Fenton-like oxidation of refractory organic contaminants in wastewater using pyrite cinder at neutral pH
|更新时间:2025-12-10
|
Fenton-like oxidation of refractory organic contaminants in wastewater using pyrite cinder at neutral pH
CIESC JournalIssue 4, Pages: 1001-1008(2010)
作者机构:
同济大学环境科学与工程学院,污染控制与资源化研究国家重点实验室,上海,200092
作者简介:
基金信息:
DOI:
CLC:
Online First:05 April 2010,
Published:05 April 2010
稿件说明:
移动端阅览
WU Deli, DUAN Dong, MA Luming. Fenton-like oxidation of refractory organic contaminants in wastewater using pyrite cinder at neutral pH[J]. CIESC Journal, 2010, (4): 1001-1008.
DOI:
WU Deli, DUAN Dong, MA Luming. Fenton-like oxidation of refractory organic contaminants in wastewater using pyrite cinder at neutral pH[J]. CIESC Journal, 2010, (4): 1001-1008.DOI:
Fenton-like oxidation of refractory organic contaminants in wastewater using pyrite cinder at neutral pH
Traditional Fenton oxidation process uses ferrous iron (Fe2+) as catalyst.Fenton-like reactions using iron minerals as heterogeneous catalysts has caught attention recently.However,Fenton-like reaction using pyrite cinder as catalyst was not reported in early research.The catalytic activity of pyrite cinder for pollutants oxidation was evaluated by using Acid Red B,phenol and industrial wastewater as model organic contaminants.The effect of catalyst and H2O2 dosage,initial pH,reaction time,reusability of catalyst on the oxidation was investigated.When the concentration of pyrite cinder and H2O2 dosage were 10 g·L-1 and 20 ml·L-1 respectively,the removal efficiencies of Acid Red B and phenol were almost 100% in a broad range of pH value from 1 to 11.Obvious decolorization of industrial wastewater was observed within 6 h,and the ratio of BOD5/COD increased greatly.The results indicated that unlike traditional Fenton reagent,the reaction of pyrite cinder with H2O2 could effectively catalyze the oxidation of organic contaminants at circumneutral pH.This process avoids the initial acidification.In addition,pyrite cinder exhibited higher activity than other pure iron oxide minerals.The catalyst could be easily recovered by sedimentation or filtration for further use.