Carbon Dioxide Adsorption on Metal Organic Framework Basolite C300

Abstract

Carbon dioxide has become a global concern in recent years because of its enormous increase in the atmosphere. Various efforts have been made to control and capture it. The main source of carbon dioxide emission is the combustion of fossil fuels i.e. coal, natural gas, oil. The burning of these fossil fuels releases large amounts of CO2 into the atmosphere. It is considered as one of the major source of global warming. Carbon capture and sequestration (CCS) is the only technology that enables the capture of CO2 from fossil fuels. One of the carbon capture technology is adsorption process. Gas separation by adsorption process is widely used, in which choice of the good adsorbent is the key for the separation. There are many adsorbent materials like activated carbons,silica gel, zeolites, activated alumina etc, which are being used to capture the carbon dioxide. Metal organic frameworks are the new class of the adsorbents, which have been investigated as the high potential adsorbents. Here, MOF used is Basolite C300 i.e. copper benzene 1,3,5-tricarboxylate (Cu-BTC MOF), it is also known as HKUST-1. In this study, carbon dioxide adsorption/desorption was investigated using temperature swing adsorption process. Breakthrough study for the adsorption of carbon dioxide on Basolite C300 was done using fixed bed reactor at different temperatures and feed concentrations. It gives the maximum adsorption at lower temperature and higher concentration. It was found that Basolite C300 has a maximum dynamic CO2 adsorption capacity 1.45 mmol/g at 303K. Kinetic data obtained was analyzed using pseudo first order and pseudo second order models. Pseudo second order kinetic model shows the better applicability. The experimental data were analyzed by the Langmuir and Freundlich isotherm