Conversion of syngas (CO and H2) to biochemicals by mixed culture fermentation in mesophilic and thermophilic hollow-fiber membrane biofilm reactors

Shen, Nan; Keino, Dai; Xia, Xiu-Yang; Zeng, Raymond J.; Zhang, Fang

doi:10.1016/j.jclepro.2018.08.162

Cited by 68 publications

(35 citation statements)

References 36 publications

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“…Some patterns observed in this study are reinforced by the results of other MBfR studies. The maximum concentration of acetate was obtained when other metabolites were zero or negligible, same as Shen et al (2018) with the highest reported acetate concentration as 27.9 g/L (930 mM C). Similarly, long HRTs promoted MCE, with the longest carboxylate reported being 8‐C octanoate (up to 0.77 g/L), which was achieved in batch mode at 35°C (Zhang, Ding, Zhang, et al, 2013).…”

Section: Resultssupporting

confidence: 74%

“…The MBfR has been widely used to achieve microbial reduction of a broad spectrum of oxidized water pollutants (Van Ginkel et al, 2010; Lai et al, 2016; Martin & Nerenberg, 2012; Zhou et al, 2014), but its application as a production system is relatively new. Ten recent studies (Chen & Ni, 2016; Shen et al, 2014, 2018; Wang et al, 2017; Wang, Dai, Wang, et al, 2018; Wang, Dai, Xia, et al, 2018; Wang, Zhang, Zhang, et al, 2018; Yasin et al, 2014; Zhang, Ding, Shen, et al, 2013; Zhang, Ding, Zhang, et al, 2013) demonstrated the production of carboxylates in MBfRs from mixtures of H 2 , CO, and CO 2 , at different concentrations. We compiled these studies in Table S1, where half of the studies used an H 2 /CO 2 gas mixture.…”

Section: Introductionmentioning

confidence: 99%

“…Production rate and titer have been related to mass‐transfer aspects, such as membrane porosity when advective membranes are used, and higher rates and titers were associated with smaller pore sizes (Wang, Dai, Wang, et al, 2018). Carboxylates longer than two carbons usually were more important in reactors with longer HRTs (HRT > 1 day; Chen & Ni, 2016; Wang et al, 2017; Zhang, Ding, Zhang, et al, 2013) and temperatures lower than 35°C (Wang et al, 2017; Wang, Dai, Wang, et al, 2018), and Clostridium was the main bacteria reported in mesophilic MBfRs (Shen et al, 2018; Wang, Dai, Wang, et al, 2018; Zhang, Ding, Shen, et al, 2013; Zhang, Ding, Zhang, et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Carboxylates and alcohols production in an autotrophic hydrogen‐based membrane biofilm reactor

Calvo

Ontiveros‐Valencia

Krajmalnik‐Brown

et al. 2021

Biotech & Bioengineering

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Microbiological conversion of CO 2 into biofuels and/or organic industrial feedstock is an excellent carbon-cycling strategy. Here, autotrophic anaerobic bacteria in the membrane biofilm reactor (MBfR) transferred electrons from hydrogen gas (H 2 ) to inorganic carbon (IC) and produced organic acids and alcohols. We systematically varied the H 2 -delivery, the IC concentration, and the hydraulic retention time in the MBfR. The relative availability of H 2 versus IC was the determining factor for enabling microbial chain elongation (MCE). When the H 2 :IC mole ratio was high (>2.0 mol H 2 /mol C), MCE was an important process, generating medium-chain carboxylates up to octanoate (C8, 9.1 ± 1.3 mM C and 28.Conversely, products with two carbons were the only ones present when the H 2 :IC ratio was low (<2.0 mol H 2 /mol C), so that H 2 was the limiting factor. The biofilm microbial community was enriched in phylotypes most similar to the well-known acetogen Acetobacterium for all conditions tested, but phylotypes closely related with families capable of MCE (e.g., Bacteroidales, Rhodocyclaceae, Alcaligenaceae, Thermoanaerobacteriales, and Erysipelotrichaceae) became important when the H 2 :IC ratio was high. Thus, proper management of IC availability and H 2 supply allowed control over community structure and function, reflected by the chain length of the carboxylates and alcohols produced in the MBfR.

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Section: Resultssupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Carboxylates and alcohols production in an autotrophic hydrogen‐based membrane biofilm reactor

Calvo

Ontiveros‐Valencia

Krajmalnik‐Brown

et al. 2021

Biotech & Bioengineering

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“…Operational conditions tested include membrane interfacial area, syngas composition, continuous or batch liquid operation mode, temperature, and pH. Shen et al [52] investigated the conversion of CO/H 2 (40:60) by mixed culture in a closed-end HFM biofilm reactor by varying the: membrane surface area, liquid operation mode, and temperature. The main products obtained for a sequential batch experiment at 35 C were: acetate, butyrate, hexanoate, and octanoate.…”

Section: Mixed Culturesmentioning

confidence: 99%

Membrane bioreactors for syngas permeation and fermentation

Elisiário

Wever

Hecke

et al. 2021

Critical Reviews in Biotechnology

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Syngas fermentation to biofuels and chemicals is an emerging technology in the biobased economy. Mass transfer is usually limiting the syngas fermentation rate, due to the low aqueous solubilities of the gaseous substrates. Membrane bioreactors, as efficient gas-liquid contactors, are a promising configuration for overcoming this gas-to-liquid mass transfer limitation, so that sufficient productivity can be achieved. We summarize the published performances of these reactors. Moreover, we highlight numerous parameters settings that need to be used for the enhancement of membrane bioreactor performance. To facilitate this enhancement, we relate mass transfer and other performance indicators to the type of membrane material, module, and flow configuration. Hollow fiber modules with dense or asymmetric membranes on which biofilm might form seem suitable. A model-based approach is advocated to optimize their performance.

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“…The medium in that study was supplemented with vitamins. Besides, a hollow fibre membrane biofilm reactors has been found to produce acetate (4.22 g/L), butyrate (1.35 g/L), caproate (0.88 g/L) and caprylate (0.52 g/l) at 35 o C, but no alcohols were detected (Shen et al, 2018). Modulating the partial pressure composition, i.e.…”

Section: Introductionmentioning

confidence: 99%

Biovalorisation of liquid and gaseous effluents of oil refinery and petrochemical industry

Chakraborty¹

2021

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The simultaneous removal of phenol and selenite from synthetic wastewater was investigated by adopting two different co-culturing techniques using the fungus Phanerochaete chrysosporium and the bacterium Delftia lacustris. Separately grown biomass of the fungus and the bacterium (suspended co-culture) was incubated with different concentrations of phenol (0-1200 mg/L) and selenite (10 mg/L). The selenite ions were biologically reduced to extracellular Se(0) nanoparticles (3.58 nm diameter) with the simultaneous degradation of up to 800 mg/L of phenol. Upon growing the fungus and the bacterium together using an attached growth co-culture, the bacterium grew as a biofilm onto the fungus. The extracellularly produced Se(0) in the attached growth co-culture had a minimum diameter of 58.5 nm. This co-culture was able to degrade completely 50 mg/L phenol, but was completely inhibited at a phenol concentration of 200 mg/L.

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Conversion of syngas (CO and H2) to biochemicals by mixed culture fermentation in mesophilic and thermophilic hollow-fiber membrane biofilm reactors

Cited by 68 publications

References 36 publications

Carboxylates and alcohols production in an autotrophic hydrogen‐based membrane biofilm reactor

Carboxylates and alcohols production in an autotrophic hydrogen‐based membrane biofilm reactor

Membrane bioreactors for syngas permeation and fermentation

Biovalorisation of liquid and gaseous effluents of oil refinery and petrochemical industry

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