Supercritical Adsorption Based CO2 Capture from N2/CO2 Mixture by Activated Carbon and Carbon Molecular Sieve
Kuerbanjiang Nuermaiti,
Ming Li
Issue:
Volume 5, Issue 3, May 2017
Pages:
27-36
Received:
10 May 2017
Published:
10 May 2017
Abstract: The adsorption equilibria of pure supercritical N2 and CO2 on the activated carbon Yigao-A and carbon molecular sieve CMS-200 were measured by the gravimetric method (IGA-001, Hiden) in the temperature region of 313.15-393.15 K and pressure region of 0-2 MPa. The adsorption kinetics of N2 and of CO2 on the activated carbon Yigao-A and carbon molecular sieve CMS-200 at 313.15 K in 50 kPa were tested. The Langmuir-Freundlich model was applied to analyze the adsorption isotherms. The adsorption kinetics was investigated with the Fickian model. The analysis of adsorption equilibria showed that a high temperature, low pressure is beneficial to the equilibria based selective adsorption of supercritical CO2 on the activated carbon Yigao-A and carbon molecular sieve CMS-200. The investigation of adsorption kinetics exposed that the carbon molecular sieve CMS-200 is able to separate CO2 from the N2/CO2 mixture by its kinetic effect, and lower temperature is preferred.
Abstract: The adsorption equilibria of pure supercritical N2 and CO2 on the activated carbon Yigao-A and carbon molecular sieve CMS-200 were measured by the gravimetric method (IGA-001, Hiden) in the temperature region of 313.15-393.15 K and pressure region of 0-2 MPa. The adsorption kinetics of N2 and of CO2 on the activated carbon Yigao-A and carbon molecu...
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Optimum Immobilization of Candida Antartica B Lipase on Natural Silica by RSM
Djossou Andriano Jospin,
Mazou Mouaïmine,
Tchobo Fidèle Paul,
Toukourou Akanho Chakirou,
Blin Joel,
Yao Kouassi Benjamin,
Soumanou Mansourou Mohamed
Issue:
Volume 5, Issue 3, May 2017
Pages:
43-48
Received:
22 February 2017
Accepted:
30 March 2017
Published:
23 May 2017
Abstract: The immobilization of the lipase of Candida antartica B (LCAB) by adsorption on a natural silica support carried out to develop the adsorbent local supports. Immobilization conditions and characterization of the immobilized enzyme were investigated. Response surface methodology (RSM) and 3-level–3-factor fractional factorial design were employed to evaluate the effects of immobilization parameters, such as immobilization time (5-25 hour), immobilization temperature (25-45°C), and enzyme/support ratio (0.1-0.5, w/w), on yield of lipase immobilization on the support. The optimum immobilization conditions were as follows: immobilization time 18 hours, immobilization temperature 20°C, and enzyme / support ratio 0.5 (w/w); with a yield immobilization of 56,13 mg / g. The immobilization lipase shows hydrolytic and synthesis satisfactory activity.
Abstract: The immobilization of the lipase of Candida antartica B (LCAB) by adsorption on a natural silica support carried out to develop the adsorbent local supports. Immobilization conditions and characterization of the immobilized enzyme were investigated. Response surface methodology (RSM) and 3-level–3-factor fractional factorial design were employed to...
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