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- Parchami, MohsenHögskolan i Borås,Akademin för textil, teknik och ekonomi (author)
MBR-Assisted VFAs production from excess sewage sludge and food waste slurry for sustainable wastewater treatment
- Article/chapterEnglish2020
Publisher, publication year, extent ...
- MDPI AG,2020
- electronicrdacarrier
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- LIBRIS-ID:oai:DiVA.org:hb-23336
- https://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-23336URI
- https://doi.org/10.3390/APP10082921DOI
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- Language:English
- Summary in:English
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- The significant amount of excess sewage sludge (ESS) generated on a daily basis by wastewater treatment plants (WWTPs) is mainly subjected to biogas production, as for other organic waste streams such as food waste slurry (FWS). However, these organic wastes can be further valorized by production of volatile fatty acids (VFAs) that have various applications such as the application as an external carbon source for the denitrification stage at a WWTP. In this study, an immersed membrane bioreactor set-up was proposed for the stable production and in situ recovery of clarified VFAs from ESS and FWS. The VFAs yields from ESS and FWS reached 0.38 and 0.34 gVFA/gVSadded, respectively, during a three-month operation period without pH control. The average flux during the stable VFAs production phase with the ESS was 5.53 L/m2/h while 16.18 L/m2/h was attained with FWS. Moreover, minimal flux deterioration was observed even during operation at maximum suspended solids concentration of 32 g/L, implying that the membrane bioreactors could potentially guarantee the required volumetric productivities. In addition, the techno-economic assessment of retrofitting the membrane-assisted VFAs production process in an actual WWTP estimated savings of up to 140 €/h for replacing 300 kg/h of methanol with VFAs. © 2020 by the authors.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Industriell bioteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Industrial Biotechnology hsv//eng
- wastewater
- denitrification
- carbon source
- volatile fatty acids
- immersed membrane bioreactor
Added entries (persons, corporate bodies, meetings, titles ...)
- Wainaina, Steven (author)
- Mahboubi, AmirHögskolan i Borås,Akademin för textil, teknik och ekonomi(Swepub:hb)AMSO (author)
- I’Ons, D.Gryaab AB, Norra Fågelrovägen, SE 41834 Gothenburg, Sweden (author)
- Taherzadeh, Mohammad J,1965-Högskolan i Borås,Akademin för textil, teknik och ekonomi(Swepub:hb)MJT (author)
- Högskolan i BoråsAkademin för textil, teknik och ekonomi (creator_code:org_t)
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- In:Applied Sciences: MDPI AG10:82076-3417
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