Use of Ozone-Photocatalytic Oxidation ( O3 /UV/ TiO2 ) and Biological Remediation for Treatment of Produced Water from Petroleum Refineries

Batch ozone-photocatalytic oxidation ( O3 /UV/ TiO2 ) and biological remediation by macroalgae were performed in a laboratory-scale reactor to evaluate the efficiency of these processes in the degradation of contaminants and/or decrease in the ecotoxicity of produced waters of petroleum refineries....

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Bibliographic Details
Published in:Journal of environmental engineering (New York, N.Y.) N.Y.), 2010-01, Vol.136 (1), p.40-45
Main Authors: Corrêa, Albertina X. R, Tiepo, Erasmo N, Somensi, Cleder A, Sperb, Rafael M, Radetski, Claudemir M
Format: Article
Language:English
Subjects:
Ammonia
Applied sciences
Bacteria
Biological
Biological and physicochemical phenomena
Continental surface waters
Exact sciences and technology
Fish
General purification processes
Natural water pollution
Other industrial wastes. Sewage sludge
Oxidation
Poecilia vivipara
Pollution
TECHNICAL PAPERS
Titanium dioxide
Toxicity
Ulva
Vibrio fischeri
Waste water
Wastes
Wastewaters
Water treatment and pollution
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Summary:Batch ozone-photocatalytic oxidation ( O3 /UV/ TiO2 ) and biological remediation by macroalgae were performed in a laboratory-scale reactor to evaluate the efficiency of these processes in the degradation of contaminants and/or decrease in the ecotoxicity of produced waters of petroleum refineries. The effectiveness of the hybrid advanced oxidation process followed by biological treatment was evaluated through the physicochemical time-course analysis and ecotoxicological tests. The results showed that after 5 min of treatment the O3 /UV/ TiO2 combination was very effective and phenol concentration decreased by 99.9%, sulfide by 53.0%, COD by 37.7%, O&G by 5.2%, and ammonia by 1.9%. The following reductions in contaminants were obtained after 60 min of oxidation treatment: phenols 99.9%, O&G 98.2%, sulfide 97.2%, COD 89.2%, and ammonia 15%. The acute toxicity tests with the bacterium Vibrio fischeri (Lumistox) and the fish Poecilia vivipara showed a high toxicity of the raw effluents ( E (L) C50
ISSN:0733-9372
1943-7870
DOI:10.1061/(ASCE)EE.1943-7870.0000111