A modeling study of module arrangement and experimental investigation of single stage module for physical absorption of biogas using hollow fiber membrane contactors

Tantikhajorngosol, Puttipong; Laosiripojana, Navadol; Jiraratananon, Ratana; Assabumrungrat, Suttichai

doi:10.1016/j.memsci.2017.12.014

Cited by 13 publications

(3 citation statements)

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“…After CO 2 enters the membrane pores by diffusion, it chemically reacts with the amine solution at the membrane‐liquid boundary. At this time, the mass transfer equilibrium equation is 20 :

\nabla ∙ (- D_{g, t} \nabla C_{{CO}_{2}} + C_{{CO}_{2}} \overset{true\to}{v_{g}}) = R_{{CO}_{2}} .

…”

Section: Model Developmentmentioning

confidence: 99%

3D models guide the design of hollow fiber membrane contactors with complex internal structures for CO₂ capture

Yin,

Liu,

Gao

et al. 2023

AIChE Journal

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Membrane contactors have good prospects in the field of CO2 capture. In this study, the effects of operation conditions (gas velocity, liquid flow, CO2 pressure, amine concentration, and CO2 loading) on CO2 absorption flux (JCO2) for CO2 absorption into N‐methyl‐4‐piperidinol (MPDL) solution in membrane contactors were investigated through experiments and simulations. A three‐dimensional (3D) model was developed using COMSOL Multiphysics software to study the comprehensive CO2 mass transfer process in the multifiber membrane contactor and the effect of the number of fibers on the flow and CO2 concentration distribution without simplifying the geometry compared with those of traditional one‐dimensional (1D) and two‐dimensional (2D) models. Non‐ideal effects occurring in hollow fiber membrane contactors can be explained using a 3D modeling. By comparing the simulated with the experimental , the effectiveness of the model was determined. The simulation results emphasize that the spatial concentration distribution has a great correlation with the corresponding velocity distribution. Additionally, reducing the uneven velocity distribution of gas and liquid is a very important factor to improve the mass transfer performance of CO2. Increasing the number of fibers with a constant total volumetric flux can reduce the thickness of the boundary layer and promote the mass transfer.

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“…After CO 2 enters the membrane pores by diffusion, it chemically reacts with the amine solution at the membrane‐liquid boundary. At this time, the mass transfer equilibrium equation is 20 :

\nabla ∙ (- D_{g, t} \nabla C_{{CO}_{2}} + C_{{CO}_{2}} \overset{true\to}{v_{g}}) = R_{{CO}_{2}} .

…”

Section: Model Developmentmentioning

confidence: 99%

3D models guide the design of hollow fiber membrane contactors with complex internal structures for CO₂ capture

Yin,

Liu,

Gao

et al. 2023

AIChE Journal

View full text Add to dashboard Cite

show abstract

“…For the second module, fresh absorbent will be used to completely remove the acid gas. As Tantikhajorngosol et al 211 suggested, the multistage module is beneficial to improve the H2S removal rate. In addition, for economic reasons, Esquiroz-Molina 208 recommends an optimal pH of about 11 when using NaOH as the absorbent to remove H2S and CO2 from NG.…”

Section: Membrane Contactorsmentioning

confidence: 99%

Hydrogen sulfide removal from natural gas using membrane technology: a review

Guo

Selyanchyn

et al. 2021

J. Mater. Chem. A

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“…Adding a dense layer to the porous membrane or using a selective dense membrane may provide intensive solutions, although increasing overall mass transfer resistance [ 18 ]. The literature also widely reports the use of hydrophobic polymeric porous membranes [ 19 , 20 , 21 , 22 , 23 ]. Fougerit et al [ 24 ] designed a lab-scale pilot with a porous polypropylene membrane contactor to purify biogas.…”

Section: Introductionmentioning

confidence: 99%

CO2 Absorption Using Hollow Fiber Membrane Contactors: Introducing pH Swing Absorption (pHSA) to Overcome Purity Limitation

et al. 2021

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Recently, membrane contactors have gained more popularity in the field of CO2 removal; however, achieving high purity and competitive recovery for poor soluble gas (H2, N2, or CH4) remains elusive. Hence, a novel process for CO2 removal from a mixture of gases using hollow fiber membrane contactors is investigated theoretically and experimentally. A theoretical model is constructed to show that the dissolved residual CO2 hinders the capacity of the absorbent when it is regenerated. This model, backed up by experimental investigation, proves that achieving a purity > 99% without consuming excessive chemicals or energy remains challenging in a closed-loop system. As a solution, a novel strategy is proposed: the pH Swing Absorption which consists of manipulating the acido–basic equilibrium of CO2 in the absorption and desorption stages by injecting moderate acid and base amount. It aims at decreasing CO2 residual content in the regenerated absorbent, by converting CO2 into its ionic counterparts (HCO3− or CO32−) before absorption and improving CO2 degassing before desorption. Therefore, this strategy unlocks the theoretical limitation due to equilibrium with CO2 residual content in the absorbent and increases considerably the maximum achievable purity. Results also show the dependency of the performance on operating conditions such as total gas pressure and liquid flowrate. For N2/CO2 mixture, this process achieved a nitrogen purity of 99.97% with a N2 recovery rate of 94.13%. Similarly, for H2/CO2 mixture, a maximum H2 purity of 99.96% and recovery rate of 93.96% was obtained using this process. Moreover, the proposed patented process could potentially reduce energy or chemicals consumption.

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A modeling study of module arrangement and experimental investigation of single stage module for physical absorption of biogas using hollow fiber membrane contactors

Cited by 13 publications

References 50 publications

3D models guide the design of hollow fiber membrane contactors with complex internal structures for CO₂ capture

3D models guide the design of hollow fiber membrane contactors with complex internal structures for CO₂ capture

Hydrogen sulfide removal from natural gas using membrane technology: a review

CO2 Absorption Using Hollow Fiber Membrane Contactors: Introducing pH Swing Absorption (pHSA) to Overcome Purity Limitation

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A modeling study of module arrangement and experimental investigation of single stage module for physical absorption of biogas using hollow fiber membrane contactors

Cited by 13 publications

References 50 publications

3D models guide the design of hollow fiber membrane contactors with complex internal structures for CO2 capture

3D models guide the design of hollow fiber membrane contactors with complex internal structures for CO2 capture

Hydrogen sulfide removal from natural gas using membrane technology: a review

CO2 Absorption Using Hollow Fiber Membrane Contactors: Introducing pH Swing Absorption (pHSA) to Overcome Purity Limitation

Contact Info

Product

Resources

About

3D models guide the design of hollow fiber membrane contactors with complex internal structures for CO₂ capture

3D models guide the design of hollow fiber membrane contactors with complex internal structures for CO₂ capture