Managing methanogens and homoacetogens to promote reductive dechlorination of trichloroethene with direct delivery of H2 in a membrane biofilm reactor

2012 ◽  
Vol 109 (9) ◽  
pp. 2200-2210 ◽  
Author(s):  
Michal Ziv-El ◽  
Sudeep C. Popat ◽  
Katherine Cai ◽  
Rolf U. Halden ◽  
Rosa Krajmalnik-Brown ◽  
...  
Keyword(s):  
Reductive Dechlorination ◽  
Biofilm Reactor ◽  
Membrane Biofilm Reactor ◽  
Direct Delivery

Direct delivery of CO 2 into a hydrogen-based membrane biofilm reactor and model development

2016 ◽  
Vol 290 ◽  
pp. 154-160 ◽  
Author(s):  
Siqing Xia ◽  
Xiaoyin Xu ◽  
Chen Zhou ◽  
Chenhui Wang ◽  
Lijie Zhou ◽  
...  
Keyword(s):  
Model Development ◽  
Biofilm Reactor ◽  
Membrane Biofilm Reactor ◽  
Direct Delivery

A membrane biofilm reactor achieves aerobic methane oxidation coupled to denitrification (AME-D) with high efficiency

2008 ◽  
Vol 58 (1) ◽  
pp. 83-87 ◽  
Author(s):  
O. Modin ◽  
K. Fukushi ◽  
F. Nakajima ◽  
K. Yamamoto
Keyword(s):  
Methane Oxidation ◽  
High Efficiency ◽  
Biofilm Reactor ◽  
Practical Application ◽  
Suspended Culture ◽  
Consumption Ratio ◽  
Membrane Biofilm Reactor ◽  
Nitrate Consumption ◽  
Attached Culture ◽  
Aerobic Methanotrophs

Methane would potentially be an inexpensive, widely available electron donor for denitrification of wastewaters poor in organics. Currently, no methanotrophic microbe is known to denitrify. However, aerobic methane oxidation coupled to denitrification (AME-D) has been observed in several laboratory studies. In the AME-D process, aerobic methanotrophs oxidise methane and release organic metabolites and lysis products, which are used by coexisting denitrifiers as electron donors for denitrification. Due to the presence of oxygen, the denitrification efficiency in terms of methane-to-nitrate consumption is usually low. To improve this efficiency the use of a membrane biofilm reactor was investigated. The denitrification efficiency of an AME-D culture in (1) a suspended growth reactor, and (2) a membrane biofilm reactor was studied. The methane-to-nitrate consumption ratio for the suspended culture was 8.7. For the membrane-attached culture the ratio was 2.2. The results clearly indicated that the membrane-attached biofilm was superior to the suspended culture in terms of denitrification efficiency. This study showed that for practical application of the AME-D process, focus should be placed on development of a biofilm reactor.

New insight into CO2-mediated denitrification process in H2-based membrane biofilm reactor: An experimental and modeling study

2020 ◽  
Vol 184 ◽  
pp. 116177 ◽  
Author(s):  
Minmin Jiang ◽  
Junjian Zheng ◽  
Patricia Perez-Calleja ◽  
Cristian Picioreanu ◽  
Hua Lin ◽  
...  
Keyword(s):  
Biofilm Reactor ◽  
Membrane Biofilm Reactor ◽  
Insight Into ◽  
Denitrification Process ◽  
Modeling Study
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