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Ultrasound enhanced heterogeneous activation of peroxymonosulfate by a bimetallic Fe-Co/SBA-15 catalyst for the degradation of Orange II in water.
J Hazard Mater. 2015; 283:70-9.JH

Abstract

Mesoporous silica SBA-15 supported iron and cobalt (Fe-Co/SBA-15) was prepared and used as catalyst in the ultrasound (US) enhanced heterogeneous activation of peroxymonosulfate (PMS, HSO5(-)) process. The effects of some important reaction parameters on the removal of Orange II by US/Fe-Co/SBA-15/PMS process were investigated. The results indicated that the removal rate of Orange II was not significantly affected by the initial pH, and it increased with the higher PMS concentration, reaction temperature, Fe-Co/SBA-15 dosage and ultrasonic power. Furthermore, sulfate radicals (SO4(-)) were assumed to be the dominating reactive species for the Orange II decolorization. Moreover, the Fe-Co/SBA-15 catalyst showed high activity during the repeated experiments. The intermediate products were identified by GC-MS, thereby a plausible degradation pathway is proposed. In addition, the chemical oxygen demand (COD) removal efficiencies at 2 and 24h were 56.8% and 80.1%, respectively and the corresponding total organic carbon (TOC) removal efficiencies were 33.8 and 53.3%. Finally, toxicity tests with activated sludge showed that the toxicity of the solution increased during the first stage and then decreased significantly with the progress of the oxidation.

Authors+Show Affiliations

Department of Environmental Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China.Department of Environmental Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China. Electronic address: eeng@whu.edu.cn.Department of Environmental Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China.Department of Environmental Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25262480

Citation

Cai, Chun, et al. "Ultrasound Enhanced Heterogeneous Activation of Peroxymonosulfate By a Bimetallic Fe-Co/SBA-15 Catalyst for the Degradation of Orange II in Water." Journal of Hazardous Materials, vol. 283, 2015, pp. 70-9.
Cai C, Zhang H, Zhong X, et al. Ultrasound enhanced heterogeneous activation of peroxymonosulfate by a bimetallic Fe-Co/SBA-15 catalyst for the degradation of Orange II in water. J Hazard Mater. 2015;283:70-9.
Cai, C., Zhang, H., Zhong, X., & Hou, L. (2015). Ultrasound enhanced heterogeneous activation of peroxymonosulfate by a bimetallic Fe-Co/SBA-15 catalyst for the degradation of Orange II in water. Journal of Hazardous Materials, 283, 70-9. https://doi.org/10.1016/j.jhazmat.2014.08.053
Cai C, et al. Ultrasound Enhanced Heterogeneous Activation of Peroxymonosulfate By a Bimetallic Fe-Co/SBA-15 Catalyst for the Degradation of Orange II in Water. J Hazard Mater. 2015;283:70-9. PubMed PMID: 25262480.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ultrasound enhanced heterogeneous activation of peroxymonosulfate by a bimetallic Fe-Co/SBA-15 catalyst for the degradation of Orange II in water. AU - Cai,Chun, AU - Zhang,Hui, AU - Zhong,Xing, AU - Hou,Liwei, Y1 - 2014/09/03/ PY - 2014/05/12/received PY - 2014/07/17/revised PY - 2014/08/10/accepted PY - 2014/9/29/entrez PY - 2014/9/30/pubmed PY - 2016/2/16/medline KW - Fe–Co/SBA-15 KW - Peroxymonosulfate KW - Sulfate radicals KW - Toxicity KW - Ultrasound SP - 70 EP - 9 JF - Journal of hazardous materials JO - J Hazard Mater VL - 283 N2 - Mesoporous silica SBA-15 supported iron and cobalt (Fe-Co/SBA-15) was prepared and used as catalyst in the ultrasound (US) enhanced heterogeneous activation of peroxymonosulfate (PMS, HSO5(-)) process. The effects of some important reaction parameters on the removal of Orange II by US/Fe-Co/SBA-15/PMS process were investigated. The results indicated that the removal rate of Orange II was not significantly affected by the initial pH, and it increased with the higher PMS concentration, reaction temperature, Fe-Co/SBA-15 dosage and ultrasonic power. Furthermore, sulfate radicals (SO4(-)) were assumed to be the dominating reactive species for the Orange II decolorization. Moreover, the Fe-Co/SBA-15 catalyst showed high activity during the repeated experiments. The intermediate products were identified by GC-MS, thereby a plausible degradation pathway is proposed. In addition, the chemical oxygen demand (COD) removal efficiencies at 2 and 24h were 56.8% and 80.1%, respectively and the corresponding total organic carbon (TOC) removal efficiencies were 33.8 and 53.3%. Finally, toxicity tests with activated sludge showed that the toxicity of the solution increased during the first stage and then decreased significantly with the progress of the oxidation. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/25262480/Ultrasound_enhanced_heterogeneous_activation_of_peroxymonosulfate_by_a_bimetallic_Fe_Co/SBA_15_catalyst_for_the_degradation_of_Orange_II_in_water_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(14)00716-X DB - PRIME DP - Unbound Medicine ER -