Comparative Evaluation of Biogas Yield and Physicochemical Properties of Three-Phase and Traditional Olive Oil Mill Wastes – The Most Suitable Choice for Efficient Anaerobic Digestion

• Autorzy: Hamdi Inass , El Asri Ouahid , Lihi Khadija , Hamdaoui Hajar , Auajjar Nabila , Chafi Abdelhafid , Attarassi Benaissa

Identyfikatory

DOI

10.12912/27197050/164738

• Języki publikacji: EN

Abstrakty

EN

Olive oil mill waste is characterized by its high organic matter content, especially fatty acids, polyphenols, sugars, and proteins. These nutrients can be used as a source of energy for biogas production. However, olive oil mill waste can also contain heavy metals such as lead, cadmium, copper, and zinc that can be absorbed by plants. In addition, very high concentrations of heavy metals can also inhibit the anaerobic digestion process by affecting the methanogenic bacteria involved in biogas production The aim of this research is to determine the composition of solid and liquid rejections from traditional and continuous three-phase crushing systems, by analyzing samples from different oil mills in the eastern region of Morocco. We also applied the technology of anaerobic digestion of solid and liquid waste forms of oil mills, to make a link between the biogas yield and the physicochemical characteristics of these wastes. The results suggest that traditional oil mill wastewater (Discontinuous OMWW) has high organic matter, nutrients, and heavy metals content and a low concentration of phenolic compounds, which can increase its biogas production potential with a production of 10.02 Nml/g VS, while three-phase wastewater (Continuous OMWW) has limited biogas production potential (3.83 Nml/g VS) due to the low organic matter and nutrients content, and high concentration of phenolic compounds. Three-phase olive pomace (Continuous OMSW) has a higher biogas production (9.28 Nml/ g VS) than traditional olive pomace (Discontinuous OMSW) with 5.91 Nml/g VS. In fact, the lower content of phenolic compounds and volatile fatty acids favors their anaerobic digestion and improves their biogas production. In conclusion, the selection of the type of waste adapted for biogas production must be based on the physicochemical and microbiological characteristics of these wastes.

Słowa kluczowe

EN

olive oil waste; biogas yield; physicochemical characteristics; discontinuous waste; continuous waste

• Wydawca: Lubelski Oddział Polskiego Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology ; WNGB Wydawnictwo Naukowe
• Czasopismo: Ecological Engineering & Environmental Technology
• Rocznik: 2023
• Tom: Vol. 24, iss. 5
• Strony: 76--83
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Hamdi Inass

• Biology and Health Laboratory, Faculty of Sciences, Ibn Tofail University, Av. de L’Université Kenitra, Morocco
• Laboratory for the Improvement of Agricultural Protection, Biotechnologies, and the Environment (LAPABE), Faculty of Sciences, Mohammed First University, Oujda, Morocco

• https://orcid.org/0000-0003-3429-592X

autor

El Asri Ouahid

• Plant Biotechnology Laboratory, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco

• https://orcid.org/0000-0002-1444-1371

autor

Lihi Khadija

• Biology and Health Laboratory, Faculty of Sciences, Ibn Tofail University, Av. de L’Université Kenitra, Morocco

• https://orcid.org/0000-0002-8771-609X

autor

Hamdaoui Hajar

• Laboratory for the Improvement of Agricultural Protection, Biotechnologies, and the Environment (LAPABE), Faculty of Sciences, Mohammed First University, Oujda, Morocco

• https://orcid.org/0000-0002-0465-3709

autor

Auajjar Nabila

• Biology and Health Laboratory, Faculty of Sciences, Ibn Tofail University, Av. de L’Université Kenitra, Morocco

• https://orcid.org/0000-0003-1516-7623

autor

Chafi Abdelhafid

• Laboratory for the Improvement of Agricultural Protection, Biotechnologies, and the Environment (LAPABE), Faculty of Sciences, Mohammed First University, Oujda, Morocco

• https://orcid.org/0000-0001-6105-5601

autor

Attarassi Benaissa

• Biology and Health Laboratory, Faculty of Sciences, Ibn Tofail University, Av. de L’Université Kenitra, Morocco

• https://orcid.org/0000-0002-3546-1072

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).