High solid mono-digestion and co-digestion performance of food waste and sewage sludge by a thermophilic anaerobic membrane bioreactor

Li, Yu You; Cheng, Hui; Guo, Guangze; Zhang, Tao; Qin, Yu

doi:10.1016/j.biortech.2020.123433

Cited by 42 publications

(11 citation statements)

References 40 publications

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“…Out of 326 studies, 65 were obtained after screening, yielding 432 relevant AcoD data sets for meta-analysis and modeling, grouped according to their mono-digestion control, including the: (1) AM compared to AcoD of ruminant manure AM(RM):LB, − pig manure AM(PM):LB, chicken manure AM(CM):LB, AM:FW, ,− AM:slaughterhouse waste (SL), , AM:desugared molasses (MO), and AM:algae (AL); (2) LB mono-digestion compared to LB:AM(RM), ,,, LB:AM(PM), ,− LB:AM(CM), ,,, LB:FW, , LB:MO, and LB:SS; (3) SS mono-digestion to SS:fats, oils, grease (FOG), − SS:FW, − SS:AL, − SS:LB, , SS:high-carbon liquid substrate (L-C), and SS:glycerin (Gly); and (4) FW mono-digestion compared to FW:AM, ,, FW:LB, ,,− FW:SS, ,,,,, FW:high-nitrogen liquid substrate (L-N); as well as additional data sets ,…”

Section: Methodsmentioning

confidence: 99%

Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

Chuenchart,

Surendra,

Khanal

2024

ACS EST Eng.

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Anaerobic co-digestion (AcoD) is becoming increasingly popular in the biogas industry for its numerous advantages over mono-digestion, including balanced nutrient profiles, enhanced process stability, synergistic methane production, and reduced greenhouse gas emissions. However, varying results across AcoD studies highlight the need for an extensive meta-analysis of a large data set to better understand these synergies. Here, we compared methane yields from 432 data sets, based on the ratio of means, from AcoD and mono-digestion. The relative synergistic index (RSI) revealed synergistic effects in AcoD of lignocellulosic biomass with animal manures, particularly pig (RSI = 1.91) and chicken manures (RSI = 1.71). Due to its rapid biodegradability, food waste AcoD also demonstrated synergistic effects with both animal manures (RSI = 1.28) and lignocellulosic biomass (RSI = 1.41). After regrouping data by high-carbon cosubstrates, interpretable machine learning models identified temperature, which accelerates the hydrolysis of lignocellulosic biomass and emulsification of fats, oils, and grease, as the key factor influencing methane yield. Furthermore, experimental validation using food waste and sewage sludge co-digestion confirmed the superiority of multivariable linear regression in predicting specific methane yield over other models in terms of simplicity and efficiency.

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Section: Methodsmentioning

confidence: 99%

Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

Chuenchart,

Surendra,

Khanal

2024

ACS EST Eng.

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“…Jin et al (2021) noted that AcoD helps manage a FW substrate with a C/N of ≤20, and a poor concentration of microelements would be unfavorable to the digestion process. However, in the absence of an optimal substrate mixing ratio, especially without considering the carbohydrate content, which is the largest resource for CH4 production, AcoD of FW can negatively affect the biogas production rate (Li et al, 2020).…”

Section: Anaerobic Co-digestion (Acod) Of Food Waste With Other Subst...mentioning

confidence: 99%

“…For example, a high solid thermophilic anaerobic membrane bioreactor with the help of membrane filtration demonstrates excellent efficiency in the removal of total solids, COD, and H2S for both mono-digestion and AcoD of FW and sludge (Li et al, 2020).…”

Section: Emerging Reactor's Design Deployed For Ch4 Productionmentioning

confidence: 99%

Advancing the bioconversion process of food waste into methane: A systematic review

et al. 2023

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“…Anaerobic co‐digestion (AcoD) of WAS and OKW has been successfully utilized to prevent acidification and digester failure, enhance the specific methane yield (SMY), improve system stability and enable higher applied organic loading rates (OLR app ) 5 . AcoD of WAS and OKW has been effectively conducted within mesophilic and thermophilic temperature ranges (35 and 55 °C, respectively) 6‐11 . However, there are limited studies of AcoD involving different wastes at low (psychrophilic) temperatures (<25 °C) 12 .…”

Section: Introductionmentioning

confidence: 99%

“…5 AcoD of WAS and OKW has been effectively conducted within mesophilic and thermophilic temperature ranges (35 and 55 °C, respectively). [6][7][8][9][10][11] However, there are limited studies of AcoD involving different wastes at low (psychrophilic) temperatures (<25 °C) 12 . To the best of the researchers' knowledge, there are no reports on AcoD of WAS and OKW at low temperature, except for standardized biochemical methane potential (BMP) tests, and no reports under realistic operational conditions (continuous feeding mode).…”

Section: Introductionmentioning

confidence: 99%

Enhancing kitchen waste minimization and energy generation at 20 °C: a psychrophilic anaerobic co‐digestion study

Esparza‐Soto,

Alcaraz‐Ibarra,

Lucero‐Chavez

et al. 2023

J of Chemical Tech & Biotech

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BackgroundIn developing countries, anaerobic digestion still represents an emerging technology for solid waste management, despite the great energy potential of methane in biogas for heating purposes, especially in low‐temperature regions. This research evaluated the effect of hydraulic retention time (40–120 days) on the anaerobic co‐digestion of 35% w/w waste activated sludge and 65% w/w organic kitchen waste at a low temperature (20 °C). The anaerobic co‐digestion was conducted in five 11‐L semicontinuous anaerobic digesters. Additionally, the expected energy production from organic kitchen waste was calculated.ResultsThe specific methane yield (SMY) ranged from 0.20 to 0.27 LCH4 g‐VSadd−1, comparable to the SMY reported for meso‐ and thermophilic anaerobic digestion. Moreover, the expected energy production was 1.06 MJ day−1 of equivalent liquefied petroleum gas, which could satisfy ≤6.6% of the daily water heating requirements of an average Mexican household. The hydraulic retention time in the range of 60–120 days did not seem to significantly affect the performance of the digesters.ConclusionsThese digesters could easily be installed in low temperature regions for domestic use. The waste activated sludge substrate can be replaced with other nitrogen‐rich substances for indoor use. The data shown in this research set the basis for further investigations and domestic applications. © 2023 Society of Chemical Industry (SCI).

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High solid mono-digestion and co-digestion performance of food waste and sewage sludge by a thermophilic anaerobic membrane bioreactor

Cited by 42 publications

References 40 publications

Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

Understanding Anaerobic Co-digestion of Organic Wastes through Meta-Analysis

Advancing the bioconversion process of food waste into methane: A systematic review

Enhancing kitchen waste minimization and energy generation at 20 °C: a psychrophilic anaerobic co‐digestion study

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