H2O2/UV Photo-oxidation of Non-biodegradable DYA Textile-dyeWastewater in a Multi-lamp Bubble Column Photoreactor

Hudaya, Tedi and Stefanus, Michael and Agustina, Maria (2011) H2O2/UV Photo-oxidation of Non-biodegradable DYA Textile-dyeWastewater in a Multi-lamp Bubble Column Photoreactor. Prosiding Seminar Nasional Teknik Kimia “Kejuangan” 2011. ISSN 1693 – 4393

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Abstract

Textile dyeing industries, especially in West Java region, are usually located in a densely populated area. The wastewater effluents, if not properly treated, will cause serious pollution problems to the surrounding water streams since they mostly contain toxic and non-biodegradable synthetic dyes characterized by a very low BOD5/COD ratio (< 0.1).This study investigated the use of UV/H2O2 technique for treating nonbiodegradable textile dye waste water in a pilot scale (50 L) multi-lamp bubble column photoreactor. The final aim of the treatment is to increase the waste water BOD5/COD ratio until the biodegradability threshold is reached (> 0.1), so that a cheaper conventional biological treatment may be subsequently applied. Two major operating conditions under investigation, the initial H2O2 concentration and pH were varied between 0.05 – 1 % w/w, and 1 – 5, respectively. The effect of both variables to the color content removal of the treated wastewater was examined. This study particularly used a synthetic wastewater containing Dianic Yellow Ace (DYA), with similar color content with real waste water from a textile dyeing industry (PT Himalaya) in Bandung, Indonesia. Within the experimental condition range, 44 – 96% color content was successfully removed within 6 hours illumination period using 3 x 75 Watt low pressure Hg UV lamp. The aeration flow rate used in the photoreactor was 4 L/min, and the best result of 96.7% color removal was achieved at initial H2O2 concentration of 0.1 % w/w and pH 3. Additional test with a real industrial textile-dye wastewater, under 7.5 Watt/L UV irradiation using those best conditions, resulted in BOD5/COD ratio increase from 0.008 to 0.1 (biodegradability threshold) within 10.5 hours. Keywords: non-biodegradable, textile dye, UV/H2O2, bubble-column, photoreactor

Item Type: Article
Subjects: 600 Teknologi
Divisions: Fakultas Teknologi Industri > Teknik Kimia
Depositing User: Adianto Birowo
Date Deposited: 06 Jun 2011 01:43
Last Modified: 11 May 2015 07:48
URI: http://repository.upnyk.ac.id/id/eprint/487

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