Cadmium ; Effluents ; Free radical polymerization ; Free radicals ; Heavy metals ; Hydrogels ; Lead ; Lead removal (water treatment) ; Manganese ; Manganese removal (water treatment) ; Melting ; Metal ions ; Metals ; Reusability ; Solutions ; Wastewater treatment ; Adsorption equilibria ; Adsorption kinetics ; Adsorption process ; Fixed-bed process ; Heavy metal removal ; High adsorption capacity ; Removal efficiencies ; Treatment volumes ; Chemicals removal (water treatment) ; acrylic acid ; cadmium ; cellulose ; copper ion ; lead ; manganese ; polyacrylic acid ; zinc ion ; adsorption ; concentration (composition) ; experimental study ; heavy metal ; melting ; permeability ; pollutant removal ; polymerization ; wastewater ; water column ; water treatment ; adsorption ; adsorption kinetics ; Article ; covalent bond ; cross linking ; degradation ; desorption ; effluent ; enthalpy ; entropy ; freeze drying ; heavy metal removal ; hydrogel ; infrared spectroscopy ; melting point ; pH ; polymerization ; porosity ; precipitation ; priority journal ; sludge ; surface property ; temperature sensitivity ; thermostability ; water permeability ; Corchorus capsularis
英文摘要: High adsorption capacity, fast adsorption kinetics, good reusability and low cost are highly demanded for adsorbents used in practical adsorption process. In this study, a porous double network Jute/Polyacrylic acid (Jute/PAA) gel was prepared using simple free-radical polymerization of acrylic acid in Jute aqueous solution. The high permeability of Jute/PAA hydrogel with about 80 wt% water made internal adsorption sites fully expose to metal ions. The Jute/PAA gel adsorbent could efficiently adsorb heavy metals in melting wastewater, especially Cd2+ and Pb2+. The adsorbent showed very high adsorption capacities of 401.7 mg/g for Cd2+ and 542.9 mg/g for Pb2+. Moreover, the adsorption equilibrium reached within only 10 min for 40 mg/L of Cd2+ and Pb2+ using 1 g/L adsorbent. Meanwhile, the removal efficiencies reached 81.0% for Pb (C0 = 3.825 mg/L), 79.3% for Cd (C0 = 6.075 mg/L), 83.4% for Cu (C0 = 9.325 mg/L), 29.8% for Zn (C0 = 188.6 mg/L), 22.3% for Mn (C0 = 17.05 mg/L), 96.2% for Cr (C0 = 0.25 mg/L) and 99.8% for Fe (C0 = 9.75 mg/L) in melting wastewater using 1 g/L adsorbent in 2 h. In particular, the concentrations of Pb, Cd and Cr decreased below 0.001 mg/L using 4 g/L adsorbent. In the fixed-bed column experiments, the treatment volume of melting wastewater reached 2900 BV (32.8 L) only producing 50 BV (565 mL) eluent. This work develops a highly practical adsorption process based on hydrogel adsorbents for the removal of heavy metals in actual wastewater. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113006
Appears in Collections:气候减缓与适应

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作者单位: State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, China; Brook Byers Institute for Sustainable Systems and School of Civil and Environmental Engineering, Georgia Institute of Technology, 828 West Peachtree Street, Atlanta, GA 30332, United States; College of Life Science and Chemistry, Hunan University of Technology, Hunan, 412007, China

Recommended Citation:
Zhou G.,Luo J.,Liu C.,et al. Efficient heavy metal removal from industrial melting effluent using fixed-bed process based on porous hydrogel adsorbents[J]. Water Research,2018-01-01,131
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