Dark fermentation production of volatile fatty acids from glucose with biochar amended biological consortium

Lu, Jia Hsun; Chen, Chuan; Huang, Chihpin; Zhuang, Huichuan; Leu, Shao-Yuan; Lee, Dong Hoon

doi:10.1016/j.biortech.2020.122921

Cited by 19 publications

(9 citation statements)

References 35 publications

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“…were the identified homoacetogens. the consortia of interest partly supported the proposal of Lu et al [11] that homoacetogenesis led to the preferential production of acetate over butyrate in biochar-amended fermentation processes. The above observations suggest that the acid-producers dominated the batch 1, while homoacetogenesis became significant in batch 2.…”

Section: Microbial Community Shiftsupporting

confidence: 52%

“…Figure 5 presents phylogenetic tree, based on clone libraries, that demonstrates that the two identified strains, Clostridium carboxidivorans and Clostridium drakei, which belong to Clostridium sensu stricto 5 sp., are homoacetogens. Lu et al [11] noted that in their biochar-amended fermentation test, the microbial consortium preferentially yielded acetate over butyrate at the expense of the production of H 2 and CO 2 . These authors proposed direct interspecies electron transfer (DIET) between acid producers and the homoacetogens.…”

Section: Microbial Community Shiftmentioning

confidence: 99%

“…Lu et al [11] added nine biochars to a microbial consortium and noted that biochars with excess functional groups and high crystallinity would lead to the preferential production of acetate over butyrate at the expense of the production of H 2 and CO 2 . The authors posited that homoacetogenesis was effective in the fermenting consortium as the biochar acted as an electron conductor for interspecies electron transfer between the acid producers and the homoacetogens.…”

Section: Introductionmentioning

confidence: 99%

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Glucose fermentation with biochar-amended consortium: microbial consortium shift

Chen

Huang

et al. 2020

Bioengineered

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The effects of adding biochar rice husk (R), white popinee (WP), bamboo (BB), or coconut (CT) on microbial community in fermentation broths from glucose were investigated. The added biochars acted as biofilm carriers on which Sporolactobacillus spathodeae, Clostridium sensu stricto 11 sp., Clostridium sensu stricto 12 sp., Clostridium sensu stricto 1 sp., and Clostridium sensu stricto 5 sp. were enriched. Fermentation reactions substantially increased the amounts of acid-producers in biofilm. The homoacetogens, Clostridium carboxidivorans and Clostridium drakei, were identified in the biofilm in the first two batches of fermentation with biochars as electron conductors between acid-producers and homoacetogens to assist homoacetogenesis. The heterotrophic bacteria overcompeted the acid-producers in the biofilm in long-term fermentation. ARTICLE HISTORY

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Section: Microbial Community Shiftsupporting

confidence: 52%

Section: Microbial Community Shiftmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Glucose fermentation with biochar-amended consortium: microbial consortium shift

Chen

Huang

et al. 2020

Bioengineered

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“…An increase in adsorption capacity can be achieved through the addition of electrolytes, which will further increase the hydrophobicity of the cell surface due to the combination of metals on the cell membrane and certain compounds. High crystallinity on the surface of biochar is conducive to the formation of biofilms and electron transfer 47 . The biofilm can create an internal protective environment for microbial cells owing to its complex three‐dimensional structure, which would enhance the cells’ tolerance to adverse environmental stress 48 .…”

Section: Application Of Polymer Carrier Materials In the Field Of Biological Fermentationmentioning

confidence: 99%

“…The DIET mechanism of biochar would diminish when the biofilm was overdeveloped 50 . In recent years, activated carbon and biochar have received more attention because of the function of DIET 47,50 . However, the mechanism of DIET still need to be elaborated in the future.…”

Section: Application Of Polymer Carrier Materials In the Field Of Biological Fermentationmentioning

confidence: 99%

Material‐mediated cell immobilization technology in the biological fermentation proces

Gao

Jiang

et al. 2021

Biofuels Bioprod Bioref

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Cell immobilization technology has shown much potential in the field of biological fermentation owing to its simple operation, maintenance of long‐term cell viability, repeatability, good stability, and high tolerance. Compared with free‐cell fermentation, immobilized cells show strong growth and metabolism performance in complex environments, such as environments with low pH, or with high concentrations of substrate and product. The metabolic properties of immobilized cells mainly depend on the carrier materials. In recent years, polymer membrane materials have attracted much attention because of their good mechanical properties and flexible support structure. In addition to improving the activity and stability of immobilized cells, biocompatibility modification can also be carried out on the surface of the carrier, which can reduce specific non‐biological interactions between the cells and the carrier. In this review, current advances in cell immobilization using different materials in the field of biological fermentation are reviewed. Perspectives on immobilized cells and the challenges associated with them in the field of biological fermentation are also addressed. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

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Biochar promotes methane production during anaerobic digestion of organic waste

et al. 2021

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Climate change and energy demand are calling more sustainable fuels such as biomethane produced by anaerobic digestion of organic waste. Biochar addition to waste is presumed to enhance the e ciency of methane production, yet individual reports disclose contradictory results. Therefore, we performed a meta-analysis of 27 selected publications containing 156 paired measurements of control and biocharamended treatments to assess the impact of biochar on methanogenic performance. Results show that biochar promotes biomethane production substantially with a high Hedge's d value of 5.7 ± 1.04, yet sporadic publications report a methane decline. Methanogenic performance is statistically controlled by feedstock type, pyrolysis temperature and biochar concentration, but not controlled by pH, size, surface area and methanogen species. Our ndings should help to tune the parameters of anaerobic digestion with biochar to optimize biomethane productions.

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Dark fermentation production of volatile fatty acids from glucose with biochar amended biological consortium

Cited by 19 publications

References 35 publications

Glucose fermentation with biochar-amended consortium: microbial consortium shift

Glucose fermentation with biochar-amended consortium: microbial consortium shift

Material‐mediated cell immobilization technology in the biological fermentation proces

Biochar promotes methane production during anaerobic digestion of organic waste

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