Anaerobic digestion of secondary residuals from an anaerobic bioreactor at a brewery to enhance bioenergy generation

Journal of Industrial Microbiology & Biotechnology
Benjamin T BocherL T Angenent

Abstract

Many beer breweries use high-rate anaerobic digestion (AD) systems to treat their soluble high-strength wastewater. Biogas from these AD systems is used to offset nonrenewable energy utilization in the brewery. With increasing nonrenewable energy costs, interest has mounted to also digest secondary residuals from the high-rate digester effluent, which consists of yeast cells, bacteria, methanogens, and small (hemi)cellulosic particles. Mesophilic (37 degrees C) and thermophilic (55 degrees C) lab-scale, low-rate continuously-stirred anaerobic digestion (CSAD) bioreactors were operated for 258 days by feeding secondary residuals at a volatile solids (VS) concentration of approximately 40 g l(-1). At a hydraulic retention time (HRT) of 15 days and a VS loading rate of 2.7 g VS l(-1) day(-1), the mesophilic bioreactor showed an average specific volumetric biogas production rate of 0.88 l CH4 l(-1) day(-1) and an effluent VS concentration of 22.2 g VS l(-1) (43.0% VS removal efficiency) while the thermophilic bioreactor displayed similar performances. The overall methane yield for both systems was 0.21 l CH4 g(-1) VS fed and 0.47-0.48 l CH4 g(-1) VS removed. A primary limitation of thermophilic digestion of this protein-rich waste ...Continue Reading

References

Jan 1, 1980·Antonie van Leeuwenhoek·W J de Zeeuw, G Lettinga
Jan 1, 1995·Antonie van Leeuwenhoek·G Lettinga
Jun 5, 2002·Water Environment Research : a Research Publication of the Water Environment Federation·Scott R Vandenburgh, Timothy G Ellis
Jun 7, 2005·Journal of Industrial Microbiology & Biotechnology·Jesús Rodríguez-MartínezYolanda Garza-García
Jan 16, 2007·Applied and Environmental Microbiology·Benjamin SteinhausLargus T Angenent
May 2, 2007·Water Environment Research : a Research Publication of the Water Environment Federation·Christopher D MullerJohn T Novak
Nov 21, 2007·Biotechnology and Bioengineering·Rebecca A HoffmannLargus T Angenent
May 1, 1996·World Journal of Microbiology & Biotechnology·W VerstraeteP Lens

❮ Previous
Next ❯

Citations

Dec 3, 2014·Biotechnology Advances·Jian Lin ChenDavid C Stuckey
Dec 31, 2010·Trends in Biotechnology·Matthew T AglerLargus T Angenent
Mar 27, 2009·Water Research·Marcelo L Garcia, Largus T Angenent
Oct 30, 2015·Bioresource Technology·Ornella Sosa-HernándezRoberto Parra-Saldívar
Feb 9, 2016·Environmental Science & Technology·Largus T AngenentHubertus V M Hamelers
Sep 20, 2012·Bioresource Technology·Gregor D ZupančičRomana Marinšek Logar
Jun 10, 2016·Journal of Industrial Microbiology & Biotechnology·Ornella Sosa-HernándezRoberto Parra-Saldívar

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofuels (ASM)

Biofuels are produced through contemporary processes from biomass rather than geological processes involved in fossil fuel formation. Examples include biodiesel, green diesel, biogas, etc. Discover the latest research on biofuels in this feed.