Need for improvements in physical pretreatment of source-separated household food waste.
(2013) In Waste Management: international journal of integrated waste management, science and technology 33(3). p.746-754- Abstract
- The aim of the present study was to investigate the efficiency in physical pretreatment processes of source-separated solid organic household waste. The investigation of seventeen Swedish full-scale pretreatment facilities, currently receiving separately collected food waste from household for subsequent anaerobic digestion, shows that problems with the quality of produced biomass and high maintenance costs are common. Four full-scale physical pretreatment plants, three using screwpress technology and one using dispergation technology, were compared in relation to resource efficiency, losses of nitrogen and potential methane production from biodegradable matter as well as the ratio of unwanted materials in produced biomass intended for wet... (More)
- The aim of the present study was to investigate the efficiency in physical pretreatment processes of source-separated solid organic household waste. The investigation of seventeen Swedish full-scale pretreatment facilities, currently receiving separately collected food waste from household for subsequent anaerobic digestion, shows that problems with the quality of produced biomass and high maintenance costs are common. Four full-scale physical pretreatment plants, three using screwpress technology and one using dispergation technology, were compared in relation to resource efficiency, losses of nitrogen and potential methane production from biodegradable matter as well as the ratio of unwanted materials in produced biomass intended for wet anaerobic digestion. Refuse generated in the processes represent 13-39% of TS in incoming wet waste. The methane yield from these fractions corresponds to 14-36Nm(3)/ton separately collected solid organic household waste. Also, 13-32% of N-tot in incoming food waste is found in refuse. Losses of both biodegradable material and nutrients were larger in the three facilities using screwpress technology compared to the facility using dispersion technology.(1) Thus, there are large potentials for increase of both the methane yield and nutrient recovery from separately collected solid organic household waste through increased efficiency in facilities for physical pretreatment. Improved pretreatment processes could thereby increase the overall environmental benefits from anaerobic digestion as a treatment alternative for solid organic household waste. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2966827
- author
- Bernstad, Anna LU ; Malmquist, L ; Truedsson, C and la Cour Jansen, Jes LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Waste Management: international journal of integrated waste management, science and technology
- volume
- 33
- issue
- 3
- pages
- 746 - 754
- publisher
- Elsevier
- external identifiers
-
- wos:000316515700032
- pmid:22819597
- scopus:84875256868
- pmid:22819597
- ISSN
- 1879-2456
- DOI
- 10.1016/j.wasman.2012.06.012
- language
- English
- LU publication?
- yes
- id
- 59797f0e-1c98-4bf4-b355-00f234d1889b (old id 2966827)
- date added to LUP
- 2016-04-01 10:50:37
- date last changed
- 2023-11-24 19:12:50
@article{59797f0e-1c98-4bf4-b355-00f234d1889b,
abstract = {{The aim of the present study was to investigate the efficiency in physical pretreatment processes of source-separated solid organic household waste. The investigation of seventeen Swedish full-scale pretreatment facilities, currently receiving separately collected food waste from household for subsequent anaerobic digestion, shows that problems with the quality of produced biomass and high maintenance costs are common. Four full-scale physical pretreatment plants, three using screwpress technology and one using dispergation technology, were compared in relation to resource efficiency, losses of nitrogen and potential methane production from biodegradable matter as well as the ratio of unwanted materials in produced biomass intended for wet anaerobic digestion. Refuse generated in the processes represent 13-39% of TS in incoming wet waste. The methane yield from these fractions corresponds to 14-36Nm(3)/ton separately collected solid organic household waste. Also, 13-32% of N-tot in incoming food waste is found in refuse. Losses of both biodegradable material and nutrients were larger in the three facilities using screwpress technology compared to the facility using dispersion technology.(1) Thus, there are large potentials for increase of both the methane yield and nutrient recovery from separately collected solid organic household waste through increased efficiency in facilities for physical pretreatment. Improved pretreatment processes could thereby increase the overall environmental benefits from anaerobic digestion as a treatment alternative for solid organic household waste.}},
author = {{Bernstad, Anna and Malmquist, L and Truedsson, C and la Cour Jansen, Jes}},
issn = {{1879-2456}},
language = {{eng}},
number = {{3}},
pages = {{746--754}},
publisher = {{Elsevier}},
series = {{Waste Management: international journal of integrated waste management, science and technology}},
title = {{Need for improvements in physical pretreatment of source-separated household food waste.}},
url = {{http://dx.doi.org/10.1016/j.wasman.2012.06.012}},
doi = {{10.1016/j.wasman.2012.06.012}},
volume = {{33}},
year = {{2013}},
}