A Brief Note On Gas Separation And Sequestration

2801 Words Jul 26th, 2015 12 Pages
Dangling PEG Containing Thiol-ene Polymer Membranes
Effect of Dangling PEG Moieties on CO2 Gas Selectivity, Gas Transport, and Free Volume Properties

Tyler Haddock

Graduate Student: Ramesh Ramakrishnan

Advisor: Dr. Sergei Nazarenko

Introduction Gas separation and sequestration is used in many of industrial processes. An emerging utilization is in fossil fuel plants, where fuel combustion waste is released.1 Among these products is CO2, which is why fuel plants and most notably coal plants—the number one producer of electricity in the United States—account for around 40% of all CO2 emissions.1-2 Carbon capture and sequestration (CCS) at fuel plants has duel benefits: an increase in the performance of fuels, such as natural gas from reduced CO2 concentration, and a lowering of the emission of a greenhouse gas into the atmosphere.1 Methods to separate and remove CO2 before being released as flue gas have already been implemented to a limited extent.1, 3 Separation of CO2 can occur before or after energy conversion, but pre-combustion treatments—such as gasification and oxy-combustion—also require the separation of H2 and O2¬ gases, respectively.1 Regardless of when the CCS stage occurs, CO2 capture is the most costly step with common approaches including chemical absorption, surface adsorption, and membrane technology. The most developed and commonly used technique is absorption, often using amines such as monoethanolamine (MEA).1 MEA is effective due to…
Open Document