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Articles by M.A. Bustam
Total Records ( 5 ) for M.A. Bustam
  A.K. Ziyada , Z. Man , T. Murugesan , M.A. Bustam and C.D. Wilfred
  In this study, trihexyltetradecylphosphonium octylsulfosuccinate [P6,6,6,14][docusate] was synthesised by anion metathesis using sodium octylsulfosuccinate salt. The molecular structure of the synthesised IL was confirmed by using 1H NMR and elemental analysis and also physical properties such as density, viscosity and refractive index were studied as a function of temperature at the atmospheric pressure. The experimental values of density and refractive index decrease linearly with increasing temperature. The density, refractive index and viscosity of the present IL at 298.15 K are 0.9631 g cm-3, 1.47190 and 1806.1 mPa.s respectively. The results show that this IL possesses higher viscosity, similar density and refractive index compared to the other trihexyltetradecylphosphonium ILs.
  A.K. Ziyada , C.D. Wilfred and M.A. Bustam
  In the present study, a novel phosphonium-based Dicationic Ionic Liquids (DCILs) were synthesized and characterized using 1H NMR and elemental analysis. Physiochemical properties such as density and viscosity are measured and reported for a temperature range of 293.15 to 353.15 K while the refractive index was measured in the range of 293.15 to 333.15 K. The start and decomposition temperatures are determined at heating rate 10°C min-1. The influence of the spacer alkyl chain on these properties is discussed. The results show that the new DCILs possess lower density higher thermal stability and higher viscosity compare to monocationic ionic liquids.
  M.S. Shaikh , A.M. Shariff , M.A. Bustam and Ghulam Murshid
  Sodium glycinate, a type of amino acid salt, is one of the potential solvent for carbon dioxide removal from various gas streams. In this study, physicochemical properties such as density, viscosity and refractive index of aqueous sodium glycinate at low concentrations were measured from 303.15 to 333.15 K. It was found that, the densities, viscosities and refractive indices of low concentrated sodium glycinate decrease with an increase in temperature, whereas with increasing the concentration in the solution, all three properties increase. The experimental data were correlated with respect to temperature and concentration by establishing the proper correlations.
  Syamsul B. Abdullah , Z. Man and M.A. Bustam
  The extraction of benzothiophene and xylene from n-dodecane with 1-hexyl-3-methylimidazolium tetrafluoroborate ([hmim][BF4]) ionic liquid (IL) was investigated. The influence of mass ratio of oil to IL, extracting time and operating temperature were studied for an optimized condition of the benzothiophene (BT) and xylene removal. The optimization process was analyzed using Central Composite Face-Centered Experimental Design by Design Expert Version 6.0.6 (Stat-Ease, USA). The satisfactory optimum mild conditions obtained were at a mass ratio (IL/oil) of 0.73 with extracting time of 10 min at operating temperature of 60°C. The adequacy of the model equation for predicting the optimum response values was validated using experimental data.
  M.K. Wong , Ghulam Murshid , M.A. Bustam , Siphesihle Tyutyu and A.M. Shariff
  Carbon dioxide (CO2) is one of the major causes of accelerating global warming. It is thus important to employ an efficient method to capture CO2. Absorption is the most established technique to separate CO2 and amines are most commonly used as solvent. Methyldiethanolamine (MDEA), which is a tertiary amine, is known for its high equilibrium CO2 loadings. Similar to MDEA, sterically hindered amine, such as 2-amino-2-methyl-l-propanol (AMP) which also demonstrates high CO2 solubility, was proposed as a new commercially attractive solvent for CO2 removal. In recent years, many studies were carried out on piperazine (PZ) as an activator to enhance CO2 absorption. This study aims to extend the experimental data for solubility of CO2 in aqueous solutions of AMP/PZ and MDEA/PZ at higher pressures. In present study, CO2 solubility in aqueous mixture AMP/PZ and MDEA/PZ systems was measured at varying pressures, temperatures and concentrations. The experiments were conducted at temperatures 303.15 and 333.15 K and at pressures 4, 8, 12 and 16 bar. The AMP and MDEA concentration ranges from 25-50 mass % while PZ concentration varies from 0-8 mass %. Solubility of CO2 was determined from the pressure drop due to absorption of CO2 into solvent within a high pressure equilibrium cell. Substantial increase in CO2 loading was observed when a small amount of PZ was added to the amine solutions, proving PZ an effective promoter to enhance CO2 absorption. Mixture AMP/PZ shows higher CO2 absorption capacity than MDEA/PZ at the same pressure and temperature.
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