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Title

Environmental uses of zeolites in Ethiopia

AuthorsDíaz Carretero, Isabel
KeywordsEthiopia
Zeolites
Fluoride
Chromium
Kaolin
Issue Date1-May-2017
PublisherElsevier
CitationCatalysis Today 285: 29-38 (2017)
AbstractIn the past six years we have been intensively collaborating with the Chemistry Department of Addis Ababa University as well as Haramaya University to bust scientific knowledge related to zeolites and zeolite applications. Initially, we teamed up with geologists and government actors in the mining sectors; as a result we got access to natural zeolites from the north of the country, as well as other industrial minerals such as kaolin. In parallel we developed research activities in the use of zeolites as adsorbents and in catalytic processes related to environmental applications of necessity in Ethiopia. In the first part of this paper I will describe two examples of adsorption processes using mineral resources: one is a natural stilbite used to develop an adsorbent to remove fluoride from drinking waters; and the second one uses virgin kaolin to prepare a synthetic zeolite 4A that we used to remove chromium from tannery wastewaters. Finally, two catalytic examples will be described: in the first one we tackled the photocatalytic degradation of dyes from textile industries using Ti-modified natural and synthetic zeolites, and in the second one we used modified mordenites, both natural and synthetic, for the conversion of glucose into 5-HMF.
Publisher version (URL)http://dx.doi.org/10.14601/10.1016/j.cattod.2017.01.045
URIhttp://hdl.handle.net/10261/162301
DOI10.1016/j.cattod.2017.01.045
ISSN0920-5861
Appears in Collections:(ICP) Artículos
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