Graphene-based membranes for CO2 separation

Ali, Akbar; Pothu, Ramyakrishna; Siyal, Sajid Hussain; Phulpoto, Shahnawaz; Sajjad, Muhammad; Thebo, Khalid Hussain

doi:10.1016/j.mset.2018.11.002

Cited by 76 publications

(60 citation statements)

References 45 publications

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“…The difference in the rate of permeation of gas and molecular solvent extraction properties are indicators of changes in structure of porous membrane resulting from the use of various inert environments during pyrolysis [19]. The production of gaseous products formed during the phases of decomposition is caused due to the pores.…”

Section: Resultsmentioning

confidence: 99%

Polyimide Based-Carbon Membrane: Effect of Pyrolysis Environment

Sazali¹,

Ramli²,

Siregar³

2020

ARMS

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Tubular carbon membrane was prepared from BTDA-TDI/MDI (P-84) polyimide as a main precursor that blends with nanocrystalline cellulose (NCC) through controlled pyrolysis condition. The effects of the final pyrolysis environment on 2 and 2 permeation levels were studied. By manipulating pyrolysis conditions during the process of pyrolysis with rate of heating at 3°C/min, a final temperature of 800°C and a stabilization temperature of 300°C, the performance of the carbon tubular membrane can be regulated based on a review of previous studies. The control of pyrolysis environment (helium, argon, and nitrogen gases) through the quality of carbon membranes influenced the permeation of gas properties themselves. By applying Ar gasses as a pyrolysis environment throughout the process of heat treatment, a better performance in gas separation was found. Single gas permeation tests of 2 and 2 were performed to examine the transport mechanism in the process of carbon membrane separation. The PI/NCC carbon membrane that undergoes Ar environment showed the most impressive finding with the highest selectivity of 8.23±3.27 for 2 / 2 213.56±2.17 GPU permeance of 2 .

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Section: Resultsmentioning

confidence: 99%

Polyimide Based-Carbon Membrane: Effect of Pyrolysis Environment

Sazali¹,

Ramli²,

Siregar³

2020

ARMS

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“…In this work, for the first time, the recent progress on graphene-based membranes for H 2 separation was comprehensively reviewed, in contrast to previous reviews that broadly cover general gas separations using graphene membranes [ 48 , 49 , 50 ]. First, this review begins with the introduction of three commonly adopted membrane designs, namely single-layer graphene, multi-layer graphene laminates and graphene-based composite membranes or MMMs.…”

Section: Introductionmentioning

confidence: 99%

Graphene-based Membranes for H2 Separation: Recent Progress and Future Perspective

2020

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Hydrogen (H2) is an industrial gas that has showcased its importance in several well-known processes such as ammonia, methanol and steel productions, as well as in petrochemical industries. Besides, there is a growing interest in H2 production and purification owing to the global efforts to minimize the emission of greenhouse gases. Nevertheless, H2 which is produced synthetically is expected to contain other impurities and unreacted substituents (e.g., carbon dioxide, CO2; nitrogen, N2 and methane, CH4), such that subsequent purification steps are typically required for practical applications. In this context, membrane-based separation has attracted a vast amount of interest due to its desirable advantages over conventional separation processes, such as the ease of operation, low energy consumption and small plant footprint. Efforts have also been made for the development of high-performance membranes that can overcome the limitations of conventional polymer membranes. In particular, the studies on graphene-based membranes have been actively conducted most recently, showcasing outstanding H2-separation performances. This review focuses on the recent progress and potential challenges in graphene-based membranes for H2 purification.

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“…were employed to generate biogas from different types of waste in order to compensate the shortage in production of natural gas, and to dispose such waste simultaneously [3][4][5]. Usually, biogas obtained using such technologies contains many components, particularly 60-70 wt.% of Methane (CH 4 ) as a main component, [30][31][32][33][34][35][36][37][38][39][40] wt.% of Carbon dioxide (CO 2 ) as a significant impurity in natural gas paths, and some trace elements (e.g., Nitrogen, ammonia, hydrogen sulphide, water vapor, etc.) [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…[32][33][34]. Although polymer nanocomposite membranes have been widely studied on the lab scale, however, they have not been commercialized yet due to their poor dispersion and because these types of membranes are mostly challenged by nanofiller distribution and production of defect-free membranes with a very thin selective film [35,36]. Therefore, our research group used twin screw extruder as an industrial technique to mix graphene with PEBA and to produce graphene/PEBA filaments, then we spun into fibrous membranes using melt electrospinning for cleanup of oil spills [37].…”

Section: Introductionmentioning

confidence: 99%

A New Industrial Technology for Mass Production of Graphene/PEBA Membranes for CO2/CH4 Selectivity with High Dispersion, Thermal and Mechanical Performance

et al. 2020

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Polyether block amide (PEBA) nanocomposite membranes, including Graphene (GA)/PEBA membranes are considered to be a promising emerging technology for removing CO2 from natural gas and biogas. However, poor dispersion of GA in the produced membranes at industrial scale still forms the main barrier to commercialize. Within this frame, this research aims to develop a new industrial approach to produce GA/PEBA granules that could be used as a feedstock material for mass production of GA/PEBA membranes. The developed approach consists of three sequential phases. The first stage was concentrated on production of GA/PEBA granules using extrusion process (at 170–210 °C, depending on GA concentration) in the presence of Paraffin Liquid (PL) as an adhesive layer (between GA and PEBA) and assisted melting of PEBA. The second phase was devoted to production of GA/PEBA membranes using a solution casting method. The last phase was focused on evaluation of CO2/CH4 selectivity of the fabricated membranes at low and high temperatures (25 and 55 °C) at a constant feeding pressure (2 bar) using a test rig built especially for that purpose. The granules and membranes were prepared with different concentrations of GA in the range 0.05 to 0.5 wt.% and constant amount of PL (2 wt.%). Also, the morphology, physical, chemical, thermal, and mechanical behaviors of the synthesized membranes were analyzed with the help of SEM, TEM, XRD, FTIR, TGA-DTG, and universal testing machine. The results showed that incorporation of GA with PEBA using the developed approach resulted in significant improvements in dispersion, thermal, and mechanical properties (higher elasticity increased by ~10%). Also, ideal CO2/CH4 selectivity was improved by 29% at 25 °C and 32% at 55 °C.

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Graphene-based membranes for CO2 separation

Cited by 76 publications

References 45 publications

Polyimide Based-Carbon Membrane: Effect of Pyrolysis Environment

Polyimide Based-Carbon Membrane: Effect of Pyrolysis Environment

Graphene-based Membranes for H2 Separation: Recent Progress and Future Perspective

A New Industrial Technology for Mass Production of Graphene/PEBA Membranes for CO2/CH4 Selectivity with High Dispersion, Thermal and Mechanical Performance

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