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Mat i restavfallet: En undersökning av effektiviteten av matavfallskvarnar

Johansson, Andreas LU (2022) MVEM13 20221
Studies in Environmental Science
Abstract
Food waste has received increased attention due to its negative environmental and economic effects. In Sweden, households account for 71 % of the total amount of generated food waste. A large portion of this food waste is thrown in the residual waste instead of being source-separated, which indicates a need for improved options regarding food waste disposal.
This study aimed to assess how in-sink food waste disposers (FWD) used in households affect the amount of food waste in residual waste and compare this amount with that generated with the conventional food waste bag (FWB) system. Furthermore, the aim was to compare residents' self-perception regarding food waste separation with FWD and FWB.
The study was conducted through an... (More)
Food waste has received increased attention due to its negative environmental and economic effects. In Sweden, households account for 71 % of the total amount of generated food waste. A large portion of this food waste is thrown in the residual waste instead of being source-separated, which indicates a need for improved options regarding food waste disposal.
This study aimed to assess how in-sink food waste disposers (FWD) used in households affect the amount of food waste in residual waste and compare this amount with that generated with the conventional food waste bag (FWB) system. Furthermore, the aim was to compare residents' self-perception regarding food waste separation with FWD and FWB.
The study was conducted through an analysis of residual waste from households in Helsingborg with FWD and FWB. A survey was used to investigate the self-perception of residents.
The results from 2021 showed that the households with FWD threw less food waste in the residual waste and more food waste was sorted with FWD. However, data from 2022 revealed that food waste in the residual waste increased and less was source-separated in the households with FWD, compared to the previous year. Therefore, more studies over longer periods are required. At the time this study was conducted there was not enough data to conclude if the FWD installed in the households in Helsingborg contributes to less food waste in the residual waste and a higher source-separation compared to the FWB system.
Answers from the survey revealed that residents using FWD and FWB estimated that they throw hardly any to no food waste in the residual waste, which indicates that their self-perception disputes the actual outcome. However, due to low participation, the results may be skewed, and further surveys are required to increase the reliability of the results. (Less)
Popular Abstract (Swedish)
I många svenska hem finns den bruna papperspåsen som matavfallet ska slängas i, men hur många gånger har du inte blivit trött på att den droppar och luktar illa? Ibland kan det kännas lättare att slänga matavfallet i restavfallet för att slippa dessa problem, men det är viktigt att matavfallet sorteras ut för miljöns skull. Därför utvecklas tekniker som kan göra det lättare för dig att sortera matavfallet.
I denna studie undersöktes om matavfallskvarnar kan bidra till att mer matavfall sorteras i stället för att det slängs i restavfallet. Detta undersöktes genom att matavfallskvarnar som installerats i hushåll i Helsingborg jämfördes med andra hushåll som använder matavfallspåsar i samma stad. Det visade sig att det slängdes mindre... (More)
I många svenska hem finns den bruna papperspåsen som matavfallet ska slängas i, men hur många gånger har du inte blivit trött på att den droppar och luktar illa? Ibland kan det kännas lättare att slänga matavfallet i restavfallet för att slippa dessa problem, men det är viktigt att matavfallet sorteras ut för miljöns skull. Därför utvecklas tekniker som kan göra det lättare för dig att sortera matavfallet.
I denna studie undersöktes om matavfallskvarnar kan bidra till att mer matavfall sorteras i stället för att det slängs i restavfallet. Detta undersöktes genom att matavfallskvarnar som installerats i hushåll i Helsingborg jämfördes med andra hushåll som använder matavfallspåsar i samma stad. Det visade sig att det slängdes mindre matavfall i restavfallet och sorterades nästan dubbelt så mycket matavfall i hushållen med installerade matavfallskvarnar.
Resultaten baserades dock endast på analyser för år 2021, och det behövs analyser över längre tidsperioder för att kunna utesluta att det inte beror på en tillfällighet. Resultaten från analyserna kan däremot bidra med en översiktsbild och användas med avseende om målen i respektive avfallsplaner uppnås och vilka åtgärder som eventuellt behövs.
Enkäter som skickades ut till boende i de två stadsdelarna i Helsingborg som undersöktes visade att det inte fanns någon skillnad i deras uppfattning om hur mycket matavfall de själva slänger i restavfallet. Oberoende av om de använder matavfallskvarn eller papperspåse anser de flesta att de slänger lite till inget matavfall i restavfallet, trots att analyserna visade att det ändå förekom en del matavfall i restavfallet. Det skulle kunna bero på att de som svarade på enkäten är de som faktiskt sorterar sitt matavfall, medan de som inte sorterar inte var motiverade till att delta i studien.
De boende i båda stadsdelarna uttryckte även att de motiveras till att sortera sitt matavfall på grund av att det känns givande och att de känner ett ansvar. Eftersom resultaten från studien visar att det ändå förekommer matavfall i restavfallet kan det vara bra att i framtiden inkludera de boende i kampanjer där de får ta del av vad som slängs i restavfallet. Detta kan i sin tur få dem att reflektera över hur de hanterar sitt eget avfall. (Less)
Please use this url to cite or link to this publication:
author
Johansson, Andreas LU
supervisor
organization
course
MVEM13 20221
year
type
H2 - Master's Degree (Two Years)
subject
keywords
environment, environmental effects, sustainable development, food waste, food waste disposers, food waste bags, waste, residual waste, source-separation, Swedish households, household, survey
language
Swedish
id
9089496
date added to LUP
2022-07-01 08:47:30
date last changed
2022-07-01 08:47:30
@misc{9089496,
  abstract     = {{Food waste has received increased attention due to its negative environmental and economic effects. In Sweden, households account for 71 % of the total amount of generated food waste. A large portion of this food waste is thrown in the residual waste instead of being source-separated, which indicates a need for improved options regarding food waste disposal.
This study aimed to assess how in-sink food waste disposers (FWD) used in households affect the amount of food waste in residual waste and compare this amount with that generated with the conventional food waste bag (FWB) system. Furthermore, the aim was to compare residents' self-perception regarding food waste separation with FWD and FWB. 
The study was conducted through an analysis of residual waste from households in Helsingborg with FWD and FWB. A survey was used to investigate the self-perception of residents. 
The results from 2021 showed that the households with FWD threw less food waste in the residual waste and more food waste was sorted with FWD. However, data from 2022 revealed that food waste in the residual waste increased and less was source-separated in the households with FWD, compared to the previous year. Therefore, more studies over longer periods are required. At the time this study was conducted there was not enough data to conclude if the FWD installed in the households in Helsingborg contributes to less food waste in the residual waste and a higher source-separation compared to the FWB system. 
Answers from the survey revealed that residents using FWD and FWB estimated that they throw hardly any to no food waste in the residual waste, which indicates that their self-perception disputes the actual outcome. However, due to low participation, the results may be skewed, and further surveys are required to increase the reliability of the results.}},
  author       = {{Johansson, Andreas}},
  language     = {{swe}},
  note         = {{Student Paper}},
  title        = {{Mat i restavfallet: En undersökning av effektiviteten av matavfallskvarnar}},
  year         = {{2022}},
}