Digestive performance of sludge with different crop straws in mesophilic anaerobic digestion

Chen, Yongdong; Zhao, Zhengyan; Zou, Huijing; Yang, Haifeng; Sun, Tong; Li, Mingxing; Chai, Hongxiang; Li, Li; Ai, Hainan; Shi, Dezhi; He, Qiang; Gu, Li

doi:10.1016/j.biortech.2019.121595

Cited by 54 publications

(9 citation statements)

References 46 publications

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“…This issue may arise due to poor sampling, poor storage/handling of inoculum, as well as a lack of trace element in the inoculum In this study, it is believed that trace elements were insufficient as sampling and handling were carried out according to the standard procedures as described in Angelidaki et al [26]. Other potential explanations need to be investigated such as poorly performing digesters, inoculum source and ratio of inoculum to substrate [29]. The results in this study confirmed that future modifications to the BMP test is necessary.…”

Section: Specific Biogas and Methane Productionmentioning

confidence: 93%

“…Angelidaki et al [26] developed guidelines to standardise the procedures in the BMP tests, with various aspects to be considered such as inoculum activity, macro-or micro-nutrients, mixing arrangement, particle size of the tested substrates, as well as characteristics and composition of the tested substrates. Several studies have utilised BMP testing to investigate the biogas potential of additional biomass feedstocks, such as fruit wastes [23]; OPEFB [27]; coffee husk [28]; and straw [29]. Studies which focus on the aforementioned agro-industrial and agricultural crop residues relevant to Indonesia are currently limited.…”

Section: Introductionmentioning

confidence: 99%

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Estimation of Biogas Production and the Emission Savings from Anaerobic Digestion of Fruit-based Agro-industrial Waste and Agricultural crops residues

et al. 2020

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In this study, the biomethane potential of five agricultural crop residues (ACR's) (rice straw, vegetable waste, maize straw, coffee husk and oil palm empty fruit bunches (OPEFB)) and five Fruit-Based Agro-Industrial Wastes (FBAIW's) (jackfruit straw, banana, orange, apple and pineapple peel waste) were evaluated. The carbon and energy balance for each waste was also theoretically modelled for two biogas conversion scenarios (AD with CHP or biogas upgrading). A standard biomethane potential test (BMP) was operated over 30 days at 37 o C. Specific methane potential (SMP) of FBAIW's was generally higher than that of the ACR's, except for vegetable waste. Vegetable waste was identified as having the highest SMP (0.420 m 3 /kgVS added ). With respect to ACRs, OPEFB and coffee husk had the lowest SMP values of 0.185 and 0.181 m 3 /kgVS added , respectively. This was attributed to the higher lignin content of these wastes which can impact on biodegradation and subsequent biogas production. Theoretical estimations showed a positive energy balance for all wastes tested. In terms of exportable energy, apple peel waste was shown to have the highest exportable energy potential. The FBAIW's also exhibited greater emissions savings than ACR's (with the exception of vegetable waste). This study concluded that there is good potential to valorise these wastes using AD and that this could address the challenges of waste management and clean energy provision in Indonesia.

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Section: Specific Biogas and Methane Productionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Estimation of Biogas Production and the Emission Savings from Anaerobic Digestion of Fruit-based Agro-industrial Waste and Agricultural crops residues

et al. 2020

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“…However, the values of λ were greatly shortened in crop straws (CC, CS, WS and RS)-added digesters (5.6-7.5 d), indicating that these types of crop straws (CC, CS, WS and RS) addition could enhance the gasogenic efficiency and microbial function. The unique structures of crop straws could provide suitable adhesion condition for microbes, which is conducive to enrich microbial abundance and to alleviate the inhibitory effects of the intermediates (such as volatile fatty acids and ammonia) on methanogens [25].…”

Section: Biogas Productionmentioning

confidence: 99%

“…Previous study [8] found that the hydrolysis of LBs was much slower than other organic solid waste, which might be attributed to the refractory property of lignocellulose in LBs. Besides, lignocellulose structure is another important factor which can affect the digestive performances of LBs [9].…”

Section: Introductionmentioning

confidence: 99%

Hydrolytic performances of different organic compounds in different lignocellulosic biomass during anaerobic digestion

Yang¹,

Deng

Jin³

et al. 2021

Environmental Engineering Research

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Hydrolytic performances of different organic compounds in lignocellulosic biomass (LB) during anaerobic digestion (AD) are worth investigating due to the complex and refractory structure of lignocellulose. This study aimed to clarify the hydrolytic performances of different lignocellulosic components (hemicellulose, cellulose and lignin) and other typical organics (saccharides, protein and lipid) in AD process. Furthermore, an in-depth study of different lignocellulosic components mono-/co-digestive performances, as well as their effects on digestive systems were also designed to explain the mechanism. Kinetic models were specially applied to evaluate the hydrolytic process and make comparison among different lignocellulosic components. Results showed that hemicellulose obtained high degradation ratio (77.2-85.0%) during anaerobic digestion, while cellulose was difficult to hydrolyze without sufficient acidity. And organics (saccharides, protein and lipid) were much easier to be hydrolyzed than lignocellulose. Results also depicted that lignocellulose addition could efficiently enhance the volatile solid (VS) removals of digestive systems, while lignin existing in systems reduced the VS removal. The limited hydrolysis of lignocellulose hindered the degradation of total VS in digester. It is quite important to obtain high bioenergy conversion, pretreatments, which can destroy the lignin wrapping in LBs digestion. This study could provide a reference for the AD of LBs.

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“…Thus, air-dried crop stalk is difficult to immediately ensile due to its low moisture, sugar, and high fiber content (Vervaeren et al 2010). Although co-ensiling of dried crop stalk with other agro-industrial waste material, such as vegetable waste and sugar beet leaves, may achieve well-preserved silages, the natural cross-linked recalcitrant structure of dried crop stalk may hinder efficient lactic fermentation (Hillion et al 2018;Ren et al 2018;Chen et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Enhancing the co-ensiling performance of corn stover and cabbage waste via the addition of cellulase

Ren

Wang

Zhao

et al. 2021

BioRes

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Effects of cellulase addition were assessed relative to the co-ensiling performance of air-dried corn stover (DCS) and cabbage waste (CW). The DCS and CW mixtures were co-ensiled with 0 to 0.3% of cellulase addition, and changes in composition, intermediates, and biological activity were characterized. The results showed that the addition of cellulase enhanced the decomposition of cellulose and hemicellulose by 2.51 to 6.93% and 3.41%, based on different dosages and compared with the control. Thus, the content of water-soluble carbohydrates increased. The acid content also increased from 5.8% for the control to the range 5.16 to 8.51% for the samples containing cellulase. Moreover, there was a shift from homolactic to heterolactic fermentation with prolonged ensiling time, coupled with the dominant lactic acid bacteria shifting from Paralactobacillus and Lactobacillus to more of Lactobacillus. Thus, the addition of cellulase improved the relative abundance of Lactobacillus. An assessment of fermentation quality, therefore, suggested that cellulase addition can improve the silage quality of DCS/CW during co-ensiling.

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Digestive performance of sludge with different crop straws in mesophilic anaerobic digestion

Cited by 54 publications

References 46 publications

Estimation of Biogas Production and the Emission Savings from Anaerobic Digestion of Fruit-based Agro-industrial Waste and Agricultural crops residues

Estimation of Biogas Production and the Emission Savings from Anaerobic Digestion of Fruit-based Agro-industrial Waste and Agricultural crops residues

Hydrolytic performances of different organic compounds in different lignocellulosic biomass during anaerobic digestion

Enhancing the co-ensiling performance of corn stover and cabbage waste via the addition of cellulase

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