Browsing Center for Sustainable Development Research by Author "Thaher, Mahmoud"
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A comparative physicochemical property assessment and techno-economic analysis of biolubricants produced using chemical modification and additive-based routes
Khan, Shoyeb; Das, Probir; Quadir, Mohammed Abdul; Thaher, Mahmoud; Annamalai, Senthil Nagappan; Mahata, Chandan; Hawari, Alaa H.; Al Jabri, Hareb... more authors ... less authors ( Elsevier , 2022 , Article)Several edible and non-edible oil sources are currently being developed as renewable basestocks for biolubricant production. However, these feedstocks possess undesirable physicochemical properties limiting their lubricant ... -
A feasibility study of utilizing hydrothermal liquefaction derived aqueous phase as nutrients for semi-continuous cultivation of Tetraselmis sp.
Das, Probir; AbdulQuadir, Mohammad; Thaher, Mahmoud; Khan, Shoyeb; Chaudhary, Afeefa Kiran; Al-Jabri, Hareb... more authors ... less authors ( Elsevier Ltd , 2020 , Article)The feasibility of substituting 50% nutrients by aqueous phase liquid (APL), derived from hydrothermal liquefaction of Tetraselmis sp. biomass, in a semi-continuous cultivation of Tetraselmis sp. was studied. Growth ... -
Effect of harvesting methods on the energy requirement of Tetraselmis sp. biomass production and biocrude yield and quality
Das, Probir; Khan, Shoyeb; Thaher, Mahmoud; AbdulQuadir, Mohammed; Hoekman, S. Kent; Al-Jabri, Hareb... more authors ... less authors ( Elsevier Ltd , 2019 , Article)A halo-tolerant Tetraselmis sp. was grown in a 100,000 L raceway pond in the Qatari desert environment. As the biomass density reached 0.679 g/L, after 7 days, five different harvesting methods (i.e., cross-flow filtration, ... -
Effect of the induced dielectrophoretic force on harvesting of marine microalgae (Tetraselmis sp.) in electrocoagulation
Hawari, Alaa H.; Alkhatib, Afnan M.; Das, Probir; Thaher, Mahmoud; Benamor, Abdelbaki ( Elsevier , 2020 , Article)In this study, a new electrocoagulation electrode configuration has been investigated in order to induce dielectrophoretic (DEP) force for the enhanced harvesting of marine microalgae (Tetraselmis sp.). Asymmetrical aluminum ... -
Pilot-scale crossflow ultrafiltration of four different cell-sized marine microalgae to assess the ultrafiltration performance and energy requirements
Khan, Shoyeb; Das, Probir; Abdulquadir, Mohammed; Thaher, Mahmoud; Al-Ghasal, Ghamza; Hafez Mohammed Kashem, Abdurahman; Faisal, Mohamed; Sayadi, Sami; Al-Jabri, Hareb... more authors ... less authors ( Elsevier , 2023 , Article)Four marine microalgae (e.g., Tetraselmis, Picochlorum, Dunaliella, and Synechococcus) with different cell sizes were harvested using pilot-scale ultrafiltration. Average permeate fluxes were 16.75, 19, 25.35, and 33.75 ... -
Production of biolubricant from renewable feedstocks from Qatar
Das, Probir; Khan, Shoyeb Rashid; Abdul Quadir, Mohammed; Thaher, Mahmoud; Chaudhary, Afeefa Kiran; Al Jabri, Hareb... more authors ... less authors ( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)Due to increase in environmental pollution and decline in petroleum reserves, there is an increase in the demands of developing alternative renewable bio-based products. Petroleum and lubricant manufacturing companies are ... -
Solar cultivation of microalgae in a desert environment for the development of techno-functional feed ingredients for aquaculture in Qatar
Rihab, Rasheed; Thaher, Mahmoud; Younes, Nadin; Bounnit, Touria; Schipper, Kira; Nasrallah, Gheyath K.; Al Jabri, Hareb; Gifuni, Imma; Goncalves, Olivier; Pruvost, Jeremy... more authors ... less authors ( Elsevier , 2022 , Article)The demand for aquaculture feed will increase in the coming years in order to ensure food security for a growing global population. Microalgae represent a potential fish-feed ingredient; however, the feasibility of their ... -
A study to investigate the energy recovery potential from different macromolecules of a low-lipid marine Tetraselmis sp. biomass through HTL process
Aljabri, Hareb; Das, Probir; Khan, Shoyeb; AbdulQuadir, Mohammad; Thaher, Mahmoud; Hawari, Alaa H.; Al-Shamary, Noora Mahmoud... more authors ... less authors ( Elsevier , 2022 , Article)This study investigated the hydrothermal liquefaction (HTL) of extracted major macromolecules from Tetraselmis sp. biomass. The carbohydrate fraction was first recovered from Tetraselmis biomass using pressurized heated ...