The Effect of Concentration of Modified Cellulose NanoFibers by phthalimide on the Adsorption Rate of Carbon Dioxide (CO2)

Document Type : Research Paper

Authors

1 Ph.D. student, Department of wood and paper science and technology, Faculty of natural resources, University of Tehran, Karaj, Iran

2 Associate Prof., Department of wood and paper science and technology, Faculty of natural resources, University of Tehran, Karaj, Iran

3 Professor, Department of chemical technologies, Iranian research organization for science and technology (IROST), Tehran, Iran

Abstract

The purpose of this study is to fabricate air filters with various concentrations of cellulose nanofibres (CNFs) in order to evaluate its ability in the process of adsorbing (to adsorb) carbon dioxide (CO2). In this study, we make use of freezing drying method for making filters with three different concentrations (1, 1.5 and 2%). SEM results show that increasing the concentration of CNFs increase the surface area but decreases the porosity and pore diameter. The results are also confirmed by the BET test. Also, mechanical properties and CO2 adsorption test were investigated. The results show that decreasing the concentration of CNFs decreases mechanical strength and carbon dioxide adsorption such that the minimum mechanical strength and adsorption of CO2 were for unmodified CNFs with 1% concentration and the highest adsorption of CO2 is associated with the modified 2% concentration CNFs.

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Main Subjects


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