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Multifactorial optimization of the decolorisation parameters of wastewaters resulting from dyeing flowers.

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Date
2009-01-01
Author(s)
Gil Pavas, Edison
Angel Gomez-Garcia, Miguel
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Abstract
Abstract
This work deals with the treatment of the wastewaters resulting from the process of dyeing flowers. In some local cases for growing flowers near to Medellin (Colombia), wastewater color was found to be one of the main problems in meeting local effluent standards. Wastewaters were treated by photodegradation process (which includes photocatalysis) to achieve the degradation of dyes mixture and organic matter in the wastewater. A multifactorial experimental design was proposed, including as experimental factors the following variables: pH, and the concentration of both catalyst (TiO(2)) and hydrogen peroxide (H(2)O(2)). According to the obtained results, at the optimized variables values, it is possible to reach a 99% reduction of dyes, a 76.9% of mineralization (TOC) and a final biodegradability of 0.834. Kinetic analysis allows proposing a pseudo first order reaction for the reduction, the mineralization, and the biodegradation processes.
URI
http://hdl.handle.net/10784/29368
Source / Editor URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-66649136821&doi=10.2166%2fwst.2009.114&partnerID=40&md5=d76a26c17724628302f7121b73b52e5d
DOI
10.2166/wst.2009.114
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