Sulfate Reduction at pH 5 in a High-Rate Membrane Bioreactor: Reactor Performance and Microbial Community Analyses

2009 ◽  
Author(s):  
Martijn F. M Bijmans
Keyword(s):  
Microbial Community ◽  
Sulfate Reduction ◽  
Membrane Bioreactor ◽  
High Rate ◽  
Reactor Performance ◽  
Microbial Community Analyses

High rate sulfate reduction at pH 6 in a pH-auxostat submerged membrane bioreactor fed with formate

2008 ◽  
Vol 42 (10-11) ◽  
pp. 2439-2448 ◽  
Author(s):  
Martijn F.M. Bijmans ◽  
Tom W.T. Peeters ◽  
Piet N.L. Lens ◽  
Cees J.N. Buisman
Keyword(s):  
Sulfate Reduction ◽  
Membrane Bioreactor ◽  
High Rate ◽  
Submerged Membrane Bioreactor

Biological sulfate removal in an acidogenic bioreactor with an ultrafiltration membrane system

1998 ◽  
Vol 38 (4-5) ◽  
pp. 513-520 ◽  
Author(s):  
O. Mizuno ◽  
H. Takagi ◽  
T. Noike
Keyword(s):  
Sulfate Reduction ◽  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
Volatile Fatty Acids ◽  
Membrane System ◽  
Organic Substrate ◽  
Ultrafiltration Membrane ◽  
Sulfate Concentration ◽  
Sulfate Removal ◽  
Chemostat Reactor

The biological sulfate removal in the acidogenic bioreactor with an ultrafiltration membrane system was investigated at 35°C. Sucrose was used as the sole organic substrate. The sulfate concentration in the substrate ranged from 0 to 600mgS·1−1. The chemostat reactor was operated to compare with the membrane bioreactor. The fouling phenomenon caused by FeS precipitate was observed at higher concentration of sulfate. However, it was possible to continuously operate the membrane bioreactor by cleaning the membrane. The efficiency of sulfate removal by sulfate reduction reached about 100% in the membrane bioreactor, and 55 to 87% of sulfide was removed from the permeate by the membrane filtration. The composition of the metabolite was remarkably changed by the change in sulfate concentration. When the sulfate concentration increased, acetate and 2-proponol significantly increased while n-butyrate and 3-pentanol decreased. The sulfate-reducing bacteria play the role as acetogenic bacteria consuming volatile fatty acids and alcohols as electron donors under sulfate-rich conditions. The results show that the acidogenesis and sulfate reduction simultaneously proceed in the membrane bioreactor.

Sign in / Sign up

Export Citation Format

Share Document