Chemical and Biomolecular Engineering - Research Publications
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ItemA carbonic anhydrase inspired temperature responsive polymer based catalyst for accelerating carbon capture(ELSEVIER SCIENCE SA, 2018-01-15)
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ItemMechanisms for the ultrasonic enhancement of dairy whey ultrafiltration(ELSEVIER SCIENCE BV, 2005-08-01)
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ItemThe use of ultrasonic cleaning for ultrafiltration membranes in the dairy industry(ELSEVIER SCIENCE BV, 2004-10-01)
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ItemThe resilience of carbonic anhydrase enzyme for membrane-based carbon capture applications(ELSEVIER SCI LTD, 2017-07-01)
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ItemCO2 capture from pre-combustion processes-Strategies for membrane gas separation(ELSEVIER SCI LTD, 2010-09-01)
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ItemNo Preview AvailableSurface Engineering of Polypropylene Membranes with Carbonic Anhydrase-Loaded Mesoporous Silica Nanoparticles for Improved Carbon Dioxide Hydration(AMER CHEMICAL SOC, 2015-06-09)Carbonic anhydrase (CA) is a native enzyme that facilitates the hydration of carbon dioxide into bicarbonate ions. This study reports the fabrication of thin films of active CA enzyme onto a porous membrane substrate using layer-by-layer (LbL) assembly. Deposition of multilayer films consisting of polyelectrolytes and CA was monitored by quartz crystal microgravimetry, while the enzymatic activity was assayed according to the rates of p-nitrophenylacetate (p-NPA) hydrolysis and CO2 hydration. The fabrication of the films onto a nonporous glass substrate showed CO2 hydration rates of 0.52 ± 0.09 μmol cm(-2) min(-1) per layer of bovine CA and 2.6 ± 0.7 μmol cm(-2) min(-1) per layer of a thermostable microbial CA. The fabrication of a multilayer film containing the microbial CA on a porous polypropylene membrane increased the hydration rate to 5.3 ± 0.8 μmol cm(-2) min(-1) per layer of microbial CA. The addition of mesoporous silica nanoparticles as a film layer prior to enzyme adsorption was found to increase the activity on the polypropylene membranes even further to a rate of 19 ± 4 μmol cm(-2) min(-1) per layer of microbial CA. The LbL treatment of these membranes increased the mass transfer resistance of the membrane but decreased the likelihood of membrane pore wetting. These results have potential application in the absorption of carbon dioxide from combustion flue gases into aqueous solvents using gas-liquid membrane contactors.
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ItemImpact of Fly Ash on the Membrane Performance in Postcombustion Carbon Capture Applications(AMER CHEMICAL SOC, 2016-04-27)
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ItemIn situ layer-by-layer assembled carbonic anhydrase-coated hollow fiber membrane contactor for rapid CO2 absorption(ELSEVIER SCIENCE BV, 2016-09-15)
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ItemNo Preview AvailableClick poly(ethylene glycol) multilayers on RO membranes: Fouling reduction and membrane characterization(ELSEVIER SCIENCE BV, 2012-08-01)