Tags

Type your tag names separated by a space and hit enter

Using ozone to reduce recalcitrant compounds and to enhance biodegradability of pulp and paper effluents.
Water Sci Technol. 2004; 50(3):173-82.WS

Abstract

The effect of ozone based oxidation on removing recalcitrant organic matter (ROM) and enhancing the biodegradability of alkaline bleach plant effluent was investigated. A bubble column ozonation tower was used in the study. The experiments were carried out at different temperatures (20 degrees C and 60 degrees C) and pH (9 and 11), with a number of biological and chemical parameters being monitored including BOD5, COD, TC, pH, color, and molecular weight distribution of organics (nominal cut off of 1,000 Da). Biodegradability of the effluent was determined based on BOD5/COD of the wastewater throughout the process. For all the experiments, ozonation enhanced the biodegradability of the effluent by 30-40%, which was associated with noticeable removal of ROM including high molecular weight (HMW) and color-causing organics by about 30% and 60%, respectively. While the biodegradability of HMW fraction increased by about 50%, there was no biodegradability improvement for low molecular weight (LMW) portion, which was originally readily biodegradable (with BOD5/COD of about 0.5). Statistical analysis of variance (ANOVA) revealed neither pH nor temperature played significant role on the ozonation process at 95% confidence level.

Authors+Show Affiliations

Bijan L
Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
Mohseni M
No affiliation info available

MeSH

Biodegradation, EnvironmentalIndustrial WasteMolecular WeightOxidants, PhotochemicalOxidation-ReductionOzonePaperWaste Disposal, FluidWater Pollutants

Pub Type(s)

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

Language

eng

PubMed ID

15461412

Citation

Bijan, L, and M Mohseni. "Using Ozone to Reduce Recalcitrant Compounds and to Enhance Biodegradability of Pulp and Paper Effluents." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 50, no. 3, 2004, pp. 173-82.
Bijan L, Mohseni M. Using ozone to reduce recalcitrant compounds and to enhance biodegradability of pulp and paper effluents. Water Sci Technol. 2004;50(3):173-82.
Bijan, L., & Mohseni, M. (2004). Using ozone to reduce recalcitrant compounds and to enhance biodegradability of pulp and paper effluents. Water Science and Technology : a Journal of the International Association On Water Pollution Research, 50(3), 173-82.
Bijan L, Mohseni M. Using Ozone to Reduce Recalcitrant Compounds and to Enhance Biodegradability of Pulp and Paper Effluents. Water Sci Technol. 2004;50(3):173-82. PubMed PMID: 15461412.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Using ozone to reduce recalcitrant compounds and to enhance biodegradability of pulp and paper effluents. AU - Bijan,L, AU - Mohseni,M, PY - 2004/10/6/pubmed PY - 2004/10/27/medline PY - 2004/10/6/entrez SP - 173 EP - 82 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci Technol VL - 50 IS - 3 N2 - The effect of ozone based oxidation on removing recalcitrant organic matter (ROM) and enhancing the biodegradability of alkaline bleach plant effluent was investigated. A bubble column ozonation tower was used in the study. The experiments were carried out at different temperatures (20 degrees C and 60 degrees C) and pH (9 and 11), with a number of biological and chemical parameters being monitored including BOD5, COD, TC, pH, color, and molecular weight distribution of organics (nominal cut off of 1,000 Da). Biodegradability of the effluent was determined based on BOD5/COD of the wastewater throughout the process. For all the experiments, ozonation enhanced the biodegradability of the effluent by 30-40%, which was associated with noticeable removal of ROM including high molecular weight (HMW) and color-causing organics by about 30% and 60%, respectively. While the biodegradability of HMW fraction increased by about 50%, there was no biodegradability improvement for low molecular weight (LMW) portion, which was originally readily biodegradable (with BOD5/COD of about 0.5). Statistical analysis of variance (ANOVA) revealed neither pH nor temperature played significant role on the ozonation process at 95% confidence level. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/15461412/Using_ozone_to_reduce_recalcitrant_compounds_and_to_enhance_biodegradability_of_pulp_and_paper_effluents_ DB - PRIME DP - Unbound Medicine ER -