Integration of CO2 capture unit with membrane distillation technology: CO2 mitigation and freshwater production

Ullah, Asad; Soomro, Mujeeb Iqbal; Kim, Woo Seung; Khan, Bilal; Memon, Salman; Soomro, Sadam Hussain

doi:10.1016/j.cep.2020.108185

Cited by 5 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A study by Asad et al. showed a freshwater production mechanism adopting a mathematical model to monitor the membrane distillation process 120 . The research presented that the membrane distillation process is a non‐isothermal separation method.…”

Section: Reclamation Procedures Of Alkanolamines and The Removal Of Hsssmentioning

confidence: 99%

“…A study by Asad et al showed a freshwater production mechanism adopting a mathematical model to monitor the membrane distillation process. 120 The research presented that the membrane distillation process is a non-isothermal separation method. This implies that the mass transfer and heat mechanism happen concurrently within a membrane distillation setup.…”

Section: Distillationmentioning

confidence: 99%

See 1 more Smart Citation

Handling heat‐stable salts in post‐combustion CO₂ capture: A detailed survey

Emori,

Udoh,

Ekerenam

et al. 2023

Greenhouse Gases

View full text Add to dashboard Cite

The generation of heat‐stable salts (HSSs) in alkanolamine solutions for CO2 capture processes, which is adapted for power plant technologies, exists irrespective of the class of amine solution used for the capture process. Their presence do not only trigger decrements in the CO2 absorption capacities of the solvents and contribute to further alkanolamine degradation, but also result in foaming and loss of solvents, which impacts system economics and threatens the environment. HSSs also promote the corrosiveness of the metallic structures of capture systems by lowering the pH and increasing the conductivity of the absorbent solutions. Overall, these effects substantially subvert the reliability and integrity of CO2 capture units. This survey affords sufficient background on the existence of HSSs by unraveling the flow process in a typical alkanolamine‐based CO2 capture unit with respect to their formation points and potential threats. Furthermore, the major HSSs removal and alkanolamine reclamation methodologies (electrodialysis, distillation, ion exchange, electromagnetic separation, and solvent extraction) were comprehensively explored. We believe that this review paper will benefit researchers across disciplines as we continue to explore new and complex solvent formulations to minimize the cost of CO2 capture while maximizing efficiency. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

Section: Reclamation Procedures Of Alkanolamines and The Removal Of Hsssmentioning

confidence: 99%

Section: Distillationmentioning

confidence: 99%

Handling heat‐stable salts in post‐combustion CO₂ capture: A detailed survey

Emori,

Udoh,

Ekerenam

et al. 2023

Greenhouse Gases

View full text Add to dashboard Cite

show abstract

“…Dow et al, 23 presented the water treatment potential of a pilot MD unit using waste heat (<40°C) for a natural gas-fired power plant having a rated capacity of 500 MW e . In our previous works, [24][25][26] the thermal heat contained in the lean solution and purged gas has been utilized in the DCMD unit to produce freshwater.…”

mentioning

confidence: 99%

An investigation on simultaneous freshwater production and CO₂ capture using flue gas of a power plant

Soomro

Ullah

Khan³

2022

Greenhouse Gases

Self Cite

View full text Add to dashboard Cite

This paper presents an investigation on simultaneous freshwater production and CO2 capture using the flue gases of a 500 MWe coal‐fired power plant. Generally, a fan/cooler is used to reduce the temperature of flue gas before flowing into the absorber column of a CO2 capture unit. It has been replaced with a heat exchanger in this study. Seawater and flue gas were passed through the heat exchanger to raise the temperature of seawater and reduce the temperature of flue gas. The high‐temperature seawater was subsequently fed into a membrane distillation (MD) unit for freshwater production. The cold flue gas was directed to the CO2 capture unit. The heat exchanger and CO2 capture unit were modeled with Aspen Plus software. Whereas MATLAB software was used to develop and solve the MD mathematical model software for freshwater production. The seawater flow rate was varied from 4000 L/min to 7000 L/min in the heat exchanger. As a result, the flue gas (flow rate 781.6 t/h) and the outlet seawater temperatures were reduced from 27.498 to 22.360°C and 73.384 to 52.670°C, respectively. However, higher inlet seawater temperature in the MD unit produced more freshwater. An increase in inlet seawater feed temperature in the MD unit from 52.670 to 73.384°C increased the freshwater production from 211,956.5 to 299,244 L/day. Furthermore, the CO2 capture process has been analyzed by varying the methyldiethanolamine (MDEA) and piperazine (PZ) concentrations in weight% (45 and 5, 40 and 10, 35 and 15, and 30 and 20, respectively). It was observed that the energy requirement reduced from 3.55 to 3.26 MJ/kg CO2 by increasing the PZ content from 5 to 20 wt.%. At 15 and 20 wt.% of PZ content in the blended solution of MDEA/PZ, the energy required to regenerate the solvent was 3.31 and 3.26 MJ/kg CO2, respectively. PZ emissions from the absorber were also increased with the raising of PZ content in the blended solution. The energy requirement was not much higher at 15 wt.% than 20 wt.%. Therefore, MDEA/PZ solution (15/35 wt.%) was considered an optimal concentration. The reboiler duty was reduced up to 3.25 MJ/kg CO2 at 15/35 wt.% concentration with stripper pressure of 2.3 bar. © 2022 Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

Emerging application of forward osmosis and membrane distillation for post-combustion CO2 capture

Wu,

Feron,

et al. 2024

Chemical Engineering Journal

View full text Add to dashboard Cite

Integration of CO2 capture unit with membrane distillation technology: CO2 mitigation and freshwater production

Cited by 5 publications

References 28 publications

Handling heat‐stable salts in post‐combustion CO₂ capture: A detailed survey

Handling heat‐stable salts in post‐combustion CO₂ capture: A detailed survey

An investigation on simultaneous freshwater production and CO₂ capture using flue gas of a power plant

Emerging application of forward osmosis and membrane distillation for post-combustion CO2 capture

Contact Info

Product

Resources

About

Integration of CO2 capture unit with membrane distillation technology: CO2 mitigation and freshwater production

Cited by 5 publications

References 28 publications

Handling heat‐stable salts in post‐combustion CO2 capture: A detailed survey

Handling heat‐stable salts in post‐combustion CO2 capture: A detailed survey

An investigation on simultaneous freshwater production and CO2 capture using flue gas of a power plant

Emerging application of forward osmosis and membrane distillation for post-combustion CO2 capture

Contact Info

Product

Resources

About

Handling heat‐stable salts in post‐combustion CO₂ capture: A detailed survey

Handling heat‐stable salts in post‐combustion CO₂ capture: A detailed survey

An investigation on simultaneous freshwater production and CO₂ capture using flue gas of a power plant