Effect of Alkali-NaOH Pretreatment on Methane Production from Anaerobic Digestion of Date Palm Waste

• Autorzy: Lahboubi Nabila , Karouach Fadoua , Bakraoui Mohammed , El Gnaoui Yasser , Essamri Azzouz , El Bari Hassan

Identyfikatory

DOI

10.12912/27197050/144846

• Języki publikacji: EN

Abstrakty

EN

Anaerobic digestion of the date palm empty fruit bunch is a promising technology for both solid waste management and biogas production. The date palm empty fruit bunch is a lignocellulosic waste that takes more time for degradation and has a low biodegradability, thus pretreatment is needed to improve anaerobic biodegradation. In this study, the substrate was pretreated with different ratios of alkali-NaOH: 6, 18 and 30% (w/w) (ratio weight of NaOH / weight of Volatile Solid) for 10 min at room temperature to evaluate the effect of high alkali concentration on the methane potential and biodegradability. The experiment was conducted in a 5 L batch reactor under mesophilic conditions (37 °C). The methane potential of the untreated substrate was 98.5 N mL/gVS. The best methane potential improvement of 104% was achieved in the treatment of 18% (w/w) (204 N mL/gVS) with a biodegradability of 50%. Besides, two kinetic models were used to fit the experimental methane potentials and to explore process parameters (Modified Gompertz and Transference function). The best fit for predicting the parameters of methane production was observed for the 18% (w/w) pretreatment using the transference function, with a maximum methane production rate of 5 N mL/gVS.d.

Słowa kluczowe

EN

alkali pretreatment; methane; biogas; date palm; fruit bunch; kinetic study

• Wydawca: Lubelski Oddział Polskiego Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology ; WNGB Wydawnictwo Naukowe
• Czasopismo: Ecological Engineering & Environmental Technology
• Rocznik: 2022
• Tom: Vol. 23, iss. 2
• Strony: 78--89
• Opis fizyczny: Bibliogr. 45 poz., rys., tab.

Twórcy

autor

Lahboubi Nabila

• Laboratory of Organic Chemistry Catalysis and Environment, Faculty of Sciences Kenitra, University Ibn Tofail Kenitra, Morocco

• https://orcid.org/0000-0002-6365-260X

autor

Karouach Fadoua

• Laboratory of Electronic Systems, Information Processing, Mechanics and Energetics, Faculty of Sciences Kenitra, University Ibn Tofail Kenitra, Kenitra, Morocco

• https://orcid.org/0000-0003-3804-0828

autor

Bakraoui Mohammed

• Laboratory of Electronic Systems, Information Processing, Mechanics and Energetics, Faculty of Sciences Kenitra, University Ibn Tofail Kenitra, Kenitra, Morocco

• https://orcid.org/0000-0002-3684-8201

autor

El Gnaoui Yasser

• Laboratory of Electronic Systems, Information Processing, Mechanics and Energetics, Faculty of Sciences Kenitra, University Ibn Tofail Kenitra, Kenitra, Morocco

• https://orcid.org/0000-0001-9845-4104

autor

Essamri Azzouz

• Laboratory of Organic Chemistry Catalysis and Environment, Faculty of Sciences Kenitra, University Ibn Tofail Kenitra, Morocco

• https://orcid.org/0000-0002-6587-9496

autor

El Bari Hassan

• Laboratory of Electronic Systems, Information Processing, Mechanics and Energetics, Faculty of Sciences Kenitra, University Ibn Tofail Kenitra, Kenitra, Morocco

• https://orcid.org/0000-0002-0645-4340

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