The Experts below are selected from a list of 258 Experts worldwide ranked by ideXlab platform

Heechul Choi - One of the best experts on this subject based on the ideXlab platform.

  • thin film nanocomposite membrane with cnt positioning in support layer for energy harvesting from saline water
    Chemical Engineering Journal, 2016
    Co-Authors: Moon Son, Hosik Park, Lei Liu, Hyeongyu Choi, Joon Ha Kim, Heechul Choi
    Abstract:

    Abstract The pressure retarded osmosis (PRO) process has been considered as an alternative and Renewable Technology to generate electricity from mixing two solutions of different salinities. However, improving the osmotic performance of semi-permeable membrane is still a major challenge in the PRO system. Therefore, thin-film nanocomposite (TFN) membrane was synthesized by using carbon nanotubes (CNT)-embedded-polyethersulfone (PES) supporting layer and polyamide active layer in this study. The prepared membranes were further employed in the PRO process to harvest energy from saline water. The water flux increase of the TFN membrane was promoted by CNT-induced porosity and the hydrophilicity of the support layer as well as by the chemical etching of the active layer. The water flux and maximum power density of the developed TFN membrane was found to be 87% (averaged from 2 bar to 10 bar) and 110% greater than for bare thin-film composite (TFC) membranes, respectively. Furthermore, the TFN membrane preparation could easily be scaled up using conventional fabrication methods with less than 2% additional material cost. Therefore, this finding could contribute to the commercialization of sustainable energy generation by utilizing the tremendous potential of fresh- and salt-water mixing.

  • thin film nanocomposite membrane with cnt positioning in support layer for energy harvesting from saline water
    Chemical Engineering Journal, 2016
    Co-Authors: Hosik Park, Hyeongyu Choi, Heechul Choi
    Abstract:

    Abstract The pressure retarded osmosis (PRO) process has been considered as an alternative and Renewable Technology to generate electricity from mixing two solutions of different salinities. However, improving the osmotic performance of semi-permeable membrane is still a major challenge in the PRO system. Therefore, thin-film nanocomposite (TFN) membrane was synthesized by using carbon nanotubes (CNT)-embedded-polyethersulfone (PES) supporting layer and polyamide active layer in this study. The prepared membranes were further employed in the PRO process to harvest energy from saline water. The water flux increase of the TFN membrane was promoted by CNT-induced porosity and the hydrophilicity of the support layer as well as by the chemical etching of the active layer. The water flux and maximum power density of the developed TFN membrane was found to be 87% (averaged from 2 bar to 10 bar) and 110% greater than for bare thin-film composite (TFC) membranes, respectively. Furthermore, the TFN membrane preparation could easily be scaled up using conventional fabrication methods with less than 2% additional material cost. Therefore, this finding could contribute to the commercialization of sustainable energy generation by utilizing the tremendous potential of fresh- and salt-water mixing.

Magdalena Hajdukiewicz - One of the best experts on this subject based on the ideXlab platform.

Hosik Park - One of the best experts on this subject based on the ideXlab platform.

  • thin film nanocomposite membrane with cnt positioning in support layer for energy harvesting from saline water
    Chemical Engineering Journal, 2016
    Co-Authors: Moon Son, Hosik Park, Lei Liu, Hyeongyu Choi, Joon Ha Kim, Heechul Choi
    Abstract:

    Abstract The pressure retarded osmosis (PRO) process has been considered as an alternative and Renewable Technology to generate electricity from mixing two solutions of different salinities. However, improving the osmotic performance of semi-permeable membrane is still a major challenge in the PRO system. Therefore, thin-film nanocomposite (TFN) membrane was synthesized by using carbon nanotubes (CNT)-embedded-polyethersulfone (PES) supporting layer and polyamide active layer in this study. The prepared membranes were further employed in the PRO process to harvest energy from saline water. The water flux increase of the TFN membrane was promoted by CNT-induced porosity and the hydrophilicity of the support layer as well as by the chemical etching of the active layer. The water flux and maximum power density of the developed TFN membrane was found to be 87% (averaged from 2 bar to 10 bar) and 110% greater than for bare thin-film composite (TFC) membranes, respectively. Furthermore, the TFN membrane preparation could easily be scaled up using conventional fabrication methods with less than 2% additional material cost. Therefore, this finding could contribute to the commercialization of sustainable energy generation by utilizing the tremendous potential of fresh- and salt-water mixing.

  • thin film nanocomposite membrane with cnt positioning in support layer for energy harvesting from saline water
    Chemical Engineering Journal, 2016
    Co-Authors: Hosik Park, Hyeongyu Choi, Heechul Choi
    Abstract:

    Abstract The pressure retarded osmosis (PRO) process has been considered as an alternative and Renewable Technology to generate electricity from mixing two solutions of different salinities. However, improving the osmotic performance of semi-permeable membrane is still a major challenge in the PRO system. Therefore, thin-film nanocomposite (TFN) membrane was synthesized by using carbon nanotubes (CNT)-embedded-polyethersulfone (PES) supporting layer and polyamide active layer in this study. The prepared membranes were further employed in the PRO process to harvest energy from saline water. The water flux increase of the TFN membrane was promoted by CNT-induced porosity and the hydrophilicity of the support layer as well as by the chemical etching of the active layer. The water flux and maximum power density of the developed TFN membrane was found to be 87% (averaged from 2 bar to 10 bar) and 110% greater than for bare thin-film composite (TFC) membranes, respectively. Furthermore, the TFN membrane preparation could easily be scaled up using conventional fabrication methods with less than 2% additional material cost. Therefore, this finding could contribute to the commercialization of sustainable energy generation by utilizing the tremendous potential of fresh- and salt-water mixing.

Hyeongyu Choi - One of the best experts on this subject based on the ideXlab platform.

  • thin film nanocomposite membrane with cnt positioning in support layer for energy harvesting from saline water
    Chemical Engineering Journal, 2016
    Co-Authors: Moon Son, Hosik Park, Lei Liu, Hyeongyu Choi, Joon Ha Kim, Heechul Choi
    Abstract:

    Abstract The pressure retarded osmosis (PRO) process has been considered as an alternative and Renewable Technology to generate electricity from mixing two solutions of different salinities. However, improving the osmotic performance of semi-permeable membrane is still a major challenge in the PRO system. Therefore, thin-film nanocomposite (TFN) membrane was synthesized by using carbon nanotubes (CNT)-embedded-polyethersulfone (PES) supporting layer and polyamide active layer in this study. The prepared membranes were further employed in the PRO process to harvest energy from saline water. The water flux increase of the TFN membrane was promoted by CNT-induced porosity and the hydrophilicity of the support layer as well as by the chemical etching of the active layer. The water flux and maximum power density of the developed TFN membrane was found to be 87% (averaged from 2 bar to 10 bar) and 110% greater than for bare thin-film composite (TFC) membranes, respectively. Furthermore, the TFN membrane preparation could easily be scaled up using conventional fabrication methods with less than 2% additional material cost. Therefore, this finding could contribute to the commercialization of sustainable energy generation by utilizing the tremendous potential of fresh- and salt-water mixing.

  • thin film nanocomposite membrane with cnt positioning in support layer for energy harvesting from saline water
    Chemical Engineering Journal, 2016
    Co-Authors: Hosik Park, Hyeongyu Choi, Heechul Choi
    Abstract:

    Abstract The pressure retarded osmosis (PRO) process has been considered as an alternative and Renewable Technology to generate electricity from mixing two solutions of different salinities. However, improving the osmotic performance of semi-permeable membrane is still a major challenge in the PRO system. Therefore, thin-film nanocomposite (TFN) membrane was synthesized by using carbon nanotubes (CNT)-embedded-polyethersulfone (PES) supporting layer and polyamide active layer in this study. The prepared membranes were further employed in the PRO process to harvest energy from saline water. The water flux increase of the TFN membrane was promoted by CNT-induced porosity and the hydrophilicity of the support layer as well as by the chemical etching of the active layer. The water flux and maximum power density of the developed TFN membrane was found to be 87% (averaged from 2 bar to 10 bar) and 110% greater than for bare thin-film composite (TFC) membranes, respectively. Furthermore, the TFN membrane preparation could easily be scaled up using conventional fabrication methods with less than 2% additional material cost. Therefore, this finding could contribute to the commercialization of sustainable energy generation by utilizing the tremendous potential of fresh- and salt-water mixing.

Stanley S Reynolds - One of the best experts on this subject based on the ideXlab platform.

  • who should own a Renewable Technology ownership theory and an application
    International Journal of Industrial Organization, 2019
    Co-Authors: Talat S Genc, Stanley S Reynolds
    Abstract:

    Abstract We investigate the market implications of ownership of a new low-cost production Technology. We relate our theoretical findings to measure the impact of Renewable energy penetration into electricity markets and examine how the ownership of Renewable capacity changes market outcomes (prices, outputs, emissions). As current public policies influence Renewable energy ownership, this research provides useful insights for policy makers. We show how and why ownership of Renewable capacity matters when there is market power in energy market. We apply our findings to the wholesale electricity market in Ontario, Canada, to analyze the impact of different ownership structures for wind capacity expansions. Using both simulation analysis and empirical analysis of market data, we show that the price-reducing effects of wind expansion are smaller when a larger strategic firm owns new wind capacity. Lastly, we show that the effect of wind ownership on emissions depends on both the amount of generation displaced by wind output and the emissions rate of displaced generation.

  • who should own a Renewable Technology ownership theory and an application
    Social Science Research Network, 2018
    Co-Authors: Talat S Genc, Stanley S Reynolds
    Abstract:

    We investigate the market implications of ownership of a new low-cost production Technology. We relate our theoretical findings to measure the impact of Renewable energy penetration into electricity markets and examine how the ownership of Renewable capacity changes market outcomes (prices, outputs, emissions). As the current public policies influence the Renewable energy ownership, this research provides useful insights for policy makers. We show that ownership of Renewable capacity will matter when there is market power in energy market. We apply our findings to a wholesale electricity market to analyze the impact of different ownership structures for wind capacity expansions. We show that consumers enjoy better air quality under the largest firm's ownership of new generation, but at the expense of higher prices. We find that market structure and the shape of generation cost functions are the key drivers explaining the impact of Renewable ownership on market outcomes. Ex-post empirical analysis also supports our theoretical predictions.

  • who should own a Renewable Technology ownership theory and an application
    Research Papers in Economics, 2017
    Co-Authors: Talat S Genc, Stanley S Reynolds
    Abstract:

    We investigate the market implications of ownership of a new low-cost production Technology. We relate our theoretical findings to measuring the impact of Renewable energy penetration into electricity markets and examine how the ownership of Renewable capacity changes market outcomes (prices, outputs, emissions). As the current public policies influence the Renewable energy ownership, this research provides useful insights for policy makers. We show that ownership of Renewable capacity will matter when there is market power in energy market. We apply our findings to the Ontario wholesale electricity market to analyze the impact of different ownership structures for wind capacity expansions. We show that consumers enjoy better air quality under the largest firm's ownership, but at the expense of higher prices. We find that market structure and the shape of generation cost functions are the key drivers explaining the impact of Renewable ownership on market outcomes.