“…Example of those methods are chemical absorption using Amine called Amine Absorption, adsorption using solid in example Zeolites or using Activated Carbon , physical process using membrane polymer and the use of cryogenic or very low temperature process to capture carbon [4], [8], [9]. Part of the method is also the idea to capture carbon and then to store it under (sub surface storage), [10], however another researcher reported the environmental impact of the sub surface storage mentioned above [11].…”
Abstract. Microalgae have been viewed as one of potential solution for CO 2 biofixation or CO 2 sequestration. However, many factors need to be evaluated to support development of CO 2 biofixation. One important environmental factor for the growth of micro algae is related with light requirement. The aim of this study was to evaluate the effect of light intensity and photoperiod on growth of Chlorellapyrenoidosa (C.pyrenoidosa) and CO 2 biofixation. Experiments were carried out in 1000 mL semi batch photo bioreactors, purged continuously with air (0.034% CO 2 ). An Experiment of Factorial Design was employed in which the light intensity was evaluated 4 level at 2000, 4000, 6000 and 8000 lux with 3 level of photo period at L/D (light /dark) 8 hours/16 hours; L/D 12 hours/12 hours and L/D 16 hours/8 hours. The result indicated that both light intensity and photo period had significant effect (p< 0.05) on growth of C. pyrenoidosa. However, the photo period showed stronger effect relative to light intensity on growth of C.pyrenoidosa within the range reviewed. The interaction between the two factors was indicative but statistically not significant. Best growth profile sustained at combination of L/D 16 hours/8 hours of photoperiod and light intensity of 8000 lux with the highest average biomass observed at 0.516 ± 0.069gr/L. An increase in CO 2 biofixation rate of around 2 times was also observed between highest setting (8000 lux; L/D 16/12 hours) relative to that of lowest setting (2000 lux; L/D 8/12 hours).
“…Example of those methods are chemical absorption using Amine called Amine Absorption, adsorption using solid in example Zeolites or using Activated Carbon , physical process using membrane polymer and the use of cryogenic or very low temperature process to capture carbon [4], [8], [9]. Part of the method is also the idea to capture carbon and then to store it under (sub surface storage), [10], however another researcher reported the environmental impact of the sub surface storage mentioned above [11].…”
Abstract. Microalgae have been viewed as one of potential solution for CO 2 biofixation or CO 2 sequestration. However, many factors need to be evaluated to support development of CO 2 biofixation. One important environmental factor for the growth of micro algae is related with light requirement. The aim of this study was to evaluate the effect of light intensity and photoperiod on growth of Chlorellapyrenoidosa (C.pyrenoidosa) and CO 2 biofixation. Experiments were carried out in 1000 mL semi batch photo bioreactors, purged continuously with air (0.034% CO 2 ). An Experiment of Factorial Design was employed in which the light intensity was evaluated 4 level at 2000, 4000, 6000 and 8000 lux with 3 level of photo period at L/D (light /dark) 8 hours/16 hours; L/D 12 hours/12 hours and L/D 16 hours/8 hours. The result indicated that both light intensity and photo period had significant effect (p< 0.05) on growth of C. pyrenoidosa. However, the photo period showed stronger effect relative to light intensity on growth of C.pyrenoidosa within the range reviewed. The interaction between the two factors was indicative but statistically not significant. Best growth profile sustained at combination of L/D 16 hours/8 hours of photoperiod and light intensity of 8000 lux with the highest average biomass observed at 0.516 ± 0.069gr/L. An increase in CO 2 biofixation rate of around 2 times was also observed between highest setting (8000 lux; L/D 16/12 hours) relative to that of lowest setting (2000 lux; L/D 8/12 hours).
“…Membrane technology plays an important role in various environmental and energy processes, such as CO 2 capture (Zou and Ho, 2008;Hussain and Hägg, 2010;Brunetti et al, 2010;Yang et al, 2008), biogas upgrading (Deng and Hägg, 2010;Makaruk et al, 2010;Pakizeh et al, 2013;Momeni and Pakizeh, 2013), natural gas sweetening (Bernardo et al, 2009;Peters et al, 2011;Baker and Lokhandwala, 2008), and hydrogen production (Sà et al, 2009;Clem et al, 2006) and can potentially compete with some traditional separation methods in terms of energy requirements and economic costs (Xuezhong and Hägg, 2012).…”
-Matrimid®5218 hollow fiber membranes were prepared using the dry-wet spinning process. The transport properties were measured with pure gases (H 2 , CO 2 , N 2 , CH 4 and O 2 ) and with a mixture (30% CO 2 and 70% N 2 ) in dry and wet conditions at 25 °C, 50 °C, 60 °C and 75 °C and up to 600 kPa. Interesting values of single gas selectivity up to 60 °C (between 31 and 28 for CO 2 /N 2 and between 33 and 30 for CO 2 /CH 4 ) in dry condition were obtained. The separation factor measured for the mixture was 20% lower compared to the single gas selectivity, in the whole temperature range analyzed. In saturation conditions the data showed that water influences the performance of the membranes, inducing a reduction of the permeance of all gases. Moreover, the presence of water caused a decrease of single gas selectivity and separation factor, although not so significant, highlighting the very high water resistance of hollow fiber membrane modules.
“…Based on this process, the membrane has a support coated and cross linked polyvinilamine, which serves as a fixed carrier of CO 2 and a "catalyst" (in the form of 3 with combination of moisture), helps quickly remove and transport CO 2 through the membrane lumen. It is reported through the improvement of this process, CO 2 /N 2 selectivity has approached 174 and 200 by the same research group [40,41].…”
“…Modeling results indicate that facilitated transport membranes could capture CO 2 efficiently even in the concentration of as low as 10% in flue gas, with 90% efficiency, 90% CO 2 purity with competitive cost to that of aqueous amine scrubbing [41].…”
CO 2 capture from post combustion does not need significant alteration of the current power generation facilities and is therefore of more interests to the research and industrial circles. Polymeric membrane separations, which are based mainly on physical phenomena, are easy for operation and to scale up. The details and future research trends are covered in this most updated review, which serve as an excellent technique reference for the research circle and technology evaluation for the related industrial circle.
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