Modified carbide-derived carbons used in the catalytic wet peroxide oxidation of oily wastewaters

Díaz de Tuesta, Jose Luis; Munoz, Macarena; Domínguez, Carmen M.; Casas, Jose A.; Gläsel, Jan; Etzold, Bernard; Silva, Adrián; Faria, Joaquim; Gomes, Helder

Publication

Modified carbide-derived carbons used in the catalytic wet peroxide oxidation of oily wastewaters

2018Conference object

dc.contributor.author	Díaz de Tuesta, Jose Luis
dc.contributor.author	Munoz, Macarena
dc.contributor.author	Domínguez, Carmen M.
dc.contributor.author	Casas, Jose A.
dc.contributor.author	Gläsel, Jan
dc.contributor.author	Etzold, Bernard
dc.contributor.author	Silva, Adrián
dc.contributor.author	Faria, Joaquim
dc.contributor.author	Gomes, Helder
dc.date.accessioned	2020-01-15T10:58:33Z
dc.date.available	2020-01-15T10:58:33Z
dc.date.issued	2018
dc.description.abstract	Modified carbide-derived carbon (CDC) materials, prepared from TiC, were tested as catalysts in the decomposition of H2O2 and in the catalytic wet peroxide oxidation (CWPO) of 4-nitrophenol (4-NP), either in aqueous phase or in biphasic medium. The reactive extraction of Ti from the metal carbide (2 μm) was carried out to prepare the CDC materials, as described elsewhere [1]. Briefly, 0.03 m s−1 Cl2 gas was used (1.5 mol m−3 in He) as extraction agent during 5 h at 800, 1000 and 1200 ºC. Afterwards, H2 was used for 0.5 h at the extraction temperature to remove residual chlorine, resulting in CDC-800, CDC-1000 and CDC-1200 materials, respectively. Additionally, CDC-800 was treated with a mixture of 98% H2SO4 and 30% w/v H2O2 (3:1) at room temperature for 3 h by two methods: (1) wetting the material in the oxidative solution and (2) oxidizing the material partially encapsulated with WAX paraffin, resulting in CDC-800-Ox and CDC-800-Wax, respectively. Firstly, the materials were tested in the decomposition of H2O2 and, then, in the adsorption and CWPO of 4-NP, adapting the experimental procedure described in previous works [2-3] at the following operating conditions: 25-50 ºC, pH0 = 3.0, and concentrations of solid material, 4-NP and H2O2 of 2.5 g/L, 5.0 g/L and 17.8 g/L, respectively. Cyclohexane, c-C6 (O/W volume ratio = 1:5) was used to simulate oily wastewater and study the influence of the oil phase presence in the medium.	pt_PT
dc.description.sponsorship	This work is a result of project “AIProcMat@N2020 - Advanced Industrial Processes and Materials for a Sustainable Northern Region of Portugal 2020”, with the reference NORTE-01-0145-FEDER-000006, supported by NORTE 2020, under the Portugal 2020 Partnership Agreement, through FEDER and of Project POCI-01-0145- FEDER-006984 – Associate Laboratory LSRE-LCM funded by FEDER through COMPETE2020 - POCI – and by national funds through FCT. M. Munoz thanks the Spanish MINECO for the Ramón y Cajal postdoctoral contract (RYC-2016-20648).	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Diaz de Tuesta, Jose Luis; Munoz, Macarena; Dominguez, Carmen; Casas, José; Gläsel, Jan; Etzold, Bernard; Silva, Adrián; Faria, Joaquim; Gomes, Helder (2018). Modified carbide-derived carbons used in the catalytic wet peroxide oxidation of oily wastewaters. In CarboCat VIII - 8th International Symposium on Carbon for Catalysis. Porto. ISBN 978-989-8124-22-7	pt_PT
dc.identifier.isbn	978-989-8124-22-7
dc.identifier.uri	http://hdl.handle.net/10198/20382
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by-nc/4.0/	pt_PT
dc.title	Modified carbide-derived carbons used in the catalytic wet peroxide oxidation of oily wastewaters	pt_PT
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	Porto, Portugal	pt_PT
oaire.citation.startPage	42	pt_PT
oaire.citation.title	CarboCat VIII - 8th International Symposium on Carbon for Catalysis	pt_PT
person.familyName	Díaz de Tuesta
person.familyName	Gomes
person.givenName	Jose Luis
person.givenName	Helder
person.identifier.ciencia-id	7A1F-022B-7DBF
person.identifier.ciencia-id	6218-1E19-13EE
person.identifier.orcid	0000-0003-2408-087X
person.identifier.orcid	0000-0001-6898-2408
person.identifier.rid	D-9785-2017
person.identifier.scopus-author-id	55755821600
rcaap.rights	openAccess	pt_PT
rcaap.type	conferenceObject	pt_PT
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