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Author:

Han, Yanhe (Han, Yanhe.) | Zhang, Sitao (Zhang, Sitao.) | Zhang, Xiaofei (Zhang, Xiaofei.) | Chen, Jiaqing (Chen, Jiaqing.)

Indexed by:

Scopus SCIE

Abstract:

Polymer flooding produced water is a taxonomic group of refractory wastewaters with a high viscosity and molecular weight. The discharge of water that contains hydrolyzed polyacrylamide (HPAM) into the environment will result in many environmental problems. The use of the electro-oxidation (EO) method for the degradation of wastewater is characterized by many advantages, including high efficiency, wide applicability, simplicity, and easy operation. In this study, HPAM was degraded using Ti/SnO2-Sb2O3/beta-PbO2 anodes. The physicochemical properties of the electrodes were characterized via scanning electron microscopy (SEM) and X-ray diffraction ()(RD). HPAM degradation experiments were carried out at current densities of 10-40 mA/cm(2), electrode distances of 1-5 cm, initial solution pH values of 3-7, and electrolyte concentrations of 2000-10000 mg/L. The degradation kinetics studies showed that the HPAM degraded by the EO process followed a pseudo-first-order kinetic model under various conditions. Under the optimal conditions, namely a current density of 20 mA/cm(2), electrode distance of 1 cm, initial pH of 5, and electrolyte concentration of 6000 mg/L, the efficiency of the electrochemical degradation of HPAM attained 100%. Finally, the degradation mechanism and products of HPAM were determined via monitoring ion chromatography (IC), three-dimensional excitation emission matrix (3D EEM) fluorescence spectra, Fourier transform infrared spectroscopy (FT-IR), the total organic carbon (TOC), and gas chromatography/mass spectrometry (GC/MS).

Keyword:

kinetics HPAM Electro-oxidation mechanism

Author Community:

  • [ 1 ] [Han, Yanhe]CNPC Res Inst Safety & Environm Technol, State Key Lab Petr Pollut Control, Beijing 100007, Peoples R China
  • [ 2 ] [Zhang, Sitao]CNPC Res Inst Safety & Environm Technol, State Key Lab Petr Pollut Control, Beijing 100007, Peoples R China
  • [ 3 ] [Zhang, Xiaofei]CNPC Res Inst Safety & Environm Technol, State Key Lab Petr Pollut Control, Beijing 100007, Peoples R China
  • [ 4 ] [Han, Yanhe]Beijing Inst Petrochem Technol, Dept Environm Engn, Beijing 102617, Peoples R China
  • [ 5 ] [Zhang, Sitao]Beijing Inst Petrochem Technol, Dept Environm Engn, Beijing 102617, Peoples R China
  • [ 6 ] [Chen, Jiaqing]Beijing Inst Petrochem Technol, Dept Environm Engn, Beijing 102617, Peoples R China
  • [ 7 ] [Zhang, Sitao]Beijing Univ Technol, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Han, Yanhe]CNPC Res Inst Safety & Environm Technol, State Key Lab Petr Pollut Control, Beijing 100007, Peoples R China;;[Han, Yanhe]Beijing Inst Petrochem Technol, Dept Environm Engn, Beijing 102617, Peoples R China;;[Chen, Jiaqing]Beijing Inst Petrochem Technol, Dept Environm Engn, Beijing 102617, Peoples R China

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Source :

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

ISSN: 1452-3981

Year: 2020

Issue: 4

Volume: 15

Page: 3382-3399

1 . 5 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:139

Cited Count:

WoS CC Cited Count: 12

SCOPUS Cited Count: 12

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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