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Evaluation of biodegradability and oxidation degree of hospital wastewater using photo-Fenton process as the pretreatment method.
J Hazard Mater. 2006 Nov 16; 138(2):384-91.JH

Abstract

In this work, the photo-Fenton process was used for the pretreatment of hospital wastewater with the objective of improving its overall biodegradability and determining the degree of increased oxidation. The chemical oxygen demand (COD), 5-day biochemical oxygen demand (BOD5), total organic carbon (TOC) and toxicity towards the gram negative marine bioluminescent bacteria of the species V. fischeri were selected as the environmental sum parameters to follow the performance of this process. The enhancement of biodegradability, evaluated in terms of the BOD5/COD ratio, increased from 0.3 to 0.52 and the oxidation degree, calculated in terms of AOS, leveled up from -1.14 to +1.58 at the optimum conditions; a dosage ratio of COD:H2O2:Fe(II) at 1:4:0.1, and a reaction pH of 3. The reduction in the inhibition percentage from the toxicity test indicated the safe levels for micro-organisms in degrading the residual organic substance in this method. Almost total removal percentages of COD, BOD5, and TOC were found by a sequential activated sludge process for the pre-treated wastewater. Results obtained from this work indicated that the photo-Fenton process could be a suitable pretreatment method in reducing toxicity of pollutants and enhancing biodegradability of hospital wastewaters treated in a coupled photochemical-biological system.

Authors+Show Affiliations

Environmental Nanomaterial Research and Development Unit, Department of Environmental Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, 91 Pracha-Utid Road, Tungkru, Bangkok 10140, Thailand. puangrat.kaj@kmutt.ac.thNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

16938387

Citation

Kajitvichyanukul, Puangrat, and Nattapol Suntronvipart. "Evaluation of Biodegradability and Oxidation Degree of Hospital Wastewater Using photo-Fenton Process as the Pretreatment Method." Journal of Hazardous Materials, vol. 138, no. 2, 2006, pp. 384-91.
Kajitvichyanukul P, Suntronvipart N. Evaluation of biodegradability and oxidation degree of hospital wastewater using photo-Fenton process as the pretreatment method. J Hazard Mater. 2006;138(2):384-91.
Kajitvichyanukul, P., & Suntronvipart, N. (2006). Evaluation of biodegradability and oxidation degree of hospital wastewater using photo-Fenton process as the pretreatment method. Journal of Hazardous Materials, 138(2), 384-91.
Kajitvichyanukul P, Suntronvipart N. Evaluation of Biodegradability and Oxidation Degree of Hospital Wastewater Using photo-Fenton Process as the Pretreatment Method. J Hazard Mater. 2006 Nov 16;138(2):384-91. PubMed PMID: 16938387.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of biodegradability and oxidation degree of hospital wastewater using photo-Fenton process as the pretreatment method. AU - Kajitvichyanukul,Puangrat, AU - Suntronvipart,Nattapol, Y1 - 2006/05/27/ PY - 2006/04/16/received PY - 2006/05/19/revised PY - 2006/05/22/accepted PY - 2006/8/30/pubmed PY - 2007/2/21/medline PY - 2006/8/30/entrez SP - 384 EP - 91 JF - Journal of hazardous materials JO - J Hazard Mater VL - 138 IS - 2 N2 - In this work, the photo-Fenton process was used for the pretreatment of hospital wastewater with the objective of improving its overall biodegradability and determining the degree of increased oxidation. The chemical oxygen demand (COD), 5-day biochemical oxygen demand (BOD5), total organic carbon (TOC) and toxicity towards the gram negative marine bioluminescent bacteria of the species V. fischeri were selected as the environmental sum parameters to follow the performance of this process. The enhancement of biodegradability, evaluated in terms of the BOD5/COD ratio, increased from 0.3 to 0.52 and the oxidation degree, calculated in terms of AOS, leveled up from -1.14 to +1.58 at the optimum conditions; a dosage ratio of COD:H2O2:Fe(II) at 1:4:0.1, and a reaction pH of 3. The reduction in the inhibition percentage from the toxicity test indicated the safe levels for micro-organisms in degrading the residual organic substance in this method. Almost total removal percentages of COD, BOD5, and TOC were found by a sequential activated sludge process for the pre-treated wastewater. Results obtained from this work indicated that the photo-Fenton process could be a suitable pretreatment method in reducing toxicity of pollutants and enhancing biodegradability of hospital wastewaters treated in a coupled photochemical-biological system. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/16938387/Evaluation_of_biodegradability_and_oxidation_degree_of_hospital_wastewater_using_photo_Fenton_process_as_the_pretreatment_method_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(06)00546-2 DB - PRIME DP - Unbound Medicine ER -