Advanced

Effects of pre-treatment technologies on quantity and quality of source-sorted municipal organic waste for biogas recovery

Hansen, Trine Lund; la Cour Jansen, Jes LU ; Davidsson, Åsa LU and Christensen, Thomas Hojlund (2007) In Waste Management 27(3). p.398-405
Abstract
Source-sorted municipal organic waste collected from different dwelling types in five Danish cities and pre-treated at three different plants was sampled and characterized several times during one year to investigate the origin of any differences in composition of the pre-treated waste introduced by city, pre-treatment technology, dwelling type or annual season. The investigated pre-treatment technologies were screw press, disc screen and shredder + magnet. The average quantity of pre-treated organic waste (biomass) produced from the incoming waste varied between the investigated pre-treatment technologies: 59%, 66% and 98% wet weight, respectively (41%, 34% and 2% reject, respectively). The pre-treatment technologies showed differences... (More)
Source-sorted municipal organic waste collected from different dwelling types in five Danish cities and pre-treated at three different plants was sampled and characterized several times during one year to investigate the origin of any differences in composition of the pre-treated waste introduced by city, pre-treatment technology, dwelling type or annual season. The investigated pre-treatment technologies were screw press, disc screen and shredder + magnet. The average quantity of pre-treated organic waste (biomass) produced from the incoming waste varied between the investigated pre-treatment technologies: 59%, 66% and 98% wet weight, respectively (41%, 34% and 2% reject, respectively). The pre-treatment technologies showed differences with respect to distribution of the chemical components in the waste between the biomass and the rejected material (reject), especially for dry matter, ash, collection bag material (plastic or paper) and easily degradable organic matter. Furthermore, the particle size of the biomass was related to the pre-treatment technology. The content of plastic in the biomass depended both on the actual collection bag material used in the system and the pre-treatment technology. The sampled reject consisted mostly of organic matter. For cities using plastic bags for the source-separated organic waste, the expected content of plastic in the reject was up to 10% wet weight (in some cases up to 20%). Batch tests for methane potential of the biomass samples showed only minor variations caused by the factors city, pre-treatment technology, dwelling type and season when based on the VS content of the waste (overall average 459 STP m(3)/t VS). The amount of methane generated from 1 t of collected waste was therefore mainly determined by the efficiency of the chosen pre-treatment technology described by the mass distribution of the incoming waste between biomass and reject. (c) 2006 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Waste Management
volume
27
issue
3
pages
398 - 405
publisher
Elsevier
external identifiers
  • wos:000244027700011
  • scopus:33846115773
ISSN
1879-2456
DOI
10.1016/j.wasman.2006.02.014
language
English
LU publication?
yes
id
25913e8a-5ce8-47f5-b939-75a2965415a0 (old id 674878)
date added to LUP
2007-12-12 11:14:51
date last changed
2017-10-22 04:37:03
@article{25913e8a-5ce8-47f5-b939-75a2965415a0,
  abstract     = {Source-sorted municipal organic waste collected from different dwelling types in five Danish cities and pre-treated at three different plants was sampled and characterized several times during one year to investigate the origin of any differences in composition of the pre-treated waste introduced by city, pre-treatment technology, dwelling type or annual season. The investigated pre-treatment technologies were screw press, disc screen and shredder + magnet. The average quantity of pre-treated organic waste (biomass) produced from the incoming waste varied between the investigated pre-treatment technologies: 59%, 66% and 98% wet weight, respectively (41%, 34% and 2% reject, respectively). The pre-treatment technologies showed differences with respect to distribution of the chemical components in the waste between the biomass and the rejected material (reject), especially for dry matter, ash, collection bag material (plastic or paper) and easily degradable organic matter. Furthermore, the particle size of the biomass was related to the pre-treatment technology. The content of plastic in the biomass depended both on the actual collection bag material used in the system and the pre-treatment technology. The sampled reject consisted mostly of organic matter. For cities using plastic bags for the source-separated organic waste, the expected content of plastic in the reject was up to 10% wet weight (in some cases up to 20%). Batch tests for methane potential of the biomass samples showed only minor variations caused by the factors city, pre-treatment technology, dwelling type and season when based on the VS content of the waste (overall average 459 STP m(3)/t VS). The amount of methane generated from 1 t of collected waste was therefore mainly determined by the efficiency of the chosen pre-treatment technology described by the mass distribution of the incoming waste between biomass and reject. (c) 2006 Elsevier Ltd. All rights reserved.},
  author       = {Hansen, Trine Lund and la Cour Jansen, Jes and Davidsson, Åsa and Christensen, Thomas Hojlund},
  issn         = {1879-2456},
  language     = {eng},
  number       = {3},
  pages        = {398--405},
  publisher    = {Elsevier},
  series       = {Waste Management},
  title        = {Effects of pre-treatment technologies on quantity and quality of source-sorted municipal organic waste for biogas recovery},
  url          = {http://dx.doi.org/10.1016/j.wasman.2006.02.014},
  volume       = {27},
  year         = {2007},
}