Fly ash reactivity modified by nitrogen and sulfur compounds
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http://hdl.handle.net/10045/109382
Title: | Fly ash reactivity modified by nitrogen and sulfur compounds |
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Authors: | Soler, Aurora | Conesa, Juan A. | Ortuño García, Nuria |
Research Group/s: | Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN) |
Center, Department or Service: | Universidad de Alicante. Departamento de Ingeniería Química |
Keywords: | Fly ash | Reactivity | Nitrogen | Sulfur |
Knowledge Area: | Ingeniería Química |
Issue Date: | 2019 |
Publisher: | Federal Environmental Agency |
Citation: | Organohalogen Compounds. 2019, 81: 235-238 |
Abstract: | The inhibitory effect of thiourea (TUA), ammonium thiosulfate (TSA) and amidosulfonic acid (ASA) on the reactivity of fly ash air was investigated using a thermobalance at different heating rates (5, 10 and 20 K min-1). A model fly ash (activated carbon + 50 wt.% CuCl2·2H2O, pyrolyzed at 700 ºC and washed) was used as carbonaceous material. Adding CuCl2·2H2O to the activated carbon led to an increased rate of decomposition with the air’s oxygen. TUA and TSA behaved in a similar way, accelerating the decomposition of the model fly ash. ASA also accelerated the decomposition but to a lower extent. We proof that the increase in decomposition rate is caused by a reaction between carbonaceous material and N- and S-containing compounds. The formation of nitrogenated and sulphured compounds was confirmed by TG-MS. A kinetic model based on a single reaction of order 0.6 showed very good correlations with all the heating rates tested in oxidant atmosphere. |
Sponsor: | This work was supported by the CTQ2016-76608-R project from the Ministry of Economy, Industry and Competitiveness (Spain), and the UAUSTI17-07 grant from University of Alicante (Spain). |
URI: | http://hdl.handle.net/10045/109382 |
ISSN: | 1026-4892 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © Organohalogen Compounds |
Peer Review: | si |
Appears in Collections: | INV - REMAN - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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Soler_etal_2019_OrganohalogenCompounds.pdf | 749,33 kB | Adobe PDF | Open Preview | |
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