Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-10900
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Main Title: Modified natural zeolite as heterogeneous Fenton catalyst in treatment of recalcitrants in industrial effluent
Author(s): Arimi, Milton M.
Type: Article
Language Code: en
Abstract: Industrial effluents with high recalcitrants should undergo post-treatment after biological treatment. The aim of this study was to use cheap and abundantly available natural materials to develop heterogeneous Fenton catalysts for the removal of colored recalcitrants in molasses distillery wastewater (MDW). The pellets of zeolite, which is naturally available in many countries, were modified by pre-treatment with sulphuric acid, nitric acid and hydrochloric acid, before embedding on them the ferrous ions. The effects of pH and temperature on heterogeneous Fenton were studied using the modified catalysts. The sulphuric acid-ferrous modified catalysts showed the highest affectivity which achieved 90% color and 60% TOC (total organic carbon) removal at 150 g/L pellet catalyst dosage, 2 g/L H2O2 and 25 °C. The heterogeneous Fenton with the same catalyst caused improvement in the biodegradability of anaerobic effluent from 0.07 to 0.55. The catalyst was also applied to pre-treat the raw MDW and increased it's biodegradability by 4%. The color of the resultant anaerobic effluent was also reduced. The kinetics of total TOC removal was found to depend on operation temperature. It was best described by simultaneous first and second order kinetics model for the initial reaction and second order model for the rest of the reaction.
URI: https://depositonce.tu-berlin.de/handle/11303/12020
http://dx.doi.org/10.14279/depositonce-10900
Issue Date: 2017
Date Available: 19-Nov-2020
DDC Class: 660 Chemische Verfahrenstechnik
Subject(s): fenton
heterogeneous
wastewater
zeolite
treatment
License: https://creativecommons.org/licenses/by-nc-nd/4.0/
Journal Title: Progress in Natural Science: Materials International
Publisher: Elsevier
Publisher Place: Amsterdam
Volume: 27
Issue: 2
Publisher DOI: 10.1016/j.pnsc.2017.02.001
Page Start: 275
Page End: 282
EISSN: 1745-5391
ISSN: 1002-0071
Appears in Collections:FG Umweltverfahrenstechnik » Publications

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