Search Results - "Stevens, Geoff W"

Membrane gas separation applications in natural gas processing by Scholes, Colin A., Stevens, Geoff W., Kentish, Sandra E.

“…Gas separation membranes can be applied to a range of processing steps during natural gas treatment. This paper considers the current and future potential of…”
Get full text

Recent advances refining galactooligosaccharide production from lactose by Gosling, Aaron, Stevens, Geoff W., Barber, Andrew R., Kentish, Sandra E., Gras, Sally L.

“…The production of prebiotic galactooligosaccharides (GOS) by the β-galactosidase catalysed conversion of lactose has become commercially important. Yet it…”
Get full text

Solvent extraction of rare earth elements using phosphonic/phosphinic acid mixtures by Quinn, James E., Soldenhoff, Karin H., Stevens, Geoff W., Lengkeek, Nigel A.

“…This work examines the extraction of rare earths (Ce, Pr, Nd, Sm, Tb, Dy, Ho, Er, Yb, Lu and Y) by 2-ethylhexyl phosphonic acid 2-ethylhexyl mono-ester…”
Get full text

Ultrathin chitosan–poly(ethylene glycol) hydrogel films for corneal tissue engineering by Ozcelik, Berkay, Brown, Karl D., Blencowe, Anton, Daniell, Mark, Stevens, Geoff W., Qiao, Greg G.

“…Due to the high demand for donor corneas and their low supply, autologous corneal endothelial cell (CEC) culture and transplantation for treatment of corneal…”
Get full text

The use of carbonic anhydrase to accelerate carbon dioxide capture processes by Yong, Joel K. J., Stevens, Geoff W., Caruso, Frank, Kentish, Sandra E.

“…The chemical absorption of CO2 into a monoethanolamine solvent is currently the most widely accepted commercial approach to carbon dioxide capture. However,…”
Get full text

Water permeation and sorption properties of Nafion 115 at elevated temperatures by Azher, Hirra, Scholes, Colin A., Stevens, Geoff W., Kentish, Sandra E.

“…There is the potential to use membrane technology to recover high purity water from power station flue gas streams. In this work, the permeation of water, CO2…”
Get full text

Plasticization of ultra-thin polysulfone membranes by carbon dioxide by Scholes, Colin A., Chen, George Q., Stevens, Geoff W., Kentish, Sandra E.

“…Plasticization of gas separation membranes by carbon dioxide permanently alters their performance and increases the possibility of membrane failure. This is…”
Get full text

A comparison of the use of commercial and diluent free LIX84I in poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-based polymer inclusion membranes for the extraction and transport of Cu(II) by Wang, Duo, Cattrall, Robert W., Li, Jie, Almeida, M. Inês G.S., Stevens, Geoff W., Kolev, Spas D.

“…•PIMs incorporating 30% commercial or diluent free LIX84I were prepared.•They also contained 45% of the polymer PVDF-HFP and 25% 2-nitrophenyloctyl ether.•The…”
Get full text

Sorption of methane, nitrogen, carbon dioxide, and water in Matrimid 5218 by Scholes, Colin A., Tao, Wen Xian, Stevens, Geoff W., Kentish, Sandra E.

“…The sorption of the light gases CH4, N2, CO2 as well as water into polymer films prepared from a commercial sample of 3,3′‐4, 4′‐benzophenone…”
Get full text

Effects of Minor Components in Carbon Dioxide Capture Using Polymeric Gas Separation Membranes by Scholes, Colin A., Kentish, Sandra E., Stevens, Geoff W.

“…The capture of carbon dioxide by membrane gas separation has been identified as one potential solution to reduce greenhouse gas emissions. In particular, the…”
Get full text

Effect of pyrolysis temperature and operating temperature on the performance of nanoporous carbon membranes by Anderson, Clare J., Pas, Steven J., Arora, Gaurav, Kentish, Sandra E., Hill, Anita J., Sandler, Stanley I., Stevens, Geoff W.

“…Technology designed to capture and store carbon dioxide (CO 2) will play a significant role in the near-term reduction of CO 2 emissions and is considered…”
Get full text

The performance of carbon membranes in the presence of condensable and non-condensable impurities by Anderson, Clare J., Tao, Wendy, Scholes, Colin A., Stevens, Geoff W., Kentish, Sandra E.

“…► Nanoporous carbon membranes were exposed to water, hexane, toluene, CO and H 2S. ► Laboratory tests showed a reduction in permeance of <30% and a minimal…”
Get full text

The use of streaming potential measurements to study the fouling and cleaning of ultrafiltration membranes by Lawrence, Nicole D., Perera, Jilska M., Iyer, Mani, Hickey, Malcolm W., Stevens, Geoff W.

“…Streaming potential measurements have been used to investigate the surface characteristics of ultrafiltration membranes and to determine the interactions…”
Get full text

CO2 capture from pre-combustion processes—Strategies for membrane gas separation by Scholes, Colin A., Smith, Kathryn H., Kentish, Sandra E., Stevens, Geoff W.

Get full text

Membrane stripping: Desorption of carbon dioxide from alkali solvents by Simioni, Michael, Kentish, Sandra E., Stevens, Geoff W.

“…► Stripping of carbon dioxide from a solvent in a membrane contactor is achievable. ► Performance relates to the extent of solvent intrusion and capillary…”
Get full text

A poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-based polymer inclusion membrane (PIM) containing LIX84I for the extraction and transport of Cu(II) from its ammonium sulfate/ammonia solutions by Wang, Duo, Cattrall, Robert W., Li, Jie, Almeida, M. Inês G.S., Stevens, Geoff W., Kolev, Spas D.

Get full text

Water permeability and competitive permeation with CO2 and CH4 in perfluorinated polymeric membranes by Scholes, Colin A., Kanehashi, Shinji, Stevens, Geoff W., Kentish, Sandra E.

“…•Water permeability through Teflon AF1600 and Hyflon AD60 comparable to carbon dioxide.•Water permeability through Hyflon AD60 passes through a minimum at…”
Get full text

Competitive permeation of gas and water vapour in high free volume polymeric membranes by Scholes, Colin A., Jin, Jianyong, Stevens, Geoff W., Kentish, Sandra E.

“…ABSTRACT Highly permeable glassy polymeric membranes based on poly (1‐trimethylsilyl‐1‐propyne) (PTMSP) and a polymer of intrinsic porosity (PIM‐1) were…”
Get full text

A comparison of commercial reverse osmosis membrane characteristics and performance under alginate fouling conditions by Widjaya, Adrian, Hoang, Tung, Stevens, Geoff W., Kentish, Sandra E.

“…► A range of commercial RO membranes are compared. ► Differences in membrane chemistry did not translate to changes in surface properties. ► Fouling rate…”
Get full text

The effect of hydrogen sulfide, carbon monoxide and water on the performance of a PDMS membrane in carbon dioxide/nitrogen separation by Scholes, Colin A., Stevens, Geoff W., Kentish, Sandra E.

Get full text