Modeling methane production in anaerobic forward osmosis bioreactor using a modified anaerobic digestion model No. 1
- Publication Type:
- Journal Article
- Bioresource Technology, 2018, 264 pp. 211 - 218
- Issue Date:
|SKim-AnFOMBR-BITE-CESE2017 v0.9.docx||Accepted Manuscript Version||1.44 MB|
|Modeling methane production in anaerobic forward osmosis bioreactor using a modified anaerobic 7-main.pdf||Published Version||1.29 MB|
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© 2018 Elsevier Ltd Anaerobic membrane bioreactor (AnMBR) using microfiltration (MF) or ultrafiltration (UF) membranes was introduced to enhance poor biomass retention of conventional anaerobic digestion (CAD). Recently, forward osmosis (FO) membrane have been applied to AnMBR, which is called AnFOMBR. FO membrane assures not only high biomass retention but also high removal efficiency for low molecular weight (LMW) matters. Methane production rates in CAD, AnMBR, and AnFOMBR were compared using a modified IWA anaerobic digestion model No. 1 (ADM1) in this work. Accumulation of biomass in AnMBR/AnFOMBR results in enhanced biochemical reaction and gains more methane production. AnFOMBR may experience a significant inhibition by accumulated free ammonia and cations, although concentrated soluble substrates rejected by FO membrane are favorable for more methane production. Rejection rate of inorganic nitrogen is a key parameter to determine the inhibition in methane production of AnFOMBR.
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