Influence of temperature on enhancement of volatile fatty acids fermentation from organic fraction of municipal solid waste: Synergism between food and paper components

Soomro, Abdul Fatah; Abbasi, Irfan Ahmed; Ni, Zhen; Li, Ying; Liu, Jianguo

doi:10.1016/j.biortech.2020.122980

Cited by 44 publications

(24 citation statements)

References 41 publications

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“…37 The another reason for this increased biodegradation can be possible VFA utilization during AD, which did not caused inhibition due to higher acidication. 38,39 Thus, increased digester performance was observed in ultrasonic assisted anaerobic digester for all substrate types.…”

Section: Effect On Physical Morphologymentioning

confidence: 86%

Effect of ultrasonic application during KOH pretreatment and anaerobic process on digestion performance of wheat straw

et al. 2020

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Section: Effect On Physical Morphologymentioning

confidence: 86%

Effect of ultrasonic application during KOH pretreatment and anaerobic process on digestion performance of wheat straw

et al. 2020

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“…The better hydrolysis performances were obtained at 55°C. The effect of temperature on hydrolysis has been studied by several authors between 20 and 70°C (Arras et al, 2019;Cheah et al, 2018;Krause et al, 2018;Nilsson Påledal et al, 2018;Soomro et al, 2020).…”

Section: Temperature Effectmentioning

confidence: 99%

Temperature phased anaerobic digestion (TPAD) of organic fraction of municipal solid waste (OFMSW) and digested sludge (DS): Effect of different hydrolysis conditions

et al. 2021

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Hydrolysis is the most critical stage in high solids Temperature Phased Anaerobic Digestion (TPAD). In this paper two different Organic Fraction of Municipal Solid Waste (OFMSW) types were tested in co-digestion with Digested Sludge (DS) at different temperatures: 37, 55 and 65 °C. Volatile fatty acids (VFAs), soluble chemical oxygen demand (CODs) and Biochemical Methane Production (BMP) were measured and calculated after 0, 24, 48 and 72 h hydrolysis. The results showed that both the BMP and the methane production rate improved. A Solids Retention Time (SRT) of 72 h at a temperature of 55°C gave the best results: the reaction rate constant k was 0.34 d -1 and the BMP was 250 mLCH4/gMV, which were 47% and 19% higher compared to the reference (0 h hydrolysis). The CODs and VFAs profiles during hydrolysis showed how OFMSW initial characteristics can affect the performance of temperature phased anaerobic digestion.

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“…The internal reaction that could enhance the quality and/or quantity of the end products during the fermentation of different substrates can be termed as synergistic effect [6] and can be mathematically expressed as Eq. (4).…”

Section: Synergistic Effectmentioning

confidence: 99%

“…However, the yields of methane and biodegradability data, discussed in greater details in the coming sections, disclosed that the biodegradability of KW and SS was not hampered are the sub-optimal C/N ratios. This could be mainly, because, the nutrients required for the microbial growth were compensated by the inoculum [6]. Additionally, Table 1 indicates that KW contains fiber because of availability of cellulose and hemicellulose, and also contains higher percentages of carbohydrate and protein, making it an ideal and easily biodegradable organic substrate for anaerobic digestion [34].…”

Section: Characteristics Of Substratesmentioning

confidence: 99%

“…The anaerobic digestion (AD), is considered as an environmentally friendly way of treating and converting organic kitchen waste into renewable energy, mainly in the form of methane [4]. However, the major limitation of just using organic material, which is readily degradable, in the AD process is that digestion efficiency would be significantly reduced [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Methane production from anaerobic mono- and co-digestion of kitchen waste and sewage sludge: synergy study on cumulative methane production and biodegradability

Varsha

Soomro

Baig

et al. 2020

Biomass Conv. Bioref.

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Globally, kitchen waste (KW) and sewage sludge (SS) are two important forms of organic wastes that need immense attention during handling and management. As the characteristics and components of KW vary significantly with respect to location and season, it is often difficult to understand the behavior of KW during the (co-)digestion process. Therefore, this study aimed to investigate the synergistic influence of KW over SS and vice versa during anaerobic (co-)digestion. Anaerobic mono-digestion and co-digestion of SS and KW, considering three different mixing ratios SS:KW; (SK1-25:75, SK2-50:50, SK3-75:25), was conducted to investigate their specific methane yields (SMY) and biodegradability (BD). The modified Gompertz equation was used to estimate the theoretical methane potential and used as a reference for experimental data assessment. The results demonstrated that SMYs were 212 and 368 L kg −1 VS added for SS, and KW, respectively. Under the category of co-digestion, sample SK2 (SS:KW; 50:50) had the highest BD of 91% as compared to digestion of SS (61%) and KW (74.9%) separately. A synergistic effect on methane production was witnessed with all ratios and the maximum was noticed with SK2, ca. 40%, which can be ascribed to the enhanced hydrolysis because of the addition of KW, which is readily degradable by nature. Further, this study could be used as guidelines to the design and optimization of the co-digestion process.

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Influence of temperature on enhancement of volatile fatty acids fermentation from organic fraction of municipal solid waste: Synergism between food and paper components

Cited by 44 publications

References 41 publications

Effect of ultrasonic application during KOH pretreatment and anaerobic process on digestion performance of wheat straw

Effect of ultrasonic application during KOH pretreatment and anaerobic process on digestion performance of wheat straw

Temperature phased anaerobic digestion (TPAD) of organic fraction of municipal solid waste (OFMSW) and digested sludge (DS): Effect of different hydrolysis conditions

Methane production from anaerobic mono- and co-digestion of kitchen waste and sewage sludge: synergy study on cumulative methane production and biodegradability

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