Effects of organic composition on mesophilic anaerobic digestion of food waste

Li, Yangyang; Jin, Yiying; Borrion, Aiduan; Li, Hailong; Li, Jinhui

doi:10.1016/j.biortech.2017.07.006

Cited by 84 publications

(32 citation statements)

References 45 publications

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“…Therefore, for optimum VS and EE reduction to achieve relatively higher methane yield and shorter digestion duration, reductions of 65.01 -67.77% and 77.80 -79.41% were preferred to obtain optimum economic benefits from food waste digestion. Moreover the methane yield ranged from 559 to 586 mL/gVS, while the digestion duration varied from 196 to 212 h [51].…”

Section: Effects Of Organic Reduction and Methane Yieldmentioning

confidence: 99%

Kinetic studies on organic degradation and its impacts on improving methane production during anaerobic digestion of food waste

Jin

et al. 2018

Applied Energy

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Organics degradation is vital for food waste anaerobic digestion performance, however, the influence of organics degradation on biomethane production process has not been fully understood. This study aims to thoroughly investigate the organics degradation performance and identify the interaction between the reduction of organic components and methane yield based on the evaluation on 12 types of food waste. Five models (i.e.

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Section: Effects Of Organic Reduction and Methane Yieldmentioning

confidence: 99%

Kinetic studies on organic degradation and its impacts on improving methane production during anaerobic digestion of food waste

Jin

et al. 2018

Applied Energy

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“…Sun et al [8] reported that, for a lipid concentration of 65% or higher, methane yields decreased sharply, pointing out that methane yields increased with increasing lipid concentration when it was below 60% [8]. Indeed, methane production was positively correlated with lipid reduction and increasing of the lipid ratio in the substrate would result in the growth of methane production [25]. Obviously, its content must be limited within a certain range to avoid inhibition by long chain fatty acids.…”

Section: Methane Productionmentioning

confidence: 99%

Interactive Effects of Chemical Composition of Food Waste during Anaerobic Co-Digestion under Thermophilic Temperature

et al. 2019

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The effects of chemical composition (carbohydrates, lipids, and protein) on the anaerobic co-digestion performance of food wastes (FW) were investigated from the viewpoints of methane production, dynamic parameters, and microbial community structure. The results of this study showed that a notable gasification rate was positively correlated with the proportion of the composition. A T2 reactor, which consisted of 60% carbohydrates, 20% lipids, and 20% protein, held a higher gasification rate of 65.09% compared to other groups, while its process parameters showed some deficiency regarding the stability of digestion, especially for low biochemical methane potential (BMP), which was not beneficial for the actual practice. A T4 reactor, with a highest gasification rate of 70.68%, held the maximum BMP (497.44 mL/g VS). The stable chemical parameters achieved the optimal proportion, consisting of 40% carbohydrates, 40% lipids, and 20% protein. Furthermore, its microbial populations were rich and achieved a balance of the two main dominant communities of acetoclastic methanogens and hydrogenotrophic methanogens, whose relative abundance was close. It was obvious that interactive effects were caused by different proportional composition, which led to constantly changing chemical parameters and microbial community.

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“…Table III summarised the First-Order kinetics model to the digestion fitting results. The methane production potential was expressed as M o (mL CH 4 /gVSd) while k is the first-order hydrolysis rate that represents the speed of degradation [26]. The values of methane production potential (M o ) of the first-order kinetic model from UBP and RBP were higher than the one obtained in the BMP laboratory test.…”

Section: Kinetics Of Methane Productionmentioning

confidence: 93%

“…3. The reactor is a 500 mL Duran glass bottles with the active volume of 400mL [26]. The BMP assays were carried out using a mixture of substrate and inoculum in triplicate sample reactors, and duplicate blank reactors filled solely with inoculum in exact mass into the reactors [27,28].…”

Section: B Bmp Batch Assaymentioning

confidence: 99%

See 1 more Smart Citation

Energy Recovery from Anaerobic Digestion of Banana Peels

Shaharoshaha¹,

Sulaiman²,

Seswoya³

2019

IJRTE

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Bananas are tropical fruits mostly eaten in Malaysia. The banana peels are high in organic, and putrescible caused the odour and leachate problem where it has been a dump. In practice, banana peels considered as a waste product that has been combined with municipal solid waste and dumped into the landfills. However, banana peels are bountiful in organic matter and high with moisture content. Thus, it could be a convincing substrate for biogas production through anaerobic digestion so that the major concerns of environmental protection is achieved aside from producing energy in a sustainable way. Therefore, this study was initiated to estimate the ultimate methane yield from the unripe banana peel (UBP) and ripe banana peel (RBP). Besides that, the assessment on the kinetics of the methane production from UBP and RBP is conducted using Modified Gompertz and first-order kinetic modelling. In this study, the anaerobic digestibility of banana peels measured in a batch reactor for 25 days each fed by UBP and RBP. The batch reactors operated at an inoculum to substrate ratio (I/S) of 1.0 and at a mesophilic temperature (37°C). The ultimate methane yields from UBP and RBP digestion were 847.57mLCH4 /gVS and 1405.31mLCH4 /gVS, respectively. The higher bioavailability (in term of COD, and solid) in RBP resulted in the higher methane production rate. Two first-order and modified Gompertz kinetic models were compared for the prediction of organic degradation, and the results indicated that the first-order kinetic model of the RBP fitted the experiment best. It concluded that ripe banana peels are the most preferable feedstock for the anaerobic digestion.

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Effects of organic composition on mesophilic anaerobic digestion of food waste

Cited by 84 publications

References 45 publications

Kinetic studies on organic degradation and its impacts on improving methane production during anaerobic digestion of food waste

Kinetic studies on organic degradation and its impacts on improving methane production during anaerobic digestion of food waste

Interactive Effects of Chemical Composition of Food Waste during Anaerobic Co-Digestion under Thermophilic Temperature

Energy Recovery from Anaerobic Digestion of Banana Peels

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