Universiti Teknologi Petronas

About: Universiti Teknologi Petronas is a education organization based out in Ipoh, Malaysia. It is known for research contribution in the topics: Adsorption & Ionic liquid. The organization has 6127 authors who have published 11284 publications receiving 119400 citations.

Solubilities of Carbon Dioxide and Densities of Aqueous Sodium Glycinate Solutions before and after CO2 Absorption

Abstract: The densities of aqueous solutions of sodium glycinate (SG) were measured for a range of concentrations [(1, 5, 10, 15, 20, and 30) % wt] and at a temperature range (298.15 to 353.15) K. The solubility of CO2 in aqueous solution of sodium glycinate was measured for the same concentration range and at two temperatures (298.15 and 313.15) K, over CO2 partial pressure ranging from (100 to 2500) kPa. The densities of aqueous solutions of sodium glycinate after the absorption were also measured at the same conditions of the solubility measurements. It was found that density of aqueous solutions of sodium glycinate increases as the molar concentration increases and decreases with an increase in temperature. The solubilities of CO2 are reported as loading capacity (mol CO2/mol SG) as a function of partial pressure of CO2 at the corresponding temperature. It was found that CO2 solubility increases with increase in CO2 partial pressure. It was also found that solubility of sodium glycinate solution decreases with ...

Syngas Production from Steam Gasification of Palm Kernel Shell with Subsequent CO2 Capture Using CaO Sorbent: An Aspen Plus Modeling

Abstract: The current work is based on the simulation modeling of steam gasification of palm kernel shell (PKS) with CO2 capture through sorbent (CaO) using Aspen plus. The simulation model is developed using a Gibbs free energy minimization method. The objective of this work is to investigate the effect of key parameters like temperature, steam/biomass ratio, and CaO/biomass ratio on syngas yield. The system performance was also evaluated through carbon conversion efficiency, cold gas efficiency and gasification efficiency, lower and higher heating values by varying the gasification temperature, steam/biomass ratio, and CaO/biomass ratio. The H2 concentration increased from 65 to 79.32 vol % with the increase of temperature from 650 to 700 °C. The CO2 content was reduced from 20 to 5.32 vol % by increase in CaO/biomass ratio from 0.5 to 1.42. The maximum hydrogen content predicted is 79.32 vol %, and the minimum CO2 content is 5.42 vol % found at operating parameters including a temperature of 700 °C, steam/biomas...