Study on Preparation of Immobilized Alkaline Protease and Its Performance
Yiming Li,
Fei Xue,
Dengxin Li
Issue:
Volume 5, Issue 3, June 2017
Pages:
35-42
Received:
10 May 2017
Accepted:
Published:
10 May 2017
Abstract: The nano-Fe3O4 particles were prepared by hydrothermal method. Cellulose-based magnetic Fe3O4 was prepared by adding cellulose solution dissolved in sodium hydroxide / thiourea / urea system. The basic protease was used as the catalyst and glutaraldehyde was used as the crosslinking agent, The production of magnetic recyclable immobilized enzyme can greatly reduce the cost of hydrolysis of sludge. The aldehyde groups in the glutaraldehyde and the amino groups in the protein can be stably crosslinked by coupling. The immobilization effect of nanometer Fe3O4 was reflected by investigating the activity of immobilized enzyme and immobilization rate of enzyme under different conditions.
Abstract: The nano-Fe3O4 particles were prepared by hydrothermal method. Cellulose-based magnetic Fe3O4 was prepared by adding cellulose solution dissolved in sodium hydroxide / thiourea / urea system. The basic protease was used as the catalyst and glutaraldehyde was used as the crosslinking agent, The production of magnetic recyclable immobilized enzyme ca...
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Study of SO2 Adsorption on Porous SiO2 Particles Using a Micro-Reactor System
Yumei Wu,
Xiaoling Zha,
Jin Xu
Issue:
Volume 5, Issue 3, June 2017
Pages:
43-49
Received:
14 May 2017
Accepted:
Published:
16 May 2017
Abstract: Immobilized ionic liquids (ILs) with high selective adsorption capacity of SO2 from N2, on porous solid particles such as SiO2, has potential applications on SO2 emission control. As the first step towards the establishment of a comprehensive model for SO2 adsorption on supported IL, the performance of neat SiO2, the support material, was evaluated in this work. A series of adsorption/desorption breakthrough experiments were carried out using a micro-reactor system to investigate the effects of concentration, particle structure and temperature. Theoretical analyses of experimental observations were used to identify the adsorption mechanisms and relative importance of mass transfer processes.
Abstract: Immobilized ionic liquids (ILs) with high selective adsorption capacity of SO2 from N2, on porous solid particles such as SiO2, has potential applications on SO2 emission control. As the first step towards the establishment of a comprehensive model for SO2 adsorption on supported IL, the performance of neat SiO2, the support material, was evaluated...
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