Enhanced methane production in an anaerobic digestion and microbial electrolysis cell coupled system with co-cultivation of Geobacter and Methanosarcina

Yin, Qi; Zhu, Xiaoyu; Zhan, Guoqiang; Tao, Bo; Yang, Yanfei; Tao, Yong; He, Xiaohong; Li, Daping; Yan, Zhiying

doi:10.1016/j.jes.2015.07.006

Cited by 102 publications

(27 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The Geobacter genus exhibited high relative abundance above 1.9% at the start-up period and decreased below 0.01% at the steady-state and overloading operation, however, its population increased during the recovery period from 0.82% to 1.49%. Geobacter was reported to coexist with methanogens and play an essential role in electron transfer during the reduction of carbon dioxide to methane [ 55 ].…”

Section: Discussionmentioning

confidence: 99%

Characterization and Dynamic Shift of Microbial Communities during Start-Up, Overloading and Steady-State in an Anaerobic Membrane Bioreactor

Vincent

Wei

Zhang

et al. 2018

IJERPH

View full text Add to dashboard Cite

A lab-scale anaerobic membrane bioreactor (AnMBR) with a side stream tubular membrane was developed to treat synthetic domestic sewage to evaluate its performance and the dynamic shift of bacterial and archaeal communities during the start-up, steady-state, overloading and recovery periods of operation at mesophilic temperatures. During the start-up period, the bacterial and archaeal communities changed drastically, and Proteobacteria and Bacteroidetes predominated. During the steady-state period, the AnMBR exhibited excellent COD removal above 91%, and COD of the effluent was below 50 mg/L. High-throughput sequencing analysis results revealed that bacterial and archaeal communities shifted significantly from the start-up to the steady-state period, and that the Proteobacteria phylum predominated on days 140, 162 and 190, and the archaea community hydrogenotrophic methanogen genus Methanolinea (1.5–6.64%) predominated over the aceticlastic methanogen genus Methanothrix (1.35–3.07%). During the overloading period, significant changes occurred in microbial community on day 210, e.g., the phyla Bacteroidetes (30%), Proteobacteria (23%) and Firmicutes (18%) predominated and the archaeal community was completely suppressed, and Methanobrevibacter (0.7%) was the only methanogen genus that emerged in the overloading period. After a shock loading period, the microbial communities exhibited significant changes within the ranks of methanogens and shifted to dominance of the aceticlastic methanogen pathway. In addition, the TVFAs to alkalinity ratio in this study was suitable as an indicator of monitoring performance in the AnMBR operation.

show abstract

Section: Discussionmentioning

confidence: 99%

Characterization and Dynamic Shift of Microbial Communities during Start-Up, Overloading and Steady-State in an Anaerobic Membrane Bioreactor

Vincent

Wei

Zhang

et al. 2018

IJERPH

View full text Add to dashboard Cite

show abstract

“…Among them, AD technology, as it enhances methane production increasing the overall efficiency of the process. Several works have reported an increase of the methane yield and/or a better decomposition of complex substrates when coupling BES to anaerobic digesters [31,32,72,80,109,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158]. However, de Vrieze et al attributed those improvements to an increase of biomass retention on the electrodes, rather than electrochemical interaction [159].…”

Section: Applications Of Electromethanogenesismentioning

confidence: 99%

On the Edge of Research and Technological Application: A Critical Review of Electromethanogenesis

Blasco-Gómez

Batlle-Vilanova

Villano

et al. 2017

IJMS

172

103

View full text Add to dashboard Cite

The conversion of electrical current into methane (electromethanogenesis) by microbes represents one of the most promising applications of bioelectrochemical systems (BES). Electromethanogenesis provides a novel approach to waste treatment, carbon dioxide fixation and renewable energy storage into a chemically stable compound, such as methane. This has become an important area of research since it was first described, attracting different research groups worldwide. Basics of the process such as microorganisms involved and main reactions are now much better understood, and recent advances in BES configuration and electrode materials in lab-scale enhance the interest in this technology. However, there are still some gaps that need to be filled to move towards its application. Side reactions or scaling-up issues are clearly among the main challenges that need to be overcome to its further development. This review summarizes the recent advances made in the field of electromethanogenesis to address the main future challenges and opportunities of this novel process. In addition, the present fundamental knowledge is critically reviewed and some insights are provided to identify potential niche applications and help researchers to overcome current technological boundaries.

show abstract

“…An alternative configuration to electromethanogenic MECs, by inserting electrodes in the AD reactor and applying a potential, allows for the in situ biogas upgrading, reporting an increase in methane yield [26,[35][36][37]. An increase of 59.7% in methane yield was achieved in a AD-MEC coupled system compared to the AD alone [38]. MECs for CO 2 conversion to methane have been operated mainly with synthetic medium [39,40] and there is a lack of studies with real high strength wastewater fed for the anode compartment.…”

Section: mentioning

confidence: 99%

Anaerobic digestion and electromethanogenic microbial electrolysis cell integrated system: Increased stability and recovery of ammonia and methane

2018

View full text Add to dashboard Cite

show abstract

Enhanced methane production in an anaerobic digestion and microbial electrolysis cell coupled system with co-cultivation of Geobacter and Methanosarcina

Cited by 102 publications

References 24 publications

Characterization and Dynamic Shift of Microbial Communities during Start-Up, Overloading and Steady-State in an Anaerobic Membrane Bioreactor

Characterization and Dynamic Shift of Microbial Communities during Start-Up, Overloading and Steady-State in an Anaerobic Membrane Bioreactor

On the Edge of Research and Technological Application: A Critical Review of Electromethanogenesis

Anaerobic digestion and electromethanogenic microbial electrolysis cell integrated system: Increased stability and recovery of ammonia and methane

Contact Info

Product

Resources

About