Browsing Gas Processing Center by Author "Mahmud, Nafis"
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Adsorption of 4-Nitrophenol onto Iron Oxide Bentonite Nanocomposite: Process Optimization, Kinetics, Isotherms and Mechanism
Ewis, Dina; Ba-Abbad, Muneer M.; Benamor, Abdelbaki; Mahmud, Nafis; Nasser, Mustafa; El-Naas, Muftah; Mohammad, Abdul Wahab... more authors ... less authors ( Springer Science and Business Media Deutschland GmbH , 2022 , Article)Despite its importance in chemical industry, 4-Nitrophenol (4-NP) is a persistent organic pollutant that has serious effects on the ecosystem. In the present study, Box–Behnken design in response surface methodology was ... -
Adsorption of Congo Red Dye Using Activated Carbon-Fe3O4 Composite
Mahmud, Nafis; Yasser, Ludan; Mahmoud, Rahaf Belal Hafiz; Benamor, Abdelbaki ( Qatar University Press , 2023 , Conference Paper)Activated Carbon-Fe3O4 composites were synthesized using co-precipitation method and used in batch experiments to adsorb Congo red dyes. The effect of adsorbent dosage, temperature and initial dye concentration was ... -
Chemical kinetics of carbon dioxide in the blends of different amino acid salts and methyldiethanolamine
Mahmud, Nafis; Benamor, Abdelbaki; Nasser, Mustafa S.; Ba-Abbad, Muneer M.; El-Naas, Muftah H.; Qiblawey, Hazim... more authors ... less authors ( John Wiley and Sons Ltd , 2020 , Article)In the present study, the reaction kinetics of carbon dioxide (CO2) with two blends of N-methyldiethanolamine; potassium salts of taurine and potassium salts of glycine were investigated. The experiments were performed ... -
Effective Heterogeneous Fenton-Like degradation of Malachite Green Dye Using the Core-Shell Fe3O4@SiO2 Nano-Catalyst
Mahmud, Nafis; Benamor, Abdelbaki; Nasser, Mustafa S.; Ba-Abbad, Muneer M.; El-Naas, Muftah H.; Mohammad, Abdul Wahab... more authors ... less authors ( Wiley-Blackwell , 2021 , Article)In this study, the application of the core-shell Fe3O4@SiO2 nano-catalysts for fenton-like degradation of malachite green dye has been presented. The nano-catalysts were prepared using a combination of solvothermal and ... -
Enhanced electrochemical conversion of CO2 into formic acid using PbSO4/AtSn electrode: Catalyst synthesis and process optimization
Muhammad, Arsalan; Ewis, Dina; Mahmud, Nafis; Ba-Abbad, Muneer M.; Khaled, Mazen; El-Naas, Muftah H.... more authors ... less authors ( Elsevier , 2023 , Article)Electrochemical carbon dioxide (CO2) reduction is among the most promising and effective methods for producing valuable fuels while simultaneously addressing global warming. Numerous metal-based materials showed promising ... -
Enhanced Removal of Diesel Oil Using New Magnetic Bentonite-Based Adsorbents Combined with Different Carbon Sources
Ewis, Dina; Mahmud, Nafis; Benamor, Abdelbaki; Ba-Abbad, Muneer M.; Nasser, Mustafa; El-Naas, Muftah... more authors ... less authors ( Springer Science and Business Media Deutschland GmbH , 2022 , Article)In this work, new magnetic bentonite-based adsorbents combined with different carbon sources, namely, reduced graphene oxide and multiwall carbon nanotubes, were synthesized via co-precipitation method. The synthesized ... -
Evaluation of parameters controlling calcium recovery and CO2 uptake from desalination reject brine: An optimization approach
Mahmud, Nafis; Ibrahim, Mohamed H.; Fraga Alvarez, Daniela V.; Esposito, Daniel V.; El-Naas, Muftah H. ( Elsevier Ltd , 2022 , Article)A multistage process scheme for extracting valuable minerals from desalination reject brine while simultaneously sequestering CO2 has been proposed. As a part of the proposed scheme, simultaneous removal of calcium ions ... -
Magnesium recovery from desalination reject brine as pretreatment for membraneless electrolysis
Mahmud, Nafis; Alvarez, Daniela V. Fraga; Ibrahim, Mohamed H.; El-Naas, Muftah H.; Esposito, Daniel V. ( Elsevier B.V. , 2022 , Article)Alkali-earth metals pose a significant challenge to water treatment technologies and electrochemical processes due to their propensity to precipitate as metal hydroxides, which can deposit on membranes and/or electrodes ... -
Reaction kinetics of carbon dioxide with aqueous solutions of l-Arginine, Glycine & Sarcosine using the stopped flow technique
Mahmud, Nafis; Benamor, Abdelbaki; Nasser, Mustafa S.; Al-Marri, Mohammed J.; Qiblawey, Hazim; Tontiwachwuthikul, Paitoon... more authors ... less authors ( Elsevier , 2017 , Article)The use of amino acids as potential solvents for carbon dioxide (CO2) capture has been considered by a number of researchers. However, very little is known about the kinetics and mechanism of amino acids-CO2 reactions. In ... -
Synthesis and Characterization of Fe3O4 Nanoparticles Using Different Experimental Methods
Mahmud, Nafis; Nasser, Mustafa S.; El-Naas, Muftah H.; Ba-Abbad, Muneer M.; Wahab Mohammad, Abdul; Mansour, Said; Benamor, Abdelbaki... more authors ... less authors ( Institute of Physics Publishing , 2020 , Conference Paper)This paper reports a comparative study on the synthesis of Fe3O4 nanoparticles using three different methods, namely; Co-precipitation, Sonochemical and Solvothermal methods. Ferric chloride hexahydrate (FeCl3.6H2O) and ...