Comparison of biogas upgrading performances of different mixed matrix membranes

Öztürk, Bahtiyar; Demirciyeva, Firuze

doi:10.1016/j.cej.2013.02.062

Cited by 60 publications

(35 citation statements)

References 42 publications

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“…Nowadays, there are many technologies applied to remove CO 2 from raw biogas, such as pressure swing adsorption, chemical absorption, water scrubbing and membrane separation. Among these technologies, membrane separation is considered one of the most environmental friendly and the least energy‐intensive systems . However, the separation performance of the membrane separation is highly dependent on the membrane materials used.…”

Section: Introductionmentioning

confidence: 99%

Composite membranes of graphene oxide for CO₂/CH₄ separation

Norahim

Faungnawakij

Quitain

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Biogas is an alternative renewable energy produced by anaerobic digestion of various organic wastes mainly from agriculture, households and biomass and food industries. Typically, raw biogas consists of 50–70% methane (CH4), 30–50% carbon dioxide (CO2), and small amounts of hydrogen sulfide (H2S) and water vapour. Purifying biogas by removing CO2 and other trace impurities is required in order to achieve higher calorific value, safe operation and to meet fuel standards. As CO2 is the second largest component of biogas, this study focused on its removal from CH4. RESULTS Composite membranes of blended PEG 400/Pebax 1657 polymer and graphene oxide (GO) were developed for CO2/CH4 gas separation. The effects of GO loading and PEG 400 addition on CO2/CH4 separation performance were investigated. Optimal loadings of 0.25 wt% GO and 50 wt% PEG 400 obtained the best membrane performance with 12.4 GPU of CO2 permeance and 14 of CO2/CH4 separation factor. CONCLUSION Incorporating GO to the polymer membrane enhanced CO2/CH4 separation, whereas PEG 400 addition increased CO2 permeance. The advantages from each component led to an enhancement of CO2 permeance and CO2/CH4 separation. © 2019 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Composite membranes of graphene oxide for CO₂/CH₄ separation

Norahim

Faungnawakij

Quitain

et al. 2019

J of Chemical Tech & Biotech

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“…According to the obtained results, the addition of a molecular sieve shifted the transport properties of the membrane close to the Robeson upper bound limit. Mixed matrix membranes were applied for biogas upgrading by Ozturk and Demirciyeva (2013), who used PI and polyether imide (PEI) polymers combined with an 3Å, 4Å, and 5Å zeolite. The prepared membranes were tested with a binary mixture first.…”

Section: Separation Of Comentioning

confidence: 99%

Gas permeation processes in biogas upgrading: A short review

2015

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Biogas upgrading is a widely studied and discussed topic. Many different technologies have been employed to obtain biomethane from biogas. Methods like water scrubbing or pressure swing adsorption are commonly used and can be declared as well established. Membrane gas permeation found its place among the biogas upgrading methods some years ago. Here, we try to summarize the progress in the implementation of gas permeation in biogas upgrading. Gas permeation has been already accepted as a commercially feasible method for CO

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“…Therefore, a broad range of porous fillers with good size sieving ability (e.g. metal organic frameworks (MOFs) [12][13][14], zeolites [15], carbon molecular sieves [16]) have been attempted to endow the membranes with enhanced diffusivity and diffusivity selectivity. Meanwhile, incorporating fillers with polar groups that favorably interacted with CO 2 may confer the membrane with enhanced CO 2 solubility and thus permeability [5,17,18].…”

Section: Introductionmentioning

confidence: 99%