Browsing by Author "Marliza T.S."
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Publication Comparative adsorption isotherm for beryllium oxide/ iron (Iii) oxide toward co2 adsorption and desorption studies(Trans Tech Publications Ltd, 2020) ;Lahuri A.H. ;Yarmo M.A. ;Abu Tahari M.N. ;Marliza T.S. ;Tengku Saharuddin T.S. ;Wun Fui M.L.Dzakaria N.Surface modification of Fe2O3 by adding BeO was synthesized and calcined at different temperatures of 200-600 °C. The adsorbents were characterized by using XRD, N2 adsorption-desorption isotherm prior to performing CO2 adsorption and desorption studies. The CO2 adsorption data were analyzed using adsorption isotherm models such as Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich. BeO/Fe2O3-300 that calcined at 300 °C showed the most efficient adsorbent with physisorption and chemisorption were measured at 5.85 and 45.88 mg/g respectively. The CO2 adsorption notably best fitted with Freundlich isotherm with R2 = 0.9897 and calculated adsorption capacity closest to experimental data. This implies the CO2 adsorption process was governed by multilayer adsorption on the heterogeneous surface of the adsorbent. The mean free energy of adsorption (E=3.536 kJ/mol) from Dubinin-Radushkevich and heat of adsorption (bT=3.219 kJ/mol) from the Temkin model support that the adsorption process is physical phenomena. © 2020 Trans Tech Publications Ltd, Switzerland. - Some of the metrics are blocked by yourconsent settings
Publication Sustainable Production of Bioenergy(Springer Verlag, 2020) ;Taufiq-Yap Y.H. ;Ahmad Farabi M.S. ;Syazwani O.N. ;Ibrahim M.L. ;Marliza T.S. ;Faculty of Science and Technology ;Universiti Putra Malaysia (UPM) ;Universiti Sains Islam Malaysia (USIM)Universiti Teknologi MARA (UiTM)Biodiesel or known as the fatty acid alkyl ester is a renewable and environmental-friendly biofuel which normally was derived from the triglycerides or fatty acids. The sustainability of the biodiesel always concerns and covers the cost of the production, energy supply and demand (net energy balance), sustainability of larger crop production or feedstock supply, acceptance of the country and economic stability. Above all, the lack of petroleum production, the increase in fuel efficiency and affordable by the public are significant reasons for the biodiesel to become one of the most important energy supplies for our future. This chapter will cover and survey the dimension of potential sustainability, current and future directions of the biodiesel production worldwide. � Springer Nature Singapore Pte Ltd. 2020.