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    Thermogravimetric Analysis of Char Waste from the Air Gasification of Empty Fruit Bunch Briquette

    Nyakuma Bemgba Bevan, Mazangi Mojtaba, Johari Anwar, Ahmad Arshad, Tuan Abdullah Tuan Amran
    MATEC web of conferences, 01 July 2014, Vol.13, p.02004 [Peer Reviewed Journal]
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    Title: Thermogravimetric Analysis of Char Waste from the Air Gasification of Empty Fruit Bunch Briquette
    Author: Nyakuma Bemgba Bevan; Mazangi Mojtaba; Johari Anwar; Ahmad Arshad; Tuan Abdullah Tuan Amran
    Subject: Engineering
    Description: The thermal decomposition behavior of char waste produced from the air gasification of Empty Fruit Bunch (EFB) briquette was examined using thermogravimetric analysis (TGA). A comparison between the thermal decomposition behavior of char waste and EFB briquette is also presented. The results indicate that the char waste produced decreased from 22 % to 18 % with increasing temperature from 600 °C to 700 °C during gasification. This is due to the effect of high temperatures on the primary char decomposition reactions. It was observed that char degradation occurs in two steps; char degradation I & II with weight losses of 17 % and 32 % respectively. This showed that only ~ 50 % char was decomposed during thermal analysis, hence higher temperatures are required to ensure complete decomposition. The TGA curve for EFB briquette showed that complete thermal decomposition of EFB briquette occurs in four stages namely; drying, devolatization, reduction and char degradation. The most...
    Is part of: MATEC web of conferences, 01 July 2014, Vol.13, p.02004
    Identifier: 2261-236X (E-ISSN); 10.1051/matecconf/20141302004 (DOI)

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    Hydrogen Production From Catalytic Ethanol Reforming In Supercritical Water

    Tuan Abdullah, Tuan Amran
    UWSpace - Theses (University of Waterloo)
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    Title: Hydrogen Production From Catalytic Ethanol Reforming In Supercritical Water
    Author: Tuan Abdullah, Tuan Amran
    Publisher: University of Waterloo
    Date: 2009
    Subject: Ethanol Reforming ; Supercritical Water ; Catalyst ; Co/Ysz ; Catalytic ; Chemical Engineering
    Description: As a means to produce high pressure hydrogen in order to reduce compression penalty, we propose to reform liquid fuel (e.g., bio-ethanol) in supercritical water (pressure above 221 bar and temperature greater than 374°C). Catalytic ethanol reforming in supercritical water for hydrogen production has been carried out in a high pressure packed bed reactor made of Inconel-625. Since Inconel-625 contains mainly nickel, it is expected that the reactor itself can be active toward ethanol reforming. Therefore, a series of tests were first performed in the empty reactor, whose results are a benchmark when studying reforming in the presence of a catalyst. Ethanol reforming in the empty reactor was studied in the temperature range of 450 to 600°C and showed coking/plugging problem at 575°C and above. The ethanol conversion with the empty reactor could be as high as 25% at 550°C and residence time of about one minute. The main reaction products with the empty reactor were H2, CO and...

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    Integration of phosphoric acid onto radiation grafted poly (2,3-epoxypropyl methacrylate) -PP/PE non-woven fabrics aimed copper adsorbent via response surface method

    Othman, Nor, Selambakkannu, Sarala, Ting, Teo, Hashim, Azian, Tuan Abdullah, Tuan
    Journal of Polymer Research, 2019, Vol.26(12), pp.1-13 [Peer Reviewed Journal]
    Springer Science & Business Media B.V.
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    Title: Integration of phosphoric acid onto radiation grafted poly (2,3-epoxypropyl methacrylate) -PP/PE non-woven fabrics aimed copper adsorbent via response surface method
    Author: Othman, Nor; Selambakkannu, Sarala; Ting, Teo; Hashim, Azian; Tuan Abdullah, Tuan
    Subject: Radiation induced grafting ; 2,3-epoxypropyl methacrylate ; PP/PE non-woven fabric ; Phosphoric acid ; Response surface method
    Description: This study focuses on preparation of new adsorbent for copper by radiation induced grafting (RIG) of 2,3-epoxypropyl methacrylate (EMPA) onto PP/PE non-woven fabric (NWF) with subsequent functionalization with phosphoric acid (PA). The density of phosphoric acid incorporated onto EMPA-g-NWF was tuned by reaction parameters optimization such as PA concentration, reaction temperature, reaction time and EMPA grafting yield by using response surface method (RSM) engaging Box-Behnken design (BBD). Maximum PA density of 2.0 mmol/g −1 was estimated at optimum reaction parameter of 45.50% PA concentration, 70 °C reaction temperature, 2.76 h reaction time and 132.68% grafting yield. The deviation between optimum experimental and projected phosphoric acid density was taken into consideration, in order to verify the consistency of RSM in predicting the yield and optimizing the functionalization reaction parameters. The PA-functionalized EMPA-g-NWF was assessed with X-ray diffraction (XRD), Fourier-transform...
    Is part of: Journal of Polymer Research, 2019, Vol.26(12), pp.1-13
    Identifier: 1022-9760 (ISSN); 1572-8935 (E-ISSN); 10.1007/s10965-019-1963-6 (DOI)

    • Several versions

    Ni-based catalysts for steam reforming of tar model derived from biomass gasification

    Tan Ru Shien, Alir Afizah, Mohamad Saiful Azam, Md Isa Khairuddin, Tuan Abdullah Tuan Amran
    E3S web of conferences, 01 January 2019, Vol.90, p.01015 [Peer Reviewed Journal]