4TH International Congress on Technology - Engineering & SCIENCE - Kuala Lumpur - Malaysia (2017-08-05)

Density Measurement Of Aqueous Solution Of Tbaoh At Different Temperature And Concentration
Abstract: Global warming has attracted more attention in the last few decades. Carbon dioxide has the highest contribution in global warming among greenhouse gases. Among the various technologies that have been developed to capture carbon dioxide, absorption is the most mature and feasible technology. The main challenge for the carbon dioxide capture from power plant flue gases are the reduction of process cost by finding a new solvent. Conventional solvents have some issues related to corrosion, volatility, regeneration cost. Recently, ionic liquids have been introduced as a potential solvents for carbon dioxide capture. Ionic liquids properties such as low vapor pressure and high thermal stability motivated researchers to investigate different types of ionic liquids. Physicochemical properties of the solvent is crucial for finding an effective solvent. In this work, density, molar volume, and excess molar volume are investigated for a new proposed solvent tetrabutylammonium hydroxide. Densities of aqueous tetrabutylammonium hydroxide solution (2.5, 10 and 20 wt %) were investigated over a temperature range of 298.15 to 333.15 K and at atmospheric pressure. The experimental densities data were estimated and correlated with temperature using the least square method. Derived properties, thermal expansion (σp), molar volume (Vm), and excess molar volumes (V_m^E) were calculated and interpreted. The density of aqueous tetrabutylammonium hydroxide solutions decreases when the temperature and concentration increased. The results compared with MEA and found to show opposite behavior as density of MEA increased with increasing temperature. The predicted densities values from correlations are in good agreement with measured values. The obtained results from derived properties for a binary system, σp, Vm and V_m^E are interpreted based on intermolecular interactions.
Nur Ani Kartikawati, Omar Nashed, Bhajan Lal, Azmi Mohd Bin Sharif