The effect of crosslinking temperature on the permeability of PDMS membranes: Evidence of extraordinary CO2 and CH4 gas permeation

Berean, Kyle J.; Ou, Jian Zhen; Nour, Majid; Latham, Kay; McSweeney, Christopher S.; Paull, D. R.; Halim, Andri; Kentish, Sandra E.; Doherty, Cara M.; Hill, Anita J.; Kalantar‐zadeh, Kourosh

doi:10.1016/j.seppur.2013.11.006

Cited by 139 publications

(107 citation statements)

References 61 publications

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“…For an intra-ruminal device to be able to dynamically measure the concentrations of gases in the rumen, the gases must be able to quickly permeate through the membrane. Recently, Nour et al (2013) and Berean et al (2014) reported that membrane permeability of methane, hydrogen and carbon dioxide could be substantially altered by the use of composite membranes and by optimising the temperature at which the membranes were made. This fundamental research will be crucial for the further development of robust intra-ruminal gas-sensing devices, and also for gas-sensing devices that could be attached to in-vitro fermentation apparatus to enable real time measurements of the composition of fermentation gases.…”

Section: Intra-ruminal Gas Sensormentioning

confidence: 99%

Reducing the carbon footprint of Australian milk production by mitigation of enteric methane emissions

Moate¹,

Deighton²,

Williams³

et al. 2016

Anim. Prod. Sci.

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Abstract. This review examines research aimed at reducing enteric methane emissions from the Australian dairy industry. Calorimeter measurements of 220 forage-fed cows indicate an average methane yield of 21.1 g methane (CH 4 )/kg dry matter intake. Adoption of this empirical methane yield, rather than the equation currently used in the Australian greenhouse gas inventory, would reduce the methane emissions attributed to the Australian dairy industry by~10%. Research also indicates that dietary lipid supplements and feeding high amounts of wheat substantially reduce methane emissions. It is estimated that, in 1980, the Australian dairy industry produced~185 000 t of enteric methane and total enteric methane intensity was 33.6 g CH 4 /kg milk. In 2010, the estimated production of enteric methane was 182 000 t, but total enteric methane intensity had declined~40% to 19.9 g CH 4 /kg milk. This remarkable decline in methane intensity and the resultant improvement in the carbon footprint of Australian milk production was mainly achieved by increased per-cow milk yield, brought about by the on-farm adoption of research findings related to the feeding and breeding of dairy cows. Options currently available to further reduce the carbon footprint of Australian milk production include the feeding of lipid-rich supplements such as cottonseed, brewers grains, cold-pressed canola, hominy meal and grape marc, as well as feeding of higher rates of wheat. Future technologies for further reducing methane emissions include genetic selection of cows for improved feed conversion to milk or low methane intensity, vaccines to reduce ruminal methanogens and chemical inhibitors of methanogenesis.

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Section: Intra-ruminal Gas Sensormentioning

confidence: 99%

Reducing the carbon footprint of Australian milk production by mitigation of enteric methane emissions

Moate¹,

Deighton²,

Williams³

et al. 2016

Anim. Prod. Sci.

View full text Add to dashboard Cite

show abstract

“…Perkin Elmer Spectrum two spectrophotometer was used for spectral analysis in the membrane. Each membrane sample was scanned between the wavenumber of 400 to 5000 cm 21 to determine the functional groups present in the membrane.…”

Section: Characterization Of Membranesmentioning

confidence: 99%

“…Figure 3 shows the FTIR spectra for developed membranes. Based on Figure 3, in the case of pure PSF membrane, the peak at 3066.78 cm 21 attributes the stretching vibration of CAH bond present in PSF and peak at 1587 cm 21 represents the stretching vibration of aromatic benzenes. The peak at 1405.82 cm 21 also attributes to the stretching vibration of aromatics in PSF while the peak at 1151.13 cm 21 is assigned to the symmetrical vibrations of sulfone group.…”

Section: Atr-ftir Spectroscopymentioning

confidence: 99%

“…16 The stretching vibration of aromatic benzenes indicates the presence of sulfone group, thus confirming that membrane is PSF based. 33 The aromatic CAH bending is attributed by a peak at 837.84 cm 21 .…”

Section: Atr-ftir Spectroscopymentioning

confidence: 99%

“…11,20 PDMS was selected as selective layer coating material due to its higher thermal and chemical stability. 21 PDMS is a rubbery polymer with good gas/hydrocarbon separation performance due to its elastomeric nature. PDMS is also a highly permeable polymer used in gas separation applications.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced gas separation performance of PSF membrane after modification to PSF/PDMS composite membrane in CO₂/CH₄ separation

Suleman

Lau

Yeong

2017

J of Applied Polymer Sci

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Asymmetric polysulfone (PSF) membrane was developed and modified to PSF/polydimethylsiloxane (PSF/PDMS) composite membrane by dip coating technique. Effect of PDMS coating time on membrane properties was examined by scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry, attenuated total reflectance-Fourier transform infrared, and water contact angle. The increase in PDMS coating time resulted in a decrement in the thermal strength of PSF membrane. Surface contact angle values revealed that increase in PDMS coating time had increased the surface hydrophobicity in membranes. CO 2 /CH 4 separation performance of membranes was evaluated, and an increase in CO 2 /CH 4 ideal selectivity was observed with the increase of PDMS coating time. At feed pressure of 10 bar, the selectivity of PSF has increased up to 65% after dip coating with PDMS for 30 min. Modification of polymeric membrane into composite membrane provided a way forward towards the enhancement of gas separation performance in polymeric membranes.

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Electronic Skin with Multifunction Sensors Based on Thermosensation

2017

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A multifunctional electronic skin (e-skin) with multimodal sensing capabilities of perceiving mechanical and thermal stimuli, discriminating matter type, and sensing wind is developed using the thermosensation of a platinum ribbon array, whose temperature varies with conductive or convective heat transfer toward the surroundings. Pressure is perceived by a porous elastomer covering on the heated platinum ribbon, which bears mechanical-thermal conversion to allow high integration with other sensors.

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The effect of crosslinking temperature on the permeability of PDMS membranes: Evidence of extraordinary CO2 and CH4 gas permeation

Cited by 139 publications

References 61 publications

Reducing the carbon footprint of Australian milk production by mitigation of enteric methane emissions

Reducing the carbon footprint of Australian milk production by mitigation of enteric methane emissions

Enhanced gas separation performance of PSF membrane after modification to PSF/PDMS composite membrane in CO₂/CH₄ separation

Electronic Skin with Multifunction Sensors Based on Thermosensation

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The effect of crosslinking temperature on the permeability of PDMS membranes: Evidence of extraordinary CO2 and CH4 gas permeation

Cited by 139 publications

References 61 publications

Reducing the carbon footprint of Australian milk production by mitigation of enteric methane emissions

Reducing the carbon footprint of Australian milk production by mitigation of enteric methane emissions

Enhanced gas separation performance of PSF membrane after modification to PSF/PDMS composite membrane in CO2/CH4 separation

Electronic Skin with Multifunction Sensors Based on Thermosensation

Contact Info

Product

Resources

About

Enhanced gas separation performance of PSF membrane after modification to PSF/PDMS composite membrane in CO₂/CH₄ separation