Siloxane removal using silicone–rubber membranes

Ajhar, Marc; Bannwarth, Sebastian; Stollenwerk, Karl-Heinz; Spalding, G.; Yüce, Süleyman; Weßling, Matthias; Melin, Thomas

doi:10.1016/j.seppur.2012.01.003

Cited by 36 publications

(21 citation statements)

References 12 publications

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“…The exploration of membrane material and the treatment condition had become two important fields of this technology. A silicone-rubber membrane was useful for siloxanes removal but methane losses of 7% was also detected, and the permeabilities of siloxanes was found to decrease with rising temperatures [13]. The membrane fouling by siloxanes should be decreased to maintain the membrane separation efficiency.…”

Section: Siloxanes Removal Technologies From Biogasmentioning

confidence: 99%

Techniques for Siloxanes Removal from Biogas Produced by Sewage Sludge Digestion

Zhang¹,

Cui²,

Zhu³

et al. 2017

dteees

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Abstract. Biogas production from sewage sludge digestion is one of the most effective methods for sewage sludge recycling. During the transformation from biogas to biomethane, the unfavorite component must be removed. As a trace amount of undesirable component, the siloxanes in biogas will damage the biogas power generation equipment, which is disadvantage to the biogas utilization. This paper stated the characteristics of siloxanes and the siloxanes removal technologies. The siloxanes removal technologies from biogas, including adsorption on solid material, gas-liquid absorption, condensation, membrane separation, biological treatment, were reviewed and compared. Otherwise, the pre-aeration on anaerobic digestion of sludge was introduced as an alternative for siloxanes removal before digestion.

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Section: Siloxanes Removal Technologies From Biogasmentioning

confidence: 99%

Techniques for Siloxanes Removal from Biogas Produced by Sewage Sludge Digestion

Zhang¹,

Cui²,

Zhu³

et al. 2017

dteees

View full text Add to dashboard Cite

show abstract

“…Further research is required for enhancing this biological technology towards siloxanes. On the other hand, the low score that membranes receive indicate not only significant operational (2.5 points) and investment costs (0 points) but also lower RE than adsorption processes (60%) at the current stage of development of this technology [47].…”

Section: Biogasapp_edss Evaluationmentioning

confidence: 99%

Environmental Decision Support System for Biogas Upgrading to Feasible Fuel

et al. 2019

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Biogas production is a growing market and the existing conversion technologies require different biogas quality and characteristics. In pursuance of assisting decision-makers in biogas upgrading an environmental decision support system (EDSS) was developed. Since the field is rapidly progressing, this tool is easily updatable with new data from technical and scientific literature through the knowledge acquisition level. By a thorough technology review, the diagnosis level evaluates a wide spectrum of technologies for eliminating siloxanes, H2S, and CO2 from biogas, which are scored in a supervision level based upon environmental, economic, social and technical criteria. The sensitivity of the user towards those criteria is regarded by the EDSS giving a response based on its preferences. The EDSS was validated with data from a case-study for removing siloxanes from biogas in a sewage plant. The tool described the flow diagram of treatment alternatives and estimated the performance and effluent quality, which matched the treatment currently given in the facility. Adsorption onto activated carbon was the best-ranked technology due to its great efficiency and maturity as a commercial technology. On the other hand, biological technologies obtained high scores when economic and environmental criteria were preferred. The sensitivity analysis proved to be effective allowing the identification of the challenges and opportunities for the technologies considered.

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“…The inner membrane area was used for these calculations, instead of the outer membrane area, because permeating flow was from the lumen side of the fibres outwards. Furthermore, permeability has been shown to be independent of the feed regime (via shell or lumen side) [41].…”

Section: Influence Of Sweep-to-feed Flow Ratio On Co2 Recoverymentioning

confidence: 99%

“…Silicone rubber membranes, like PDMS, have been used in various gas separation processes and many studies have assessed the performance of CO2 and N2 separation (e.g., [42][43][44] [41] and 2848 Barrer [45]. Most studies, however, were conducted using pure gas streams under highly controlled conditions and, thus, represent a best-case scenario.…”

Section: Influence Of Sweep-to-feed Flow Ratio On Co2 Recoverymentioning

confidence: 99%

Selective-exhaust gas recirculation for CO2 capture using membrane technology

Russo

Prpich

Anthony

et al. 2018

Journal of Membrane Science

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Membranes can potentially offer low-cost CO2 capture from post-combustion flue gas. However, the low partial\ud pressure of CO2 in flue gases can inhibit their effectiveness unless methods are employed to increase their partial\ud pressure. Selective-Exhaust Gas Recirculation (S-EGR) has recently received considerable attention. In this study,\ud the performance of a dense polydimethylsiloxane (PDMS) membrane for the separation of CO2/N2 binary model\ud mixtures for S-EGR application was investigated using a bench-scale experimental rig. Measurements at different\ud pressures, at different feeding concentrations and with nitrogen as sweep gas revealed an average carbon dioxide\ud permeability of 2943±4.1%RSD Barrer. The bench-scale membrane module showed high potential to separate\ud binary mixtures of N2 and CO2 containing 5–20% CO2. The permeability was slightly affected by feed pressures\ud ranging from 1 to 2.4 bar. Furthermore, the separation selectivity for a CO2/N2 mixture of 10%/90% (by volume)\ud reached a maximum of 10.55 at 1.8 bar. Based on the results from the bench-scale experiments, a pilotscale\ud PDMS membrane module was tested for the first time using a real flue gas mixture taken from the combustion\ud of natural gas. Results from the pilot-scale experiments confirmed the potential of the PDMS membrane\ud system to be used in an S-EGR configuration for capture of CO2

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Siloxane removal using silicone–rubber membranes

Cited by 36 publications

References 12 publications

Techniques for Siloxanes Removal from Biogas Produced by Sewage Sludge Digestion

Techniques for Siloxanes Removal from Biogas Produced by Sewage Sludge Digestion

Environmental Decision Support System for Biogas Upgrading to Feasible Fuel

Selective-exhaust gas recirculation for CO2 capture using membrane technology

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