Statistical Analysis of the Effects of Aluminum Oxide (Al۲O۳) Nanoparticle, TBAC, and APG on Storage Capacity of CO۲ Hydrate Formation

In this study, the effect of various concentrations of alkyl polyglycoside (APG), aluminum oxide nanoparticles (Al۲O۳), and tetra-n-butyl ammonium chloride (TBAC) on the storage capacity of CO۲ hydrate formation are investigated. For this aim, a laboratory system is developed. The experiments are carried out in the pressure range of ۲۵ to ۳۵ bar and the temperature range of ۲۷۵.۱۵ K to ۲۷۹.۱۵ K. The Experimental results showed that by increasing the system pressure at a constant temperature, the storage capacity increased by ۴۸% on average. Decreasing the system temperature at constant pressure increased the storage capacity by ۲۳% on average. Adding APG to the system at constant temperature and pressure increases the storage capacity by ۷۵% on average, while adding nanoparticles of aluminum oxide increases the storage capacity by ۵% and TBAC ۳۸% on average. For statistical analysis of laboratory data, Design-Expert software and Response Surface test design method, and Quadratic model are employed and a mathematical relationship is developed with R۲ = ۰.۹۹۸۷ to estimate CO۲ storage capacity in hydrates. The optimum amount of storage capacity equal to ۱۳۷.۴۷۶ has been reached at ۳۴.۵۵۸ bar, ۲۷۶.۰۸۵ K, ۲.۸۲۵ wt% of TBAC, ۹۵۶.۷۳۳ ppm APG, ۲.۴۳۶ wt % Al۲O۳.

کلیدواژه ها:

Gas hydrates ، Storage capacity ، Aluminum oxide nanoparticle ، APG ، statistical analysis