1. Separation and Capture of CO2 using membrane technology
University of Zaragoza
Background
Atmospheric CO2 concentration has increased from 280 to 370 ppm over the last 200 years, this is due to use of fossil fuels (petrol, coal, natural gas).
By 2100 carbon cycle models predict concentration of 540 to 970 ppm.
Problem
This increase of atmospheric CO2 concentrations is the main cause of greenhouse effect.
CO2 reduction would be necessary
CO2 capture technologies must be developed
Kyoto Protocol
OLD WAY
NEW WAY WITH MEMBRANES
Post-combustion separation
absorb & re-radiate heat
CO2
The Greenhouse Effect
N2+CO2
Increasing greenhouse gases
Combustion
CO2
H2 flux enrichment
Synthesis Gas
H2+CO2 H2
Pre-separation
H2 Membrane Reforming
CH4
+ CO2
CH4+H2O H2+CO2
CO2 H2
H2O N2
CO2
H2O N2
CO2 geologic storage
Coal
CO2 geologic storage
Natural Gas CH4 + CO2
Green Power
Petrol + Coal H2
Petrol
Natural Gas
Power
NO CO2 EMISSIONS
Geologic Storage
Facts
Satisfactory test with different types of zeolitic membranes
Membrane reactors tested in fuel reforming
Need to improve membranes (further research) in order to future industrial introduction
Membrane separation and geologic storage  reduction emissions of greenhouse gases
By I. Pellejero; M. Menendez