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Manufacturing of Lightweight Aggregates as an Auspicious Method of Sewage Sludge Utilization
Sewage sludge is a high-volume and low-cost waste commonly generated worldwide, so its utilization is a vital issue. The application of this waste in the manufacturing of lightweight aggregates was investigated. The process was performed using intensive mixers with volumes of 5 and 30 L, as well as...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764059/ https://www.ncbi.nlm.nih.gov/pubmed/33321852 http://dx.doi.org/10.3390/ma13245635 |
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author | Korol, Jerzy Głodniok, Marcin Hejna, Aleksander Pawlik, Tomasz Chmielnicki, Błażej Bondaruk, Jan |
author_facet | Korol, Jerzy Głodniok, Marcin Hejna, Aleksander Pawlik, Tomasz Chmielnicki, Błażej Bondaruk, Jan |
author_sort | Korol, Jerzy |
collection | PubMed |
description | Sewage sludge is a high-volume and low-cost waste commonly generated worldwide, so its utilization is a vital issue. The application of this waste in the manufacturing of lightweight aggregates was investigated. The process was performed using intensive mixers with volumes of 5 and 30 L, as well as the industrial 500 L mixer. Then, granulates were sintered in a tube furnace. The influence of composition and mixer size on the particle size, microstructure, mechanical performance, and stability of lightweight aggregates in different environments was analyzed. The best results were obtained for a 500 L mixer, enhancing the industrial potential of the presented process. Increasing the share of sewage sludge in the composition of aggregates enhanced their porosity and reduced the specific weight, which caused a drop in compressive strength. Nevertheless, for all analyzed materials, the mechanical performance was superior compared to many commercial products. Therefore, sewage sludge can be efficiently applied as a raw material for the manufacturing of lightweight aggregates. The presented results confirm that a proper adjustment of composition allows easy the tailoring of aggregates’ performance and cost. |
format | Online Article Text |
id | pubmed-7764059 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77640592020-12-27 Manufacturing of Lightweight Aggregates as an Auspicious Method of Sewage Sludge Utilization Korol, Jerzy Głodniok, Marcin Hejna, Aleksander Pawlik, Tomasz Chmielnicki, Błażej Bondaruk, Jan Materials (Basel) Article Sewage sludge is a high-volume and low-cost waste commonly generated worldwide, so its utilization is a vital issue. The application of this waste in the manufacturing of lightweight aggregates was investigated. The process was performed using intensive mixers with volumes of 5 and 30 L, as well as the industrial 500 L mixer. Then, granulates were sintered in a tube furnace. The influence of composition and mixer size on the particle size, microstructure, mechanical performance, and stability of lightweight aggregates in different environments was analyzed. The best results were obtained for a 500 L mixer, enhancing the industrial potential of the presented process. Increasing the share of sewage sludge in the composition of aggregates enhanced their porosity and reduced the specific weight, which caused a drop in compressive strength. Nevertheless, for all analyzed materials, the mechanical performance was superior compared to many commercial products. Therefore, sewage sludge can be efficiently applied as a raw material for the manufacturing of lightweight aggregates. The presented results confirm that a proper adjustment of composition allows easy the tailoring of aggregates’ performance and cost. MDPI 2020-12-10 /pmc/articles/PMC7764059/ /pubmed/33321852 http://dx.doi.org/10.3390/ma13245635 Text en © 2020 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 Korol, Jerzy Głodniok, Marcin Hejna, Aleksander Pawlik, Tomasz Chmielnicki, Błażej Bondaruk, Jan Manufacturing of Lightweight Aggregates as an Auspicious Method of Sewage Sludge Utilization |
title | Manufacturing of Lightweight Aggregates as an Auspicious Method of Sewage Sludge Utilization |
title_full | Manufacturing of Lightweight Aggregates as an Auspicious Method of Sewage Sludge Utilization |
title_fullStr | Manufacturing of Lightweight Aggregates as an Auspicious Method of Sewage Sludge Utilization |
title_full_unstemmed | Manufacturing of Lightweight Aggregates as an Auspicious Method of Sewage Sludge Utilization |
title_short | Manufacturing of Lightweight Aggregates as an Auspicious Method of Sewage Sludge Utilization |
title_sort | manufacturing of lightweight aggregates as an auspicious method of sewage sludge utilization |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7764059/ https://www.ncbi.nlm.nih.gov/pubmed/33321852 http://dx.doi.org/10.3390/ma13245635 |
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