2 research outputs found
Development of Membrane Contactors Using Phase Change Solvents for CO<sub>2</sub> Capture: Material Compatibility Study
Phase change solvents represent a
new class of CO<sub>2</sub> absorbents
with a promising potential to reduce the energy penalty associated
with CO<sub>2</sub> capture. However, their high volatility is a major
concern for their use at the industrial scale. It is believed that
membrane absorption offers a solution to overcome this issue, particularly
if the membrane can prevent amine evaporation. In the present work
a compatibility study is carried out in order to identify suitable
membranes in a membrane contactor using phase change solvents as liquid
absorbent. Several porous and dense polymeric samples have been studied,
and their chemical stability and ability to prevent amine evaporation
have been investigated through immersion tests and amine permeation
experiments. The experimental results indicate that to use the blend
solvents based on DEEA/MAPA (diethyl-ethanolamine/3-methylamino-propylamine)
in a membrane contactor requires a membrane with excellent stability.
Porous membranes typically used for membrane contactors with MEA aqueous
solution, such as polytetrafluoroethylene (PTFE) and polypropylene
(PP) membranes, are not suitable to be used as a membrane interface
with this new class of absorbents. A selection of membrane materials
for the fabrication of thin composite membranes suitable for this
application has been identified and their CO<sub>2</sub> and amine
transport properties have been determined. Finally, the wettability
of the most suitable polymer for the dense layer has been measured
for different absorbent concentrations in order to ensure a good interfacial
contact in the membrane contactor
Metadata record for: HIT-COVID, a global database tracking public health interventions to COVID-19
This dataset contains key characteristics about the data described in the Data Descriptor HIT-COVID, a global database tracking public health interventions to COVID-19. Contents: 1. human readable metadata summary table in CSV format 2. machine readable metadata file in JSON forma