Phase Equilibria of CO2 Hydrate Formation in Glucoamylase Aqueous Solutions

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• 作者：Jing Bai ; Lu Zhang ; Jing Li ; Teng-bo Liang ; Chun Chang ; Shu-qi Fang ; Xiu-li Han ; Deqing Liang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2016
• 出版时间：February 11, 2016
• 年：2016
• 卷：61
• 期：2
• 页码：891-895
• 全文大小：281K
• ISSN：1520-5134

文摘

In this research, the effects of water-soluble glucoamylase at four concentrations of 2.79, 5.58, 13.95, and 27.9 wt % on CO₂ hydrate formation phase equilibrium have been investigated. Traditional isochoric method was employed in 300 mL autoclave to provide these phase equilibrium data. The results are also compared with the hydrate formation in pure water and tetra-n-butyl ammonium bromide (TBAB) solution. The concentration of glucoamylase for CO₂ hydrate formation has optimum value. When the concentration of glucoamylase was 5.58 wt %, it has positive effect on lowering CO₂ hydrate formation requirements. Compared with TBAB, the promotion effect of glucoamylase is a little bit milder. When the concentrations of glucoamylase were 27.9 and 13.95 wt %, the glucoamylase has inhibiting effect on hydrate formation. Compared with methanol, the inhibiting effect of glucoamylase system is a little bit milder.