Hassan El Bari

@uit.ac.ma

Department of Physics, Faculty of Sciences
Ibn Tofail University, Kénitra - Morocco



                             

https://researchid.co/helbari

Prof. Dr. Hassan El Bari has been a professor at Ibn Tofail University-Morocco since 1988. He obtained his PhD in Material Sciences from INPL (France) in 1987 and also a "Doctorat d’Etat" in Mechanical Engineering, University Mohamed V-Morocco, 1998. He is the president of the Moroccan Association of Solid Waste. He was Master Degree Coordinator: Waste Management and Recovery, 2010–2014. He has been involved in many funded projects as a coordinator and partner. He has a long experience in teaching waste management, biomass and bioenergy, and biogas technology. He is an Associate Editor in the Cleaner Waste Systems Journal (Elsevier) and a Guest Lecturer at the University of KwaZulu-Natal, South Africa. He is a co-editor of the book "Ecological Sustainable Waste Management–Energetic Utilization of Organic Waste", Mensch und Buch Verlag, Berlin, 2018, ISBN 978-3-86387-935-8, and editor of the book "Waste Management in Developing Countries", ISBN-13: 978-3031280009, Springer, 2023

EDUCATION

Prof. Dr. Hassan El Bari has been a professor at Ibn Tofail University-Morocco since 1988.
He obtained his PhD in Material Sciences from INPL (France) in 1987
and also
"Doctorat d’Etat" in Mechanical Engineering, University Mohamed V-Morocco, 1998

RESEARCH, TEACHING, or OTHER INTERESTS

Renewable Energy, Sustainability and the Environment, Renewable Energy, Sustainability and the Environment, Waste Management and Disposal, Bioengineering

FUTURE PROJECTS

Advanced Biogas technology


Applications Invited
Partners

Digestate Management


Applications Invited
Partners

Appropriate Waste Management technology for developing countries


Applications Invited
Partners
49

Scopus Publications

888

Scholar Citations

20

Scholar h-index

28

Scholar i10-index

Scopus Publications

  • Enhancing biomethane production from food waste using olive pomace hydrochar: An optimization study
    Sanae Habchi, Nabila Lahboubi, Mohamed Asbik, and Hassan El Bari

    Elsevier BV

  • Catalytic fast pyrolysis of lignocellulosic biomass: Recent advances and comprehensive overview
    Hassan El Bari, Casimir Kalibe Fanezoune, Bogdan Dorneanu, Harvey Arellano-Garcia, Thokozani Majozi, Yasser Elhenawy, Oussama Bayssi, Ayoub Hirt, Jorge Peixinho, Asma Dhahak,et al.

    Elsevier BV

  • Valorization of Moroccan Poultry Slaughterhouse Waste Using Anaerobic Digestion: Kinetic Study
    Sanae Habchi, Nabila Lahboubi, and Hassan El Bari

    Springer Science and Business Media LLC

  • Effect of coupling dewaxing and chemical pretreatment on valorization of waxy fruit wastes
    Kraipat Cheenkachorn, Elizabeth Jayex Panakkal, Chaichana Chatkaew, Santi Chuetor, Pau-Loke Show, Hassan El Bari, Ponnusami Venkatachalam, and Malinee Sriariyanun

    Springer Science and Business Media LLC

  • Improving methane production from palm leaflets waste with thermal and ultrasound pre-treatment
    Omar Kerrou, Nabila Lahboubi, Mohammed Bakraoui, and Hassan El Bari

    Elsevier BV

  • Comparative study of energetic potential from anaerobic digestion and direct combustion of date palm wastes
    Nabila Lahboubi, Omar Kerrou, Brahim Sarh, Toufik Boushaki, Veronica Belandria, Yasser El Khattabi, and Hassan El Bari

    Oxford University Press (OUP)
    Abstract This work aims to evaluate the technical and environmental feasibility of converting date palm waste from a Moroccan oasis into energy. In this study, two different scenarios were analysed. The first proposed scenario is the valorization of the date palm substrates using direct combustion (thermochemical conversion) to produce energy. The second proposed scenario is the valorization of the substrates using combined anaerobic digestion of the substrate and direct combustion of the digestate. In this study, two different date palm wastes are: empty fruit bunch (EFB) and palm leaflet (PL). The experimental lower heating values of the digestates studied are 12.93 and 12.71 MJ/kg, respectively. The results show that using Scenario 1, the estimated output energies for the EFB and PL waste were 1.13 and 1.17 MWh, respectively. Using Scenario 2, the EFB and PL output energies were 1.27 and 1.39 MWh, respectively. The study revealed that the combined process is possible as an alternative way to produce energy. Furthermore, combining anaerobic digestion and direct combustion of lignocellulosic waste can contribute to reducing greenhouse gas emissions.


  • TOWARD BIOMASS ENERGY DEVELOPMENT IN AFRICA: OPPORTUNITIES AND OBSTACLES


  • Energetic Potential of Coffee Waste from Anaerobic Digestion and Combustion
    Samira Ait Lhaj Lahcen, Said Ibn Ahmed, Nabila Lahboubi, and Hassan El Bari

    Wydawnictwo Naukowe Gabriel Borowski (WNGB)
    Coffee is present in every street in the world and is without a doubt one of the most consumed beverages. More - over, it is the third most consumed drink in the world. Recent estimations from the International Coffee Orga - nization put. The world coffee production at about 6 million tons per year. Its uncontrolled disposal can cause environmental problems, but if handled properly, it can be processed into pellets, and used as an energy source. In the present study, the production of energy from coffee waste (CW) is an interesting alternative to traditional production lines. The objective of this study is to calculate the energetic potential (Ep), which can be generated by anaerobic digestion (AD) and thermochemical conversion (TC), of the organic fraction of CW in the city of Keni - tra, Morocco. An elementary analysis allows us to estimate the calorific value by the TC. The lower and higher calorific values were estimated to be: 18.71 and 20.28 MJ/Kg, respectively. Ep results by AD and CT were 0.25 and 1.3 MWh/t, respectively.

  • Kinetics of combined hydrothermal pretreatment and anaerobic digestion of lignocellulosic biomass (pepper plant and eggplant)
    K. Hamraoui, J. A. Siles, A. F. Chica, M. A. Martín, and H. El Bari

    Informa UK Limited
    ABSTRACT A large quantity of lignocellulosic biomass is generated annually across the world which leads to environmental pollution and requires valorization. This study investigated the effect of hydrothermal pretreatment on the anaerobic digestion and co-digestion of the residual pepper plant and eggplant with a focus on kinetics. Two thermal hydrolysis rates were observed, with the optimal conditions for the hydrothermal pretreatment of lignocellulosic biomass being 120°C for 40 min. Subsequently, single and combined biomethanization was successfully carried out in laboratory-scale completely stirred tank reactors at mesophilic temperature (35°C). A high increase in methane production was observed after the pretreatment of the pepper plant and eggplant. The pretreated and co-digested wastes led to an optimal methane yield of 79 ± 23 mL CH4/g VS. The modified Gompertz model was used to fit the cumulative methane production of the pretreated lignocellulosic substrates. The kinetic model adequately reproduced the experimental results and might be considered a useful tool to simulate the biomethanization behaviour of complex organic substrates. GRAPHICAL ABSTRACT

  • Effect of mixture ratio and organic loading rate during anaerobic co-digestion of olive mill wastewater and agro-industrial wastes
    Fatiha Sounni, Yasser Elgnaoui, Hassan El Bari, Mohammed Merzouki, and Mohammed Benlemlih

    Springer Science and Business Media LLC

  • Biohydrogen production from fermentation of organic waste, storage and applications
    Hassan El Bari, Nabila Lahboubi, Sanae Habchi, Samir Rachidi, Oussama Bayssi, Nouhaila Nabil, Yasna Mortezaei, and Raffaella Villa

    Elsevier BV

  • Methane production from mesophilic fed-batch anaerobic digestion of empty fruit bunch of palm tree
    Nabila Lahboubi, Omar Kerrou, Fadoua Karouach, Mohammed Bakraoui, Andrea Schüch, Kai Schmedemann, Walter Stinner, Hassan El Bari, and Azzouz Essamri

    Springer Science and Business Media LLC


  • Methane production from date seed cake (Phoenix dactylifera L.) using mesophilic fed-batch anaerobic digestion
    Hamza Ourradi, Nabila Lahboubi, Sanae Habchi, Hafida Hanine, and Hassan El bari

    Elsevier BV


  • Experimental conception and thermo-energetic analysis of a solar biogas production system
    Badr Ouhammou, Aggour Mohammed, Smouh Sliman, Abdelmajid Jamil, Bakraoui Mohammed, Fadoua Karouach, Hassan El Bari, and Tarik Kousksou

    Elsevier BV

  • Effect of Alkali-NaOH Pretreatment on Methane Production from Anaerobic Digestion of Date Palm Waste
    Nabila Lahboubi, Fadoua Karouach, Mohammed Bakraoui, Yasser El Gnaoui, Azzouz Essamri, and Hassan El Bari

    Wydawnictwo Naukowe Gabriel Borowski (WNGB)
    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.

  • Effect of Thermal Pretreatment on the Kinetic Parameters of Anaerobic Digestion from Recycled Pulp and Paper Sludge
    Habchi Sanae, Lahboubi Nabila, Karouach Fadoua, Naim Ikram, Lahlou Yahya, Bakraoui Mohammed, Sallek Brahim, and El Bari Hassan

    Wydawnictwo Naukowe Gabriel Borowski (WNGB)
    This paper investigates the influence of thermal pretreatment on kinetic parameters based on four kinetic models: Modified Gompertz, transference and logistic functions and first order equation. The kinetic modeling was applied on experimental results of previous study on producing methane from anaerobic digestion of Recycled Pulp and Paper Sludge (RPPS) under mesophilic conditions. We observed that the thermal pretreatment improve considerably improved the kinetic parameters mainly the methane production rate and the lag phase. Indeed, it can be noted that methane production rate μ increases significantly from a value of 4.72 to 16.27 ml/h using logistic function for 1 g VS/L added load. Then the lag phase parameter λ has dramatically decreased from 5.46 to 1.04 h using logistic function for 1.5 g VS/L added load. This means that the thermal pretreatment of RPPS accelerates the methane production process and saves time.

  • Co-digestion of industrial recycled pulp and paper sludge with vinasse wastewater: experimental and theoretical study
    F. Karouach, M. Bakraoui, A. Zguani, A. Hammadi, and H. El Bari

    Springer Science and Business Media LLC

  • Effects of C/N ratio on anaerobic co-digestion of cabbage, cauliflower, and restaurant food waste
    I. Beniche, J. Hungría, H. El Bari, J. A. Siles, A. F. Chica, and M. A. Martín

    Springer Science and Business Media LLC

  • Methane production from anaerobic digestion of date palm leaflet waste in Morocco
    Omar Kerrou, Nabila Lahboubi, Mohammed Bakraoui, Fadoua Karouach, Yasser El Gnaoui, Andrea Schüch, Walter Stinner, and Hassan El Bari

    Springer Science and Business Media LLC

  • Energetic potential of palm waste: Empty fruit bunch
    Nabila Lahboubi, Fadoua Karouach, Mohammed Bakraoui, Hassan El Bari, and Azzouz Essamri

    AIP Publishing

  • Kinetics models of methane production from anaerobic digestion
    Hassan El Bari, Mohammed Bakraoui, Yasser El Gnaoui, and Fadoua Karouach

    Elsevier

  • Energy Recovery from Palm Leaflet Waste by using Anaerobic Digestion and Thermochemical Conversion
    Omar Kerrou, Mohammed Bakraoui, Hassan El Bari, and Nabila Lahboubi

    IEEE
    Due to the increasing population around the globe, requirements for energy are increasing day after day. The conventional approaches for energy production may not be sufficient to meets these requirements. This necessitates energy production from different renewable sources through suitable techniques. In the present study, energy recovery from palm leaflet waste (PLW) in Morocco was examined. PLW is the by-product of palm farms and is usually burnt in the field or barren lands. This causes the emission of carbon dioxide (CO2) and of other air pollutants, as well as the outbreak of fires in the fields, which destroy a large number of palms. The purpose of this study was to identify and calculate the theoretical energetic potential (Ep) that can be recovered from PLW using anaerobic digestion (AD) and thermochemical conversion (TC) i.e., combustion. To estimate the theoretical heating value for TC, an elementary analysis was used. The processes of AD and TC on PLW led to the generation of energetic potentials (EP) of 69.81 GWh/y and 235.5 GWh/y, respectively. This work could be used as a guide by the countries having the same nature of biomass to make a preliminary energy study. This would ultimately lead to the development of processes that can end the energy crisis worldwide.

RECENT SCHOLAR PUBLICATIONS

  • (2024). Climate Change Vulnerability and Sustainable Tools for Mitigation and Adaptation Achievement in MENA Region. In: Leal Filho, W., Abubakar, I.R., da Silva, I., Pretorius
    H El Bari, S Habchi, M Morchid, M Cherqaoui
    SDGs in Africa and the Middle East Region. Implementing the UN Sustainable 2024

  • Enhancing biomethane production from food waste using olive pomace hydrochar: An optimization study
    S Habchi, N Lahboubi, M Asbik, H El Bari
    Environmental Advances 15, 100477 2024

  • Valorization of Moroccan Poultry Slaughterhouse Waste Using Anaerobic Digestion: Kinetic Study
    S Habchi, N Lahboubi, H El Bari
    Waste and Biomass Valorization, 1-13 2024

  • Effect of coupling dewaxing and chemical pretreatment on valorization of waxy fruit wastes
    K Cheenkachorn, EJ Panakkal, C Chatkaew, S Chuetor, PL Show, ...
    Biomass Conversion and Biorefinery, 1-11 2024

  • Catalytic Fast Pyrolysis of Lignocellulosic Biomass: Recent Advances and Comprehensive Overview
    H El Bari, CK Fanezoune, B Dorneanu, H Arellano-Garcia, T Majozi, ...
    Journal of Analytical and Applied Pyrolysis, 106390 2024

  • Improving methane production from palm leaflets waste with thermal and ultrasound pre-treatment
    O Kerrou, N Lahboubi, M Bakraoui, H El Bari
    Physics and Chemistry of the Earth, Parts A/B/C 132, 103482 2023

  • Toward Biomass Energy Development in Africa - Opportunities and Obstacles
    H El Bari, S Habchi
    31st European Biomass Conference and Exhibition, 5-8 June 2023 Bologna 2023

  • Comparative study of energetic potential from anaerobic digestion and direct combustion of date palm wastes
    N Lahboubi, O Kerrou, B Sarh, T Boushaki, V Belandria, Y El Khattabi, ...
    Clean Energy 7 (4), 747-754 2023

  • Appropriate Biochemical Conversion Technology for Organic Waste Recovery in Developing Countries
    H El Bari, S Habchi, F Karouach, N Lahboubi
    Waste Management in Developing Countries, 193-219 2023

  • Waste Generation, Characteristics, and Collection in Developing Countries
    F Karouach, H El Bari
    Waste Management in Developing Countries, 1-21 2023

  • The Waste Informal Sector Impact in Mena Region
    M Azaitraoui, A Ouatmane, F Bonnet, H El Bari
    Waste Management in Developing Countries, 111-133 2023

  • Waste Management Institutional and Legislation Aspects in Developing Countries
    F Bonnet, N Lahboubi, S Habchi, H El Bari
    Waste Management in Developing Countries, 91-109 2023

  • Response surface methodology for anaerobic digestion of waste from poultry slaughterhouse: Optimization of load and hydraulic retention time
    S Habchi, N Lahboubi, B Sallek, H El Bari
    Results in Engineering 18, 101215 2023

  • Energetic Potential of Coffee Waste from Anaerobic Digestion and Combustion.
    SAL Lahcen, SI Ahmed, N Lahboubi, H El Bari
    Ecological Engineering & Environmental Technology (EEET) 24 (2) 2023

  • Energetic Potential of Coffee Waste from Anaerobic Digestion and Combustion
    S Ait Lhaj Lahcen, SI Ahmed, N Lahboubi, H El Bari
    Ecological Engineering & Environmental Technology 24 2023

  • Biohydrogen production from fermentation of organic waste, storage and applications
    H El Bari, N Lahboubi, S Habchi, S Rachidi, O Bayssi, N Nabil, ...
    Cleaner Waste Systems 3, 100043 2022

  • Methane production from date seed cake (Phoenix dactylifera L.) using mesophilic fed-batch anaerobic digestion
    H Ourradi, N Lahboubi, S Habchi, H Hanine
    Cleaner Waste Systems 2, 100009 2022

  • Biological pre-hydrolysis and thermal pretreatment applied for anaerobic digestion improvement: Kinetic study and statistical variable selection
    Y El Gnaoui, A Frimane, N Lahboubi, C Herrmann, M Barz, HEL Bari
    Cleaner Waste Systems 2, 100005 2022

  • Production of Methane from Banana Peels by Mesophilic Anaerobic Digestion.
    F Ebich, R Hassikou, H El Bari, A Essamri, R Layachi
    Journal of Chemical Health Risks 12 (2) 2022

  • Experimental conception and thermo-energetic analysis of a solar biogas production system
    B Ouhammou, A Mohammed, S Sliman, A Jamil, B Mohammed, ...
    Case Studies in Thermal Engineering 30, 101740 2022

MOST CITED SCHOLAR PUBLICATIONS

  • Biogas production from recycled paper mill wastewater by UASB digester: Optimal and mesophilic conditions
    M Bakraoui, F Karouach, B Ouhammou, M Aggour, A Essamri, H El Bari
    Biotechnology reports 25, e00402 2020
    Citations: 82

  • Mesophilic anaerobic digestion of food waste: Effect of thermal pretreatment on improvement of anaerobic digestion process
    Y El Gnaoui, F Karouach, M Bakraoui, M Barz, H El Bari
    Energy Reports 6 (2), 417- 422 2020
    Citations: 58

  • Effect of plastic deformation on the microstructure and properties of amorphous polycarbonate
    C G'sell, H El Bari, J Perez, JY Cavaille, GP Johari
    Materials Science and Engineering: A 110, 223-229 1989
    Citations: 55

  • Anaerobic co-digestion assessment of olive mill wastewater and food waste: effect of mixture ratio on methane production and process stability
    Y El Gnaoui, F Sounni, M Bakraoui, F Karouach, M Benlemlih, M Barz, ...
    Journal of Environmental Chemical Engineering 8 (4), 103874 2020
    Citations: 46

  • Mesophilic anaerobic co-digestion of sewage sludge and orange peel waste
    A Serrano, J ngel Siles Lpez, AF Chica, M Martin, F Karouach, ...
    Environmental technology 35 (7), 898-906 2014
    Citations: 44

  • The biogas production from mesophilic anaerobic digestion of vinasse
    S Belhadj, F Karouach, H El Bari, Y Joute
    IOSR Journal of Environmental Science, Toxicology and Food Technology 5 (6 2013
    Citations: 39

  • Effects of C/N ratio on anaerobic co-digestion of cabbage, cauliflower, and restaurant food waste
    I Beniche, J Hungra, H El Bari, JA Siles, AF Chica, MA Martn
    Biomass Conversion and Biorefinery 11, 2133-2145 2021
    Citations: 33

  • Kinetics study of the methane production from experimental recycled pulp and paper sludge by CSTR technology
    M Bakraoui, F Karouach, B Ouhammou, M Aggour, A Essamri, H El Bari
    Journal of Material Cycles and Waste Management 21 (6), 1426-1436 2019
    Citations: 33

  • Effect of combined mechanical–ultrasonic pretreatment on mesophilic anaerobic digestion of household organic waste fraction in Morocco
    F Karouach, M Bakraoui, Y El Gnaoui, N Lahboubi, H El Bari
    Energy Reports 6 (2), 310–314 2020
    Citations: 31

  • Evaluation of the anaerobic co-digestion of sewage sludge and tomato waste at mesophilic temperature
    S Belhadj, Y Joute, H El Bari, A Serrano, A Gil, J Siles, AF Chica, ...
    Applied biochemistry and biotechnology 172, 3862-3874 2014
    Citations: 29

  • Kinetic study and experimental productions of methane production from UASB reactor treating wastewater from recycled pulp and paper for the continuous test
    M Bakraoui, Y El Gnaoui, N Lahboubi, F Karouach, H El Bari
    Biomass and Bioenergy 139, 105604 2020
    Citations: 26

  • Methane production from mesophilic fed-batch anaerobic digestion of empty fruit bunch of palm tree
    N Lahboubi, O Kerrou, F Karouach, M Bakraoui, A Schuch, ...
    Biomass Conversion and Biorefinery 11 2020
    Citations: 25

  • Biohydrogen production from fermentation of organic waste, storage and applications
    H El Bari, N Lahboubi, S Habchi, S Rachidi, O Bayssi, N Nabil, ...
    Cleaner Waste Systems 3, 100043 2022
    Citations: 24

  • A new system design and analysis of a solar bio-digester unit
    B Ouhammou, M Aggour, Frimane, M Bakraoui, H El Bari, A Essamri
    Energy conversion and management 198, 111779 2019
    Citations: 24

  • Effect of mixture ratio and organic loading rate during anaerobic co-digestion of olive mill wastewater and agro-industrial wastes.
    F Sounni, Y Elgnaoui, H El Bari, M Merzouki, M Benlemlih
    Biomass Conversion and Biorefinery 2021
    Citations: 23

  • Kinetics study of methane production from anaerobic digestion of sludge and wastewater recycled pulp and paper
    M Bakraoui, F Karouach, B Ouhammou, N Lahboubi, Y El Gnaoui, ...
    ICIPCE 2020 IOP Conf. Series: Materials Science and Engineering 946, 012009 2020
    Citations: 23

  • Evaluation of hydrothermal pretreatment for biological treatment of lignocellulosic feedstock (pepper plant and eggplant)
    K Hamraoui, A Gil, H El Bari, JA Siles, AF Chica, MA Martn
    Waste Management 102, 76-84 2020
    Citations: 23

  • Semi-continuous anaerobic co-digestion of cow manure and banana waste: effects of mixture ratio
    Y Joute, H El Bari, S Belhadj, F Karouach, Y Gradi, W Stelte, AB Bjerre
    Appl Ecol Environ Res 14 (2), 337-349 2016
    Citations: 23

  • Experimental conception and thermo-energetic analysis of a solar biogas production system
    B Ouhammou, A Mohammed, S Sliman, A Jamil, B Mohammed, ...
    Case Studies in Thermal Engineering 30, 101740 2022
    Citations: 20

  • Experimental biogas production from recycled pulp and paper wastewater by biofilm technology
    M Bakraoui, M Hazzi, F Karouach, B Ouhammou, H El Bari
    Biotechnology letters 41, 1299-1307 2019
    Citations: 20