Decolorization and Biodegradability Enhancement of Synthetic Batik Wastewater Containing Reactive Black 5 and Reactive Orange 16 by Ozonation
نویسندگان
چکیده
The batik industry generates large amounts of highly colored wastewater. Azo dyes in wastewater can cause environmental pollution. In this study, synthetic containing 32 mg/L Reactive Black 5 (RB5) and Orange 16 (RO16) was treated by ozonation a 2 L batch reactor. color unit reduced from 4240 to 70 after 10 min below 50 15 (7.3 g O3/m3, 4 L/min). first-order decay constant for determined be 1.11 min?1 RB5 0.82 RO16. Biodegradation tests using activated-sludge microorganisms showed the toxicity RO16 microbial respiration revealed detoxification ozonation. Three-dimensional fluorescence spectroscopy analysis indicated temporal accumulation ozonolysis products RB5. chemical oxygen demand concentration 86 73 biodegradation alone, 63 54 followed biodegradation. Existing treatment plants conventional bioprocesses upgraded achieve robust dye installing process as pretreatment.
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ژورنال
عنوان ژورنال: Water
سال: 2022
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w14203330