Effect of β-cyclodextrin on dissolution of methane in water

In this research the effects of beta-cyclodextrin (CD) on dissolution of methane in water have been investigated. The tests were performed at pressures 3 and 5 bars and temperatures 1, 3, 5, 10, 15, 20, 25 and 30 degrees C. Three solutions constituted from different concentrations of CD were used. Each solution volume was 300 CC. Methane was contacted with each solution in a cell and data of gas pressure vs. time and the total absorption capacity were collected. Addition of 0.5 wt% cyclodextrin increased the capacity of methane absorption as much as 14.63% at temperature 1 degrees C and primary pressure 3 bars, while the effect of its addition was reduced with temperature increase. Utilization of CD improved the pressure reduction slope of methane at low temperatures. Finally the graphs P-T-t at two initial pressures 3 and 5 bars were plotted for each solution. Crown Copyright (C) 2010 Published by Elsevier B.V. on behalf of The Institution of Chemical Engineers. All rights reserved.