Modeling of biogas production and biodegradability of date palm fruit wastes with different moisture contents

Khedher, Nidhal Ben; Lattieff, Farkad A.; Mahdi, Jasim M.; Ghanim, Marrwa S.; Majdi, Hasan Sh.; Jweeg, Muhsin J.; Baazaoui, Narjes

doi:10.1016/j.jclepro.2022.134103

Cited by 13 publications

(5 citation statements)

References 23 publications

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“…The treatment 0/100 showed low maximum production rates and low total biogas production, which cannot be considered as a satisfactory result, despite the short lag phase, and indicates low activity of methanogenic microorganisms throughout the digestion period. The λ , μ m , and M values found for the methanogenic stage (9.34–2.034 d, 25.64–3.95 mL gVS −1 d −1 , 188.74–57.47 mL gVS −1 , respectively) are similar to the values found for anaerobic digestion of waste of palm fruits as reported by Khendher et al 60 For biogas production from fruit wastes with different moisture contents, they found values for λ , μ m , and M varying between 22.78–1.188 d, 25.28–7.9 mL gVS −1 d −1 , 90.5–186.7 mL gVS −1 , respectively.…”

Section: Resultssupporting

confidence: 88%

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Two‐phase anaerobic codigestion of a cassava starch‐based biopolymer with papaya waste

Cremonez,

Teleken,

Meier

et al. 2024

Env Prog and Sustain Energy

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The objective of this work was to evaluate anaerobic digestion processes of mixtures of cassava starch‐based polymer (CSP) and papaya fruit pulp waste (PPW) at different ratios, with physical division of digestion stages. Acidogenic phase (phase 1) was conducted under temperature of 45°C and hydraulic retention time of 96 h. Monitoring reactors with destructive samples were subjected to the same conditions in order to assess the initial degradation profile of the substrates. The methanogenic phase (phase 2) was conducted under temperature of 37°C and the hydraulic retention time was defined as equal to the time the biogas production ceased. The results showed that the CSP/PPW mixtures presented interesting synergism and high biogas production potential under the conditions studied. The treatment with CSP/PPW at the ratio of 75/25 showed the best digestion performances in the phase 1. The highest CSP to PPW ratios showed satisfactory results for accumulated biogas productions (5955.58 mL) and for maximum biogas production rate (25.64 mL gVS−1 day−1) in the phase 2.

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Section: Resultssupporting

confidence: 88%

“…The values of R 2 higher than 0.95 in all treatments (Table 2), denoting good fit of the data to the model. These results are in according to Cremonez, 2 Yahya et al 59 and Khendher et al 60 that showed the good agreement between experimental data and Gompertz model for biogas production in anaerobic processes.…”

Section: Resultssupporting

confidence: 76%

Two‐phase anaerobic codigestion of a cassava starch‐based biopolymer with papaya waste

Cremonez,

Teleken,

Meier

et al. 2024

Env Prog and Sustain Energy

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“…[81, 82] also got negative values for λ (-4.21 days for Modi ed Gompertz model, and − 5.12 days for Modi ed Logistic model), (-4.99, -2.42, and − 3.49 for Modi ed Gompertz model), respectivelly due to mathematical calculation errors, and biogas generation was obtained within rst day without any λ. Therefore, Modi ed Gompertz model λ results match with practical lag phase values [74,77,. 83, 84] also suggested that Modi ed Gompertz model is effectively working for curve tting in terms of methane gas production.…”

supporting

confidence: 53%

“…These models work based on experimental cumulative methane yield. The kinetic parameters of each of the reactors were estimated using nonlinear least-squares regression analysis with the help of MATLABR2013b [73,74]. The following table-4 represents the different mathematical models used for this AcoD.…”

Section: Kinetic Studymentioning

confidence: 99%

Effect of chemical composition on the anaerobic co-digestion of source segregated organic fraction of municipal solid wastes

Jakki

Ahammed

Parsai

2022

Preprint

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Recently waste to energy projects gaining more attraction due to rapid waste generation due to increased urbanization. Improper municipal solid waste (MSW) treatment resulting in environmental risks such as air pollution, ground, and surface water contamination. Anaerobic digestion (AD) is the best method to treat organic solid waste. Mono-AD of organic fraction of municipal solid wastes (OFMSW) leads to lower methane yield due to the accumulation of volatile fatty acids (VFAs). Mixing of two or more substrates (Co-digestion) dilutes the toxic compounds and increases the methane yield by providing proper environment for microbes. In this study anaerobic co-digestion (AcoD) of source segregated OFMSW (particularly food waste, fruit waste, and vegetable waste) with chicken fecal matter (co-substrate), and cow dung (inoculum) was investigated by using batch studies (Duration of 30 days). AcoD carried out in three different batch reactors viz. R1 (food mix), R2 (vegetable mix), and R3 (fruit mix) feed with substrates (S1& S2) and inoculum (I) (S1: S2: I = 0.5:0.5:2). The methane percentage obtained for reactor R1 was 69.60%, which is higher compared to the other reactors (R2- 61.2%, and R3- 57.37%). R1 reactor had higher methane yield due to its higher lipids (higher VFAs), and proteins (sufficient buffer capacity). R3 reactor had lowest methane yield due to its highest carbohydrates (rapid acidification), and lower proteins (lower buffer capacity). Modified Gompertz model gave better results near to experimental studies. The present study proved that mixing OFMSW with proper co-substrate (protein-rich) increases the methane yield by providing proper buffer capacity.

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“…One of the principle models to predict the kinetic analysis of biogas generation process with more detail is the modified Gompertz model [16], which is shown in equation 1:…”

Section: Fig 2 Biogas Accumulated Productionmentioning

confidence: 99%

Anaerobic Co-digestion with different concentrations of whey and cow dung in biogas production

Cieza¹,

Cruz²,

Wang³

et al. 2023

Proceedings of the 21th LACCEI International Multi-Conference for Engineering, Education and Technology (LACCEI 2023): “Leaders

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In this research, the whey potential for optimization of biogas production by anaerobic codigestion with cow dung was studied. It used a two-component multifactorialdesign, where it was studied four batch typebiodigesters of 4 liters on a laboratory scale with different whey concentrations (0%, 10%, 30%, 50%) and dilute cow dung in relation 1:1.5, each one in three replications. The experimentation was performed under temperature control of 35°C±2°C; and pH control between 6.4 to 6.9 by the addition of NaOH 3N; with an average of 7% of total solids and a holding time of 35 days. Below these conditions, the 2 nd biodigester with 10% of whey, it was the one which generate the largest amount of biogas with 37.9 liters in total; the 3 rd biodigester, with 30% of whey generates 24.2 liters of biogas;and the 4 th biodigester, with 50% of whey generates 14.5 liters. The reduction of total solids in biodigesters were 38.5%, 43.4%, 40.2% and 27.6% respectively. We used the Gompertz model, which allowed us to find high correlation grades oscillating between 86.295% y 94.268%. Therefore, it can be established, that the use of whey duplicates the biogas production until 52% and sets a limit of 30% (v/v) to obtain a good biogas production in batch-type biodigesters.

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Modeling of biogas production and biodegradability of date palm fruit wastes with different moisture contents

Cited by 13 publications

References 23 publications

Two‐phase anaerobic codigestion of a cassava starch‐based biopolymer with papaya waste

Two‐phase anaerobic codigestion of a cassava starch‐based biopolymer with papaya waste

Effect of chemical composition on the anaerobic co-digestion of source segregated organic fraction of municipal solid wastes

Anaerobic Co-digestion with different concentrations of whey and cow dung in biogas production

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