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Co-digestion of cultivated microalgae and sewage sludge from municipal waste water treatment
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- Olsson, Jesper, 1975- (author)
- Mälardalens högskola,Akademin för hållbar samhälls- och teknikutveckling,Energy Technology
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- Ma, Shabiimam (author)
- Mälardalens högskola,Akademin för hållbar samhälls- och teknikutveckling,Energy Technology
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- Nehrenheim, Emma (author)
- Mälardalens högskola,Akademin för hållbar samhälls- och teknikutveckling,Energy technology
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- (creator_code:org_t)
- English.
- Other publication (other academic/artistic)
Abstract
Subject headings
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- One way to meet the increased demand for biogas in the society is to use microalgae as substrate. These algae would be cultivated in a treatment step of photobioreactors for reject water from sludge dewatering facilities. In the present study, a co-digestion experiment was established where sludge from a municipal wastewater treatment plant was fermented with harvested microalgae cultivated in lake water from lake Mälaren. The experiment was carried out as a BMP-test (Biochemical Methane Potential) under mesophilic condition (37°C) with fermentation bottles, where 0, 12, 25 and 37%, of the sludge was replaced with harvested microalgae. The results showed that the biogas production was improved with 12% for the bottles with 12% microalgae compared with the bottles with only sludge as a substrate. In the bottles with 25% and 37% microalgaes the gas production was slightly reduced compared with the bottles where only sludge was used.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Miljöbioteknik -- Vattenbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Biotechnology -- Water Treatment (hsv//eng)
Keyword
- biogas production; co-digestion; microalgae cultivation; sludge
- Energy- and Environmental Engineering
- energi- och miljöteknik
Publication and Content Type
- vet (subject category)
- ovr (subject category)
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- Thorin, Eva
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- ENGINEERING AND TECHNOLOGY
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- Mälardalen University
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