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Integrated Utilization of Sewage Sludge and Coal Gangue for Cement Clinker Products: Promoting Tricalcium Silicate Formation and Trace Elements Immobilization
The present study firstly proposed a method of integrated utilization of sewage sludge (SS) and coal gangue (CG), two waste products, for cement clinker products with the aim of heat recovery and environment protection. The results demonstrated that the incremental amounts of SS and CG addition was...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5502968/ https://www.ncbi.nlm.nih.gov/pubmed/28773400 http://dx.doi.org/10.3390/ma9040275 |
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author | Yang, Zhenzhou Zhang, Yingyi Liu, Lili Seetharaman, Seshadri Wang, Xidong Zhang, Zuotai |
author_facet | Yang, Zhenzhou Zhang, Yingyi Liu, Lili Seetharaman, Seshadri Wang, Xidong Zhang, Zuotai |
author_sort | Yang, Zhenzhou |
collection | PubMed |
description | The present study firstly proposed a method of integrated utilization of sewage sludge (SS) and coal gangue (CG), two waste products, for cement clinker products with the aim of heat recovery and environment protection. The results demonstrated that the incremental amounts of SS and CG addition was favorable for the formation of tricalcium silicate (C(3)S) during the calcinations, but excess amount of SS addition could cause the impediment effect on C(3)S formation. Furthermore, it was also observed that the C(3)S polymorphs showed the transition from rhombohedral to monoclinic structure as SS addition was increased to 15 wt %. During the calcinations, most of trace elements could be immobilized especially Zn and cannot be easily leached out. Given the encouraging results in the present study, the co-process of sewage sludge and coal gangue in the cement kiln can be expected with a higher quality of cement products and minimum pollution to the environment. |
format | Online Article Text |
id | pubmed-5502968 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-55029682017-07-28 Integrated Utilization of Sewage Sludge and Coal Gangue for Cement Clinker Products: Promoting Tricalcium Silicate Formation and Trace Elements Immobilization Yang, Zhenzhou Zhang, Yingyi Liu, Lili Seetharaman, Seshadri Wang, Xidong Zhang, Zuotai Materials (Basel) Article The present study firstly proposed a method of integrated utilization of sewage sludge (SS) and coal gangue (CG), two waste products, for cement clinker products with the aim of heat recovery and environment protection. The results demonstrated that the incremental amounts of SS and CG addition was favorable for the formation of tricalcium silicate (C(3)S) during the calcinations, but excess amount of SS addition could cause the impediment effect on C(3)S formation. Furthermore, it was also observed that the C(3)S polymorphs showed the transition from rhombohedral to monoclinic structure as SS addition was increased to 15 wt %. During the calcinations, most of trace elements could be immobilized especially Zn and cannot be easily leached out. Given the encouraging results in the present study, the co-process of sewage sludge and coal gangue in the cement kiln can be expected with a higher quality of cement products and minimum pollution to the environment. MDPI 2016-04-07 /pmc/articles/PMC5502968/ /pubmed/28773400 http://dx.doi.org/10.3390/ma9040275 Text en © 2016 by the authors; Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yang, Zhenzhou Zhang, Yingyi Liu, Lili Seetharaman, Seshadri Wang, Xidong Zhang, Zuotai Integrated Utilization of Sewage Sludge and Coal Gangue for Cement Clinker Products: Promoting Tricalcium Silicate Formation and Trace Elements Immobilization |
title | Integrated Utilization of Sewage Sludge and Coal Gangue for Cement Clinker Products: Promoting Tricalcium Silicate Formation and Trace Elements Immobilization |
title_full | Integrated Utilization of Sewage Sludge and Coal Gangue for Cement Clinker Products: Promoting Tricalcium Silicate Formation and Trace Elements Immobilization |
title_fullStr | Integrated Utilization of Sewage Sludge and Coal Gangue for Cement Clinker Products: Promoting Tricalcium Silicate Formation and Trace Elements Immobilization |
title_full_unstemmed | Integrated Utilization of Sewage Sludge and Coal Gangue for Cement Clinker Products: Promoting Tricalcium Silicate Formation and Trace Elements Immobilization |
title_short | Integrated Utilization of Sewage Sludge and Coal Gangue for Cement Clinker Products: Promoting Tricalcium Silicate Formation and Trace Elements Immobilization |
title_sort | integrated utilization of sewage sludge and coal gangue for cement clinker products: promoting tricalcium silicate formation and trace elements immobilization |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5502968/ https://www.ncbi.nlm.nih.gov/pubmed/28773400 http://dx.doi.org/10.3390/ma9040275 |
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