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Generation of Bio Based Products from OMSW by using a solid-liquid separation and an anaerobic treatment

Kannengießer, Jan and Kuhn, Celina and Stanojkovski, Daniel and Jager, Johannes and Schebek, Liselotte (2018):
Generation of Bio Based Products from OMSW by using a solid-liquid separation and an anaerobic treatment.
Venedig, In: 7th International Symposium on Energy from Biomass and Waste, Venedig, 15.-18.Oktober 2018, [Conference or Workshop Item]

Abstract

The present paper provides an overview of investigations into a new technology, which is able to generate valuable bio-based products by using a liquid phase from organic municipal waste as raw material. For this aim, an existing production process, in which free fatty acids can be enhanced, was extended by one step - the “extractive digestion”. This step should increase the extraction potential of fatty acids from the percolate. For the generation of bio-based products, a solid-liquid-separation has to be made first. After that, to increase the amount of non-polar fatty acids (FA) in the liquid substrate, an anaerobic digestion process should be used. Even after the digestion, most polar FA can be found in the liquid substrate. To increase the amount of non-polar FA futher, another treatment step the “ethanol maturation” is envisaged as a third step. Then the refining process has to be started with the extraction of the FA from the liquid substrate by using a non-polar extraction solvent, like Oleic acid methyl ester (OME). At this stage the new process takes place. According to the old method only a short, punctually extraction could be made. Now, with the “extractive digestion”, the FA can be extracted over a longer periode of time and during the digestion. As a result, the amount of longer-chain fatty acids in the OME increases. After re-extracting the FA from the solvent, a transesterification will be used to produce fatty acid ethyl esters, which can be sold as cleaners or solvents to metal industry for the surface treatment. The production of other bio-based products, like lubricants, fuels or polymers are also possible. The following four different substrates are mainly used for the investigations: 1. a liquid phase from organic municipal waste, produced by a percolation process; 2. fresh percolate from german kitchen waste; 3. different aged percolate from a digestion plant in Germany and 4. young landfill leachate or pressed leachate from municipal solid waste, which was used to imitate african waste.

Item Type: Conference or Workshop Item
Erschienen: 2018
Creators: Kannengießer, Jan and Kuhn, Celina and Stanojkovski, Daniel and Jager, Johannes and Schebek, Liselotte
Title: Generation of Bio Based Products from OMSW by using a solid-liquid separation and an anaerobic treatment
Language: English
Abstract:

The present paper provides an overview of investigations into a new technology, which is able to generate valuable bio-based products by using a liquid phase from organic municipal waste as raw material. For this aim, an existing production process, in which free fatty acids can be enhanced, was extended by one step - the “extractive digestion”. This step should increase the extraction potential of fatty acids from the percolate. For the generation of bio-based products, a solid-liquid-separation has to be made first. After that, to increase the amount of non-polar fatty acids (FA) in the liquid substrate, an anaerobic digestion process should be used. Even after the digestion, most polar FA can be found in the liquid substrate. To increase the amount of non-polar FA futher, another treatment step the “ethanol maturation” is envisaged as a third step. Then the refining process has to be started with the extraction of the FA from the liquid substrate by using a non-polar extraction solvent, like Oleic acid methyl ester (OME). At this stage the new process takes place. According to the old method only a short, punctually extraction could be made. Now, with the “extractive digestion”, the FA can be extracted over a longer periode of time and during the digestion. As a result, the amount of longer-chain fatty acids in the OME increases. After re-extracting the FA from the solvent, a transesterification will be used to produce fatty acid ethyl esters, which can be sold as cleaners or solvents to metal industry for the surface treatment. The production of other bio-based products, like lubricants, fuels or polymers are also possible. The following four different substrates are mainly used for the investigations: 1. a liquid phase from organic municipal waste, produced by a percolation process; 2. fresh percolate from german kitchen waste; 3. different aged percolate from a digestion plant in Germany and 4. young landfill leachate or pressed leachate from municipal solid waste, which was used to imitate african waste.

Place of Publication: Venedig
Uncontrolled Keywords: Carboxylic acids, solid waste, extraction, chain elongation, anaerobic fermentation, bio-based products
Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute IWAR
13 Department of Civil and Environmental Engineering Sciences > Institute IWAR > Material Flow Management and Resource Economy
Event Title: 7th International Symposium on Energy from Biomass and Waste
Event Location: Venedig
Event Dates: 15.-18.Oktober 2018
Date Deposited: 08 May 2019 10:09
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