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Sorting efficiency in mechanical sorting of construction and demolition waste
The requirements for the recycling of construction and demolition waste are tightening, and companies in the waste business have improved their performance to comply with new legislation. Construction and demolition waste includes various recyclable materials, such as metals, plastics and wood. Howe...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7477768/ https://www.ncbi.nlm.nih.gov/pubmed/32342764 http://dx.doi.org/10.1177/0734242X20914750 |
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author | Hyvärinen, Marko Ronkanen, Mikko Kärki, Timo |
author_facet | Hyvärinen, Marko Ronkanen, Mikko Kärki, Timo |
author_sort | Hyvärinen, Marko |
collection | PubMed |
description | The requirements for the recycling of construction and demolition waste are tightening, and companies in the waste business have improved their performance to comply with new legislation. Construction and demolition waste includes various recyclable materials, such as metals, plastics and wood. However, effective material recovery requires functional and reliable technology for sorting in order to separate waste fractions into useful secondary materials or applications. This paper concerns the mechanical sorting efficiency of construction and demolition waste with a commercial mechanical sorting equipment consisting of a roller screening and an air separation unit. Sorting ability is studied with pre-sorted and crushed test material. Sieve analysis of pre-sorted test material is used to define particle size distribution before sorting. The quality criteria of construction and demolition waste vary greatly, depending on a number of factors which pose a challenge to the operation of the sorting system. The studied sorting equipment was found to be reliable for producing nine different fractions from pre-sorted and crushed material mixtures. The requirements for the purity level of the fractions and the profitability of utilization define the number of fractions to be sorted cost-efficiently. Typically, a compromise between cost and purity level has to be found. |
format | Online Article Text |
id | pubmed-7477768 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-74777682020-09-24 Sorting efficiency in mechanical sorting of construction and demolition waste Hyvärinen, Marko Ronkanen, Mikko Kärki, Timo Waste Manag Res Short Communication The requirements for the recycling of construction and demolition waste are tightening, and companies in the waste business have improved their performance to comply with new legislation. Construction and demolition waste includes various recyclable materials, such as metals, plastics and wood. However, effective material recovery requires functional and reliable technology for sorting in order to separate waste fractions into useful secondary materials or applications. This paper concerns the mechanical sorting efficiency of construction and demolition waste with a commercial mechanical sorting equipment consisting of a roller screening and an air separation unit. Sorting ability is studied with pre-sorted and crushed test material. Sieve analysis of pre-sorted test material is used to define particle size distribution before sorting. The quality criteria of construction and demolition waste vary greatly, depending on a number of factors which pose a challenge to the operation of the sorting system. The studied sorting equipment was found to be reliable for producing nine different fractions from pre-sorted and crushed material mixtures. The requirements for the purity level of the fractions and the profitability of utilization define the number of fractions to be sorted cost-efficiently. Typically, a compromise between cost and purity level has to be found. SAGE Publications 2020-04-28 2020-07 /pmc/articles/PMC7477768/ /pubmed/32342764 http://dx.doi.org/10.1177/0734242X20914750 Text en © The Author(s) 2020 https://creativecommons.org/licenses/by/4.0/ This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
spellingShingle | Short Communication Hyvärinen, Marko Ronkanen, Mikko Kärki, Timo Sorting efficiency in mechanical sorting of construction and demolition waste |
title | Sorting efficiency in mechanical sorting of construction and demolition waste |
title_full | Sorting efficiency in mechanical sorting of construction and demolition waste |
title_fullStr | Sorting efficiency in mechanical sorting of construction and demolition waste |
title_full_unstemmed | Sorting efficiency in mechanical sorting of construction and demolition waste |
title_short | Sorting efficiency in mechanical sorting of construction and demolition waste |
title_sort | sorting efficiency in mechanical sorting of construction and demolition waste |
topic | Short Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7477768/ https://www.ncbi.nlm.nih.gov/pubmed/32342764 http://dx.doi.org/10.1177/0734242X20914750 |
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