TY - JOUR
T1 - Transformation characteristics of organic pollutants in Fered-Fenton process for dry-spun acrylic fiber wastewater treatment
AU - Wei, Jian
AU - Song, Yonghui
AU - Meng, Xiaoguang
AU - Tu, Xiang
AU - Pic, Jean Stéphane
N1 - Publisher Copyright:
© IWA Publishing 2014
PY - 2014
Y1 - 2014
N2 - The Fered-Fenton process using Ti sheet as cathode and RuO2/Ti as anode was employed for the pretreatment of dry-spun acrylic fiber manufacturing wastewater. The effects of feeding mode and concentration of H2O2 on chemical oxygen demand (COD) removal efficiency as well as the biodegradability variation during the Fered-Fenton process were investigated. The feeding mode of H2O2 had significant influence on COD removal efficiency: the removal efficiency was 44.8% if all the 60.0 mM H2O2 was fed at once, while it could reach 54.1% if the total H2O2 was divided into six portions and fed six times. The biochemical oxygen demand/COD ratio increased from 0.29 to above 0.68 after 180 min treatment. The transformation characteristics of organic pollutants during the Fered-Fenton process were evaluated by using gas chromatography-mass spectrometry (GC-MS), Fourier transform infrared spectroscopy (FTIR) and fluorescence excitation-emission matrix (EEM) spectroscopy. Most of the refractory organic pollutants with aromatic structure or large molecular weight were decomposed during the Fered-Fenton process.
AB - The Fered-Fenton process using Ti sheet as cathode and RuO2/Ti as anode was employed for the pretreatment of dry-spun acrylic fiber manufacturing wastewater. The effects of feeding mode and concentration of H2O2 on chemical oxygen demand (COD) removal efficiency as well as the biodegradability variation during the Fered-Fenton process were investigated. The feeding mode of H2O2 had significant influence on COD removal efficiency: the removal efficiency was 44.8% if all the 60.0 mM H2O2 was fed at once, while it could reach 54.1% if the total H2O2 was divided into six portions and fed six times. The biochemical oxygen demand/COD ratio increased from 0.29 to above 0.68 after 180 min treatment. The transformation characteristics of organic pollutants during the Fered-Fenton process were evaluated by using gas chromatography-mass spectrometry (GC-MS), Fourier transform infrared spectroscopy (FTIR) and fluorescence excitation-emission matrix (EEM) spectroscopy. Most of the refractory organic pollutants with aromatic structure or large molecular weight were decomposed during the Fered-Fenton process.
KW - Dry-spun acrylic fiber wastewater
KW - EEM
KW - FTIR
KW - Fered-Fenton
KW - GC-MS
UR - http://www.scopus.com/inward/record.url?scp=84919800779&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84919800779&partnerID=8YFLogxK
U2 - 10.2166/wst.2014.441
DO - 10.2166/wst.2014.441
M3 - Article
C2 - 25521133
AN - SCOPUS:84919800779
SN - 0273-1223
VL - 70
SP - 1976
EP - 1982
JO - Water Science and Technology
JF - Water Science and Technology
IS - 12
ER -