Interactions between substrate characteristics and microbial communities on biogas production yield and rate

Lee, Jongkeun; Hong, Jeongseop; Jeong, Seulki; Chandran, Kartik; Park, Ki Young

doi:10.1016/j.biortech.2020.122934

Cited by 33 publications

(11 citation statements)

References 41 publications

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“…This is a value found to be within the range recommended by Al Seadi et al (2013), in the production of biogas which is 16 to 45 for efficient digester performance [31]. If this ratio is high the nitrogen is rapidly consumed and biogas production decreases and if low, inhibitors such as ammonia and volatile fatty acids can accumulate [32]. The C/N ratio for Sargassum was determined to be within this range for biogas production (Table 1) and this was shown in previous studies [33].…”

Section: Ultimate Analysissupporting

confidence: 57%

Volatile Compounds of Algal Biomass Pyrolysis

López-Aguilar

Quiroz-Cardoza

Pérez-Hernández

2022

JMSE

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The use and transformation of biomass into highly valuable products is a key element in circular economy models. The purpose of this research was to characterise the volatile compounds and the temperature at which they are emitted during the thermal decomposition by pyrolysis of algal biomass while looking at three different types: (A1) endemic microalgae consortium, (A2) photobioreactor microalgae consortium and (A3) Caribbean macroalgae consortium. Furthermore, the ultimate (CHON) and proximate (humidity, volatile solids and ashes) compositions of the algal biomass were determined. Some volatile species were identified as having potential industrial interest for use as precursors and intermediaries, such as commercially used aromatic compounds which if not suitably managed can be harmful to our health and the environment. It is concluded that the pyrolysis of algal biomass shows potential for the generation of valuable products. The information generated is useful, especially the temperature at which volatility occurs, in order to access the valuable compounds offered by the algal biomasses, and under the concept of biorefinery convert the issue of biomass disposal into a sustainable source of raw materials.

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Section: Ultimate Analysissupporting

confidence: 57%

Volatile Compounds of Algal Biomass Pyrolysis

López-Aguilar

Quiroz-Cardoza

Pérez-Hernández

2022

JMSE

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“…When this ratio is very high, the nitrogen is consumed quickly, and biogas production decreases. If the ratio is below 15, inhibitors can accumulate, such as ammonia and volatile fatty acids [52]. Furthermore, it was discovered that out-of-range values such as a 50/1 ratio were also suitable for AD [53].…”

Section: Characterisation Of Materialsmentioning

confidence: 99%

Lag Phase in the Anaerobic Co-Digestion of Sargassum spp. and Organic Domestic Waste

López-Aguilar,

Morales-Durán,

Quiroz-Cardoza

et al. 2023

Energies

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The mass arrival of pelagic sargassum is an international issue that is currently taking its toll on the economic activity of affected regions by causing a significant reduction in investment and tourism. The purpose of this work was to evaluate the Logistic Modified and Gompertz Modified sigmoid kinetic models for describing the lag phase in the generation of biomethane. The case studies were: anaerobic co-digestion (ACoD) of Sargassum spp./domestic organic waste and Sargassum spp. in mono-digestion. The experimental method, based on biochemical methane potential (BMP), enabled kinetic models to be built for methane production under environmental conditions and an estimate to be made for the duration of the lag phase. The maximum cumulative production determined for monodigestion was 140.7 cm3 of CH4/g SV at 99 days, and for ACoD, it was 161.3 cm3 of CH4/g SV at 172 days. The lag phase was determined to be approximately 7 days and 93 days, respectively. It was concluded that the modified sigmoid growth functions are a valuable tool for studying the start-up and scaling of systems for the ACoD of organic waste. The results present the ACoD of coastal pelagic sargassum algae and domestic organic waste as a potential alternative energy source.

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“…The specific primer set, Arch519F (5 -CAGCCGCCGCGGTAA-3 ) and Arch934R (5 -GTGCTCCCCCGCCAATTC-3 ), was used to detect the methanogen species [35]. Illumina library generation methods were subsequently used to generate DNA sequences [36] and conducted by ChunLab, Inc. (Seoul, Korea) using an Illumina/MiSeq platform (San Diego, CA, USA) following the protocol specified by the manufacturer. Sequence similarity was analyzed using the EzBioCloud server (www.ezbiocloud.net, accessed on 10 September 2020) for species level identification (97% cutoff).…”

Section: Methodsmentioning

confidence: 99%

Impact of Attrition Ball-Mill on Characteristics and Biochemical Methane Potential of Food Waste

Park

et al. 2021

Energies

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The impact of attrition ball-mill pretreatment on food waste particle size, soluble chemical oxygen demand (SCOD), biochemical methane potential, and microbial community during anaerobic digestion was investigated based on milling speed and time. The uniformity of particle size improved with increasing milling speed and time. The SCOD of the pretreated samples increased to 4%, 7%, and 17% at the speeds of 150, 225, and 300 rpm, respectively, compared to the control. Milling time did not significantly change the SCOD. The cumulative methane productions of 430, 440, and 490 mL/g-VS were observed at the speeds of 150, 225, and 300 rpm, respectively, while the untreated sample exhibited the cumulative methane production of 390 mL/g-VS. Extended milling time did not improve methane production much. When the milling times of 10, 20, and 30 min were applied with the milling speed fixed at 300 rpm, the methane productions of 490, 510, and 500 mL/g-VS were observed respectively. Ball-mill pretreatment also increased the total volatile fatty acids. During the anaerobic digestion (AD) of ball-mill treated food waste, acetoclastic methanogens predominated, with a relative abundance of 48–49%. Interestingly, hydrogenotrophic methanogens were 1.6 times higher in the pretreated samples than those in the control. These results showed the potential of attrition ball milling as a food waste pretreatment for improving methane production.

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Interactions between substrate characteristics and microbial communities on biogas production yield and rate

Cited by 33 publications

References 41 publications

Volatile Compounds of Algal Biomass Pyrolysis

Volatile Compounds of Algal Biomass Pyrolysis

Lag Phase in the Anaerobic Co-Digestion of Sargassum spp. and Organic Domestic Waste

Impact of Attrition Ball-Mill on Characteristics and Biochemical Methane Potential of Food Waste

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