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author:

Zhang, Xian (Zhang, Xian.) [1] | Lin, Jiuyang (Lin, Jiuyang.) [2] | Ye, Wenyuan (Ye, Wenyuan.) [3] | Zhou, Wei (Zhou, Wei.) [4] | Jia, Xuxiang (Jia, Xuxiang.) [5] | Zhao, Shuaifei (Zhao, Shuaifei.) [6] | Ye, Chunsong (Ye, Chunsong.) [7]

Indexed by:

EI

Abstract:

BACKGROUD: Organic contaminants in secondary reverse osmosis (SRO) concentrate pose a severe threat to the ecosystem, due to their potential toxicity. In this study, potential of coagulation/granular activated carbon (GAC) adsorption combined with UV/H2O2 and ozonation for removing organic matter from industrial secondary RO concentrate was systematically investigated. RESULTS: Coagulation with 2.0 mmol L−1 FeCl3 yielded 40% removal of dissolved organic carbon (DOC), while adsorption with 5 g L−1 GAC could boost the removal efficiency up to 78.2%. Fractionation results showed that both coagulation and GAC adsorption favored hydrophobic organics. UV/H2O2 oxidation was capable of removing 87.4% of DOC, which outperformed ozonation (58.2%). UV/H2O2 and ozonation showed similar behavior in dissolved organic matter (DOM) degradation: a portion of hydrophobic organics were first transformed into hydrophilic fractions prior to final mineralization. Conclusion: Coupling of GAC as post-treatment with a UV/H2O2 process yielded 97.9% removal of DOC and the corresponding electrical energy per order (EE/O) was decreased from 66.7 to 35.8 kWh m−3. Consequently, a simple UV/H2O2 and GAC hybrid process was proposed to be a suitable method for removing DOM from SRO concentrate. © 2018 Society of Chemical Industry. © 2018 Society of Chemical Industry

Keyword:

Activated carbon Adsorption Biogeochemistry Chemical industry Chlorine compounds Coagulation Dissolution Hydrophobicity Iron compounds Organic carbon Ozone Ozonization Reverse osmosis

Community:

  • [ 1 ] [Zhang, Xian]School of Power & Mechanical Engineering, Wuhan University, Wuhan, China
  • [ 2 ] [Lin, Jiuyang]School of Environment and Resources, Qi Shan Campus, Fuzhou University, Fuzhou, China
  • [ 3 ] [Ye, Wenyuan]Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, China
  • [ 4 ] [Zhou, Wei]School of Power & Mechanical Engineering, Wuhan University, Wuhan, China
  • [ 5 ] [Jia, Xuxiang]School of Power & Mechanical Engineering, Wuhan University, Wuhan, China
  • [ 6 ] [Zhao, Shuaifei]Faculty of Science and Engineering, Department of Environmental Sciences, Macquarie University, Sydney, Australia
  • [ 7 ] [Ye, Chunsong]School of Power & Mechanical Engineering, Wuhan University, Wuhan, China

Reprint 's Address:

  • [lin, jiuyang]school of environment and resources, qi shan campus, fuzhou university, fuzhou, china

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Source :

Journal of Chemical Technology and Biotechnology

ISSN: 0268-2575

Year: 2019

Issue: 4

Volume: 94

Page: 1091-1099

2 . 7 5

JCR@2019

2 . 8 0 0

JCR@2023

ESI HC Threshold:184

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 11

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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