Inhibiting fly ash reactivity by adding N- and S- containing compounds
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10045/79490
Title: | Inhibiting fly ash reactivity by adding N- and S- containing compounds |
---|---|
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: | Inhibition | Thiourea | Ammonium thiosulfate | Amidosulfonic acid | Model ash | Thermogravimetry |
Knowledge Area: | Ingeniería Química |
Issue Date: | Nov-2018 |
Publisher: | Elsevier |
Citation: | Chemosphere. 2018, 211: 294-301. doi:10.1016/j.chemosphere.2018.07.177 |
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 °C 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 postulate 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), the PROMETEOII/2014/007 project of the Valencian Community Regional Government (Spain) and the UAUSTI17-07 grant from University of Alicante (Spain). |
URI: | http://hdl.handle.net/10045/79490 |
ISSN: | 0045-6535 (Print) | 1879-1298 (Online) |
DOI: | 10.1016/j.chemosphere.2018.07.177 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2018 Elsevier Ltd. |
Peer Review: | si |
Publisher version: | https://doi.org/10.1016/j.chemosphere.2018.07.177 |
Appears in Collections: | INV - REMAN - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2018_Soler_etal_Chemosphere_final.pdf | Versión final (acceso restringido) | 1,67 MB | Adobe PDF | Open Request a copy |
2018_Soler_etal_Chemosphere_preprint.pdf | Preprint (acceso abierto) | 2,15 MB | Adobe PDF | Open Preview |
Items in RUA are protected by copyright, with all rights reserved, unless otherwise indicated.