How to Lengthen the Long-Term Stability of Enzyme Membranes: Trends and Strategies
نویسندگان
چکیده
In this review, factors that contribute to enhancing the stability of immobilized enzyme membranes have been indicated, and the solutions to each factor, based on examples, are discussed. The factors are divided into two categories: one is dependent on the improvement of enzyme properties, and the other, on the development of supporting materials. Improvement of an enzyme itself would effectively improve its properties. However, some novel materials or novel preparation methods are required for improving the properties of supporting materials. Examples have been provided principally aimed at improvements in membrane stability.
منابع مشابه
Correlating Physicochemical Properties of Commercial Membranes with CO2 Absorption Performance in Gas-Liquid Membrane Contactor
The gas-liquid membrane contactor (GLMC) is a promising alternative gas absorption/desorption configuration for effective carbon dioxide (CO2 ) capture. The physicochemical properties of membranes may synergistically affect GLMC performances, especially during the long-term operations. In this work, commercial polypropylene (PP) and polyvinylidene fluoride (PVDF) hollow fiber (HF) membranes wer...
متن کاملFabrication of Crosslinkable Hollow Fiber Membranes for Pervaporation Dehydration
Integrally-skinned asymmetric Polyetherimide/Poly (vinyl alcohol) (PEI/PVA) hollow fber membranes for pervaporation dehydration were fabricated by non-solvent induced phase inversion. PVA inside the PEI matrix could be crosslinked to provide membrane performance stability during long term operation. The effects of different PEI/PVA blend ratio, external coagulant type and...
متن کاملEffect of Short- and Long-term Memory on Trend Significancy of Mean Annual Flow by Mann-Kendall Test
Climate variability and change is threatening water resources around the world. One hundred and fourtheen (114) stations from Reference Hydrometric Basin Network (RHBN) around Canada with at least 30 years continuous data (up to 2011) were selected to study the trend in mean annual runoff for different periods of 30 to 100 years in step 10 years by non-parametric Mann-Kendall test. Effect of sh...
متن کاملApplying Non-Contractual Methods and Quantitative Terms to Increase the Durability of Long-Term Natural Gas Sale Agreements
The success of long-term gas sales contracts is largely related to the ability of the seller and the buyer to adapt the terms of the contract to their conditions, infrastructure, facilities and market. If the buyer's demand changes from season to season and seasonally fluctuates, problems and complexities arise for the seller and he may need to provide the excess capacity to produce, refine and...
متن کاملTreatment of Newly Diagnosed and Relapsed Hodgkin Lymphoma in Children
Hodgkin lymphoma (HL) accounts for about 10% of all childhood cancers. Five-year survival rates with modern therapies are now approaching >90-95% as a consequence of its significant sensitivity to both chemotherapy and radiation. The current challenge is to determine how much therapy is needed to improve survival and how to adapt treatment to the patient to prevent these long term toxicities. T...
متن کامل