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 Citation statistics:
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