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The testing of several biological and chemical coupled treatments for Cibacron Red FN-R azo dye removal.
J Hazard Mater. 2008 Jun 15; 154(1-3):484-90.JH

Abstract

Several biological and chemical coupled treatments for Cibacron Red FN-R reactive azo dye degradation have been evaluated. Initially, a two-stage anaerobic-aerobic biotreatment has been assessed for different dye concentrations (250, 1250 and 3135 mg l(-1)). 92-97% decolourisation was attained during the anaerobic digestion operating in batch mode. However, no dissolved organic carbon (DOC) removal neither biogas production was observed during the process, indicating that no methanogenesis occurred. Additionally, according to Biotox and Zahn-Wellens assays, the anaerobically generated colourless solutions (presumably containing the resulting aromatic amines from azo bond cleavage) were found to be more toxic than the initial dye as well as aerobically non-biodegradable, thus impeding the anaerobic-aerobic biological treatment. In a second part, the use of an advanced oxidation process (AOP) like photo-Fenton or ozonation as a chemical post-treatments of the anaerobic process has been considered for the complete dye by-products mineralisation. The best results were obtained by means of ozonation at pH 10.5, achieving a global 83% mineralisation and giving place to a final harmless effluent. On the contrary, the tested photo-Fenton conditions were not efficient enough to complete oxidation.

Authors+Show Affiliations

Departament de Química, Edifici Cn, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

18053640

Citation

García-Montaño, Julia, et al. "The Testing of Several Biological and Chemical Coupled Treatments for Cibacron Red FN-R Azo Dye Removal." Journal of Hazardous Materials, vol. 154, no. 1-3, 2008, pp. 484-90.
García-Montaño J, Domènech X, García-Hortal JA, et al. The testing of several biological and chemical coupled treatments for Cibacron Red FN-R azo dye removal. J Hazard Mater. 2008;154(1-3):484-90.
García-Montaño, J., Domènech, X., García-Hortal, J. A., Torrades, F., & Peral, J. (2008). The testing of several biological and chemical coupled treatments for Cibacron Red FN-R azo dye removal. Journal of Hazardous Materials, 154(1-3), 484-90.
García-Montaño J, et al. The Testing of Several Biological and Chemical Coupled Treatments for Cibacron Red FN-R Azo Dye Removal. J Hazard Mater. 2008 Jun 15;154(1-3):484-90. PubMed PMID: 18053640.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The testing of several biological and chemical coupled treatments for Cibacron Red FN-R azo dye removal. AU - García-Montaño,Julia, AU - Domènech,Xavier, AU - García-Hortal,José A, AU - Torrades,Francesc, AU - Peral,José, Y1 - 2007/10/22/ PY - 2007/06/27/received PY - 2007/10/15/revised PY - 2007/10/15/accepted PY - 2007/12/7/pubmed PY - 2008/7/30/medline PY - 2007/12/7/entrez SP - 484 EP - 90 JF - Journal of hazardous materials JO - J Hazard Mater VL - 154 IS - 1-3 N2 - Several biological and chemical coupled treatments for Cibacron Red FN-R reactive azo dye degradation have been evaluated. Initially, a two-stage anaerobic-aerobic biotreatment has been assessed for different dye concentrations (250, 1250 and 3135 mg l(-1)). 92-97% decolourisation was attained during the anaerobic digestion operating in batch mode. However, no dissolved organic carbon (DOC) removal neither biogas production was observed during the process, indicating that no methanogenesis occurred. Additionally, according to Biotox and Zahn-Wellens assays, the anaerobically generated colourless solutions (presumably containing the resulting aromatic amines from azo bond cleavage) were found to be more toxic than the initial dye as well as aerobically non-biodegradable, thus impeding the anaerobic-aerobic biological treatment. In a second part, the use of an advanced oxidation process (AOP) like photo-Fenton or ozonation as a chemical post-treatments of the anaerobic process has been considered for the complete dye by-products mineralisation. The best results were obtained by means of ozonation at pH 10.5, achieving a global 83% mineralisation and giving place to a final harmless effluent. On the contrary, the tested photo-Fenton conditions were not efficient enough to complete oxidation. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18053640/The_testing_of_several_biological_and_chemical_coupled_treatments_for_Cibacron_Red_FN_R_azo_dye_removal_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)01498-7 DB - PRIME DP - Unbound Medicine ER -