Oyster shells improve anaerobic dark fermentation performances of food waste: Hydrogen production, acidification performances, and microbial community characteristics

Shi, Zhengui; Zhang, Liang; Yuan, Hairong; Li, Xiujin; Chang, Yanqing; Zuo, Xiaoyu

doi:10.1016/j.biortech.2021.125268

Cited by 39 publications

(16 citation statements)

References 34 publications

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“…VFA concentrations were relatively highest on the 4th day of digester fermentations due to the accumulation of acid in the pre-fermentation period, consistent with Lactobacillus abundances that were highest on the 4th day, followed by subsequent gradual decreases (Table 4). Thus, VFAs likely controlled the abundances of Lactobacillus, consistent with previous studies (Shi et al 2021). pH also concomitantly exhibited apparent effects on the distributions of bacterial groups and was positively correlated with the abundances of Bacteroides and Pseudomonas.…”

Section: Correlations Between Digester Microbial Community Compositio...supporting

confidence: 90%

“…Total solids (TS) and volatile solids (VS) were determined using the drying method, wherein the total solids were dried in an oven at 105°C for 24 h and the volatile solids were burned in a mu e furnace at 550°C for 3 h. Ammonia nitrogen content was determined as previously described (Hu et al 2017), along with volatile fatty acid (VFA) concentration measurements (Shi et al 2021). pH was measured with a pH meter (pHS-2F), and alkalinity content was measured with a potentiometric titrator (ZDJ-4A).…”

Section: Fermentation Physicochemical Propertiesmentioning

confidence: 99%

“…Thus, numerous agricultural biogas digesters have been abandoned in the area and these wasted resources represent a serious problem (Tian et al 2019;Yang et al 2020;Han et al 2020). However, the selection of easily degradable raw materials (Li et al 2020), the fermentation of mixed substrate components (Shi et al 2021) and fermentations with high solid contents (Elmitwalli et al 2004) can adequately reduce environmental condition requirements for fermentation. Further, they can partially compensate for the low gas production rates caused by low temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Anaerobic digestion characteristics and key microorganisms associated with low-temperature rapeseed cake and sheep manure fermentation

Liu

Xiong

et al. 2022

Arch Microbiol

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Qinghai rural household biogas digesters were used to evaluate fermentation characteristics, including gas production and key microbial community changes, associated with low-temperature (15.2-17.8℃) mixed rapeseed cake and sheep manure anaerobic fermentations across 40 days using seven different ratios of material. Different raw material ratios resulted in signi cantly different effects on biogas yields and microbial community compositions. When the ratio of sheep manure to rapeseed cake was 1:2, the highest level of cumulative gas production was observed (122.92 m 3 •t −1 ). Firmicutes, Proteobacteria, Bacteroidetes, and Actinobacteria were the dominant bacterial phyla among the 29 digester samples (total relative abundances > 79.23%), followed by Synergistetes (4.09%-10.7%). Lactobacillus was the most abundant genus in the biogas digesters with high rapeseed cake contents (average relative abundances: 14.68%), while Peptoniphilus exhibited higher abundances (12.69%) in the mixed fermentation digester treatments. In addition, unclassi ed Synergistaceae abundances (6.64%) were positively associated with biogas production variation among treatments. Bacteroides (5.74%) and Pseudomonas (5.24%) both accounted for larger proportions of communities in the digesters that used more sheep manure. Methanomicrobiales (66.55%) was the most dominant archaeal group among digesters, with Methanogenium (41.82%) and Methanoculleus (16.55%) representing the main gas-producing archaeal genera; they were more abundant in biogas digesters with higher sheep manure contents and higher rapeseed cake contents, respectively. Regardless of the raw material ratios, Methanoculleus exhibited the highest abundances on the 4th day of fermentation. VFAs and pH were the main factors associated with differences in microbial communities among the 29 samples. Speci cally, VFA concentrations were positively correlated with Lactobacillus and Methanoculleus abundances, while pH was positively correlated with Bacteroides, Pseudomonas, Methanobrevibacter, and Methanobacterium abundances.

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Section: Correlations Between Digester Microbial Community Compositio...supporting

confidence: 90%

Section: Fermentation Physicochemical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Anaerobic digestion characteristics and key microorganisms associated with low-temperature rapeseed cake and sheep manure fermentation

Liu

Xiong

et al. 2022

Arch Microbiol

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“…Clostridium_sensu_stricto_1 is the main functional bacteriocin in hydrogen-producing fermentations, and it contains Clostridium butyricum and Clostridium paraputrificum, two common hydrogen-producing bacteria found in dark fermentations [26]. Gallicola is often found in hydrogen-producing fermentation systems and is an anaerobic bacterium with poor polysaccharides degradation capacity that occurs with the production of organic acids (acetic acid, butyric acid) and CO 2 [27].…”

Section: Effects Of Ph Adjustment On the Bacterial Community Structurementioning

confidence: 99%

“…Acinetobacter is an anaerobic or partly anaerobic bacterium with cellulose degradation capabilities that rapidly degrades organic matter such as cellulose [41]. Gallicola is often found in hydrogen-producing fermentation systems and is a non-sugar-degrading anaerobic bacterium that occurs with the production of organic acids such as acetic acid, butyric acid and CO 2 [27].…”

Section: Effects Of Ph Adjustment On the Archaeal Community Structurementioning

confidence: 99%

Effects of pH Adjustment on the Release of Carbon Source of Particulate Organic Matter (POM) in Domestic Sewage

et al. 2022

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The use of anaerobic hydrolytic fermentation to develop more available carbon sources from domestic sewage influent particulate organic matter (POM) has received increasing attention. However, the slow hydrolysis rate of POM limits the application of this technology. This study aimed to improve the carbon source release efficiency of POM by pH adjustment and to reveal the hydrolysis mechanism. Results showed that adjusting the initial pH of POM to 3, 9, and 11 enhanced carbon source release in the anaerobic hydrolysis fermentation process of POM. The pretreatment under pH value of 11 contributed to the highest yield and productivity of carbon source, reaching the soluble chemical oxygen demand (SCOD) of 2782 mg/L at the 4th day. The pH 3 pretreatment was more beneficial for phosphorus resource recovery, which contributed to the highest release concentration of PO43−-P, reaching 48.2 mg/L at the 3rd day, accounting for 90% of TP. Microbial community structure analysis indicated that pH 11 preconditioning promoted the enrichment of proteolytic bacteria (Proteocatella and Proteiniclasticum) and polysaccharide hydrolytic bacteria (Trichococcus and Acinetobacter) and inhibited the growth of acetate-consuming methanogenic archaea, which contributed to the highest carbon release of POM in domestic sewage.

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Solid Waste Management and Sustainability in Deltas: Concluding Remarks and Outlook

Nasr

2024

Solid Waste Management in Delta Region for SDGs Fulfillment

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Oyster shells improve anaerobic dark fermentation performances of food waste: Hydrogen production, acidification performances, and microbial community characteristics

Cited by 39 publications

References 34 publications

Anaerobic digestion characteristics and key microorganisms associated with low-temperature rapeseed cake and sheep manure fermentation

Anaerobic digestion characteristics and key microorganisms associated with low-temperature rapeseed cake and sheep manure fermentation

Effects of pH Adjustment on the Release of Carbon Source of Particulate Organic Matter (POM) in Domestic Sewage

Solid Waste Management and Sustainability in Deltas: Concluding Remarks and Outlook

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