Tags

Type your tag names separated by a space and hit enter

The removal of azo dye from aqueous solution by oxidation with peroxydisulfate in the presence of granular activated carbon: Performance, mechanism and reusability.
Chemosphere. 2020 Nov; 259:127400.C

Abstract

Granular activated carbon (GAC) was used as catalyst for the activation of peroxydisulfate (PDS) to decolorize and degrade Acid Orange 7 (AO7) in water. EPR spectra and radical quencher experiments were employed to identify the active species for AO7 oxidation in the PDS/GAC system. Linear sweep voltammetry (LSV) and chronoamperometry test were carried out to identify the contribution of nonradical mechanism for AO7 decay. The investigation of crucial operational parameters on the decolorization indicated 100 mg/L AO7 can be almost totally decolorized in a broad range of pH. Common inorganic anions adversely affect the AO7 decolorization process and the inhibition was in the order of: HCO3- > H2PO4- > SO42- > Cl- > NO3-. UV-vis spectra showed the destruction of the aromatic moiety of AO7 molecule during the oxidation reaction of the PDS/GAC system. The transformation of nitrogen related to the azo bond in AO7 molecule in this system was observed by monitoring the released N-containing inorganic ions. Recycle experiments showed GAC cannot be reused directly but its catalytic ability can be restored by using electrochemical method.

Authors+Show Affiliations

Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China.Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China.Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China.Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China.Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China. Electronic address: lheng2015@whu.edu.cn.Department of Environmental Science and Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China. Electronic address: eeng@whu.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32593002

Citation

Li, Jing, et al. "The Removal of Azo Dye From Aqueous Solution By Oxidation With Peroxydisulfate in the Presence of Granular Activated Carbon: Performance, Mechanism and Reusability." Chemosphere, vol. 259, 2020, p. 127400.
Li J, Zhu K, Li R, et al. The removal of azo dye from aqueous solution by oxidation with peroxydisulfate in the presence of granular activated carbon: Performance, mechanism and reusability. Chemosphere. 2020;259:127400.
Li, J., Zhu, K., Li, R., Fan, X., Lin, H., & Zhang, H. (2020). The removal of azo dye from aqueous solution by oxidation with peroxydisulfate in the presence of granular activated carbon: Performance, mechanism and reusability. Chemosphere, 259, 127400. https://doi.org/10.1016/j.chemosphere.2020.127400
Li J, et al. The Removal of Azo Dye From Aqueous Solution By Oxidation With Peroxydisulfate in the Presence of Granular Activated Carbon: Performance, Mechanism and Reusability. Chemosphere. 2020;259:127400. PubMed PMID: 32593002.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The removal of azo dye from aqueous solution by oxidation with peroxydisulfate in the presence of granular activated carbon: Performance, mechanism and reusability. AU - Li,Jing, AU - Zhu,Kangmeng, AU - Li,Ruimeng, AU - Fan,Xiaohui, AU - Lin,Heng, AU - Zhang,Hui, Y1 - 2020/06/17/ PY - 2020/02/17/received PY - 2020/06/07/revised PY - 2020/06/10/accepted PY - 2020/6/28/pubmed PY - 2020/9/18/medline PY - 2020/6/28/entrez KW - Azo dye KW - Granular activated carbon KW - Nonradical mechanism KW - Peroxydisulfate KW - Reactive radical SP - 127400 EP - 127400 JF - Chemosphere JO - Chemosphere VL - 259 N2 - Granular activated carbon (GAC) was used as catalyst for the activation of peroxydisulfate (PDS) to decolorize and degrade Acid Orange 7 (AO7) in water. EPR spectra and radical quencher experiments were employed to identify the active species for AO7 oxidation in the PDS/GAC system. Linear sweep voltammetry (LSV) and chronoamperometry test were carried out to identify the contribution of nonradical mechanism for AO7 decay. The investigation of crucial operational parameters on the decolorization indicated 100 mg/L AO7 can be almost totally decolorized in a broad range of pH. Common inorganic anions adversely affect the AO7 decolorization process and the inhibition was in the order of: HCO3- > H2PO4- > SO42- > Cl- > NO3-. UV-vis spectra showed the destruction of the aromatic moiety of AO7 molecule during the oxidation reaction of the PDS/GAC system. The transformation of nitrogen related to the azo bond in AO7 molecule in this system was observed by monitoring the released N-containing inorganic ions. Recycle experiments showed GAC cannot be reused directly but its catalytic ability can be restored by using electrochemical method. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/32593002/The_removal_of_azo_dye_from_aqueous_solution_by_oxidation_with_peroxydisulfate_in_the_presence_of_granular_activated_carbon:_Performance_mechanism_and_reusability_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(20)31594-0 DB - PRIME DP - Unbound Medicine ER -