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Relevant bibliographies by topics / Hollow fiber reactor

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Academic literature on the topic 'Hollow fiber reactor'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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Journal articles on the topic "Hollow fiber reactor"

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Grimberg, S. J., M. J. Rury, K. M. Jimenez, and A. K. Zander. "Trinitrophenol treatment in a hollow fiber membrane biofilm reactor." Water Science and Technology 41, no. 4-5 (February 1, 2000): 235–38. http://dx.doi.org/10.2166/wst.2000.0450.

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Treatment of recalcitrant wastewaters in traditional suspended growth systems is ineffective due to the required large contact times and large aeration basins. Hollow-fiber gas permeable membranes are being investigated as a novel approach to overcome oxygen and 2,4,6-trinitrophenol (TNP) mass transfer limitations of conventional fixed film systems. Three independent hollow fiber biofilm reactors using bubbleless membrane aeration technology were used to treat TNP. The reactors contained 14, 30, or 57 fibers, with a fiber spacing of 3, 2.7, or 2.1 mm, respectively, which resulted in a packing factor of 0.5%, 1% and 2%. A pure culture of Nocardioides simplex (strain Nb), which has been shown to mineralize TNP, was immobilized on the surface of 281.5 (m outer diameter microporous fibers. Pure oxygen was supplied through the lumen of the fibers and diffused throughout the biofilm and into the reactor. Removal of TNP in the 14, 30, and 57 fiber reactors was 99.1, 83.2, and 85.4%, respectively at a contact time of approximately 14 hours and a TNP loading of 40 mg/day. Results indicate TNP diffusion into the biofilm limited performance at high substrate concentrations.

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Yang, Ming-Chien, and E. L. Cussler. "A hollow-fiber trickle-bed reactor." AIChE Journal 33, no. 10 (October 1987): 1754–56. http://dx.doi.org/10.1002/aic.690331023.

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REIKEN, STEVEN R., and DAINA M. BRIEDIS. "SCALE-UP OF HOLLOW FIBER REACTOR SYSTEMS." Chemical Engineering Communications 94, no. 1 (June 1990): 1–7. http://dx.doi.org/10.1080/00986449008911451.

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Davis, James C., and Dennis P. Peterson. "Hollow fiber post-column reactor for liquid chromatography." Analytical Chemistry 57, no. 3 (March 1985): 768–71. http://dx.doi.org/10.1021/ac00280a044.

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Diano, Nadia, Valentina Grano, Sergio Rossi, Umberto Bencivenga, Marianna Portaccio, Umberto Amato, Francesca Carfora, Maria Lepore, Francesco Saverio Gaeta, and Damiano Gustavo Mita. "Hollow-Fiber Enzyme Reactor Operating under Nonisothermal Conditions." Biotechnology Progress 20, no. 2 (September 5, 2008): 457–66. http://dx.doi.org/10.1021/bp034197l.

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Park, Tai Hyun, In Ho Kim, and Ho Nam Chang. "Recycle hollow fiber enzyme reactor with flow swing." Biotechnology and Bioengineering 27, no. 8 (August 1985): 1185–91. http://dx.doi.org/10.1002/bit.260270813.

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HATANAKA, Chiaki, Takanori NAGATOMI, and Kiyosi KUMADA. "Nitrogen removal by a hollow fiber biofilm reactor." Proceedings of the Symposium on Global Environment 9 (2001): 273–78. http://dx.doi.org/10.2208/proge.9.273.

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Adikane, H. V., and S. N. Nene. "Optimization of substrate conversion in hollow fiber reactor." Applied Biochemistry and Biotechnology 55, no. 2 (November 1995): 151–55. http://dx.doi.org/10.1007/bf02783555.

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Lee, K.-C., and B. E. Rittmann. "A novel hollow-fibre membrane biofilm reactor for autohydrogenotrophic denitrification of drinking water." Water Science and Technology 41, no. 4-5 (February 1, 2000): 219–26. http://dx.doi.org/10.2166/wst.2000.0448.

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A novel hollow-fiber membrane biofilm reactor (HFMBR) was developed to remove nitrate from contaminated drinking water using molecular hydrogen as a clean electron-donor substrate. The hollow fibers were sealed on one end and were pressurized with hydrogen on the other end. The counter-diffusion transfer of nitrate and hydrogen allowed 100% hydrogen transfer efficiency into the biofilm and achieved up to 99.9% hydrogen-utilization efficiency for denitrification. Partial denitrification met regulatory standards for nitrate and nitrite at the same time that relatively high steady-state nitrate fluxes (0.08 and 0.1 mg N/cm2−d) were achieved with liquid-phase hydrogen concentrations (0.009 and 0.07 mg H2/l) magnitudes lower than in previous studies. The low frequency of fiber-to-fiber contact in the upflowing liquid established good biofilm accumulation. The specific biofilm detachment rates were between 0.015 and 0.017 day−1, which attained biofilm thickness up to 179 μm. Finally, DOC and BDOC analyses showed that the DOC was increased, while the effluent BDOC was 0.5 mg/l.

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Gouveia Gil, Ana, Zhentao Wu, David Chadwick, and K. Li. "Microstructured Catalytic Hollow Fiber Reactor for Methane Steam Reforming." Industrial & Engineering Chemistry Research 54, no. 21 (May 18, 2015): 5563–71. http://dx.doi.org/10.1021/ie504953j.

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Dissertations / Theses on the topic "Hollow fiber reactor"

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Hong, Eock Kee. "Analysis of the hollow fiber membrane reactor using immobilized enzyme with deactivation." Ohio : Ohio University, 1986. http://www.ohiolink.edu/etd/view.cgi?ohiou1183132380.

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Czuprat, Oliver [Verfasser]. "Oxidative activation of light hydrocarbons in a perovskite hollow fiber membrane reactor / Oliver Czuprat." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover, 2010. http://d-nb.info/1010838008/34.

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Gilmore, Kevin R. "Treatment of High-Strength Nitrogen Wasetewater With a Hollow-Fiber Membrane-Aerated Biofilm Reactor: A Comprehensive Evaluation." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/28711.

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Protecting the quality and quantity of our water resources requires advanced treatment technologies capable of removing nutrients from wastewater. This research work investigated the capability of one such technology, a hollow-fiber membrane-aerated biofilm reactor (HFMBR), to achieve completely autotrophic nitrogen removal from a wastewater with high nitrogen content. Because the extent of oxygenation is a key parameter for controlling the metabolic processes that occur in a wastewater treatment system, the first part of the research investigated oxygen transfer characteristics of the HFMBR in clean water conditions and with actively growing biofilm. A mechanistic model for oxygen concentration and flux as a function of length along the non-porous membrane fibers that comprise the HFMBR was developed based on material properties and physical dimensions. This model reflects the diffusion mechanism of non-porous membranes; namely that oxygen follows a sorption-dissolution-diffusion mechanism. This is in contrast to microporous membranes in which oxygen is in the gas phase in the fiber pores up to the membrane surface, resulting in higher biofilm pore liquid dissolved oxygen concentrations. Compared to offgas oxygen analysis from the HFMBR while in operation with biofilm growing, the model overpredicted mass transfer by a factor of approximately 1.3. This was in contrast to empirical mass transfer coefficient-based methods, which were determined using either bulk aqueous phase dissolved oxygen (DO) concentration or the DO concentration at the membrane-liquid interface, measured with oxygen microsensors. The mass transfer coefficient determined with the DO measured at the interface was the best predictor of actual oxygen transfer under biofilm conditions, while the bulk liquid coefficient underpredicted by a factor of 3. The mechanistic model exhibited sensitivity to parameters such as the initial lumen oxygen concentration (at the entry to the fiber) and the diffusion coefficient and partitioning coefficients of oxygen in the silicone membrane material. The mechanistic model has several advantages over empirical-based methods. Namely, it does not require experimental determination of KL, it is relatively simple to solve without the use of advanced mathematical software, and it is based upon selection of the membrane-biofilm interfacial DO concentration. The last of these is of particular importance when designing and operating HFMBR systems with redox (aerobic/anoxic/anaerobic) stratification, because the DO concentration will determine the nature of the microenvironments, the microorganisms present, and the metabolisms that occur. During the second phase of the research, the coupling of two autotrophic metabolisms, partial nitrification to nitrite (nitritation) and anaerobic ammonium oxidation, was demonstrated in a single HFMBR. The system successfully treated a high-strength nitrogen wastewater intended to mimic a urine stream from such sources as extended space missions. For the last 250 days of operation, operating with an average oxygen to ammonia flux (JO2/JNH4+) of 3.0 resulted in an average nitrogen removal of 74%, with no external organic carbon added. Control of nitrite-oxidizing bacteria (NOB) presented a challenge that was addressed by maintaining the JO2/JNH4+ below the stoichiometric threshold for complete nitrification to nitrate (4.57 g O2 / g NH4 +). The DO-limiting condition resulted in formation of harmful gaseous emissions of nitrogen oxides (NO, N2O), which could not be prevented by short-term control strategies. Controlling JO2/JNH4+ prevented NOB proliferation long enough to allow an anaerobic ammoniaoxidizing bacteria (AnaerAOB) population to develop and be retained for >250 days. Addition of a supplemental nutrient solution may have contributed to the growth of AnaerAOB by overcoming a possible micronutrient deficiency. Disappearance of the gaseous nitrogen oxide emissions coincided with the onset of anaerobic ammonium oxidation, demonstrating a benefit of coupling these two autotrophic metabolisms in one reactor. Obvious differences in biofilm density were evident across the biofilm depth, with a region of low density in the middle of the biofilm, suggesting that low cell density or exocellular polymeric substances were primarily present in this region, Microbial community analysis using fluorescence in situ hybridization (FISH) did not reveal consistent trends with respect to length along the fibers, but radial stratification of aerobic ammonia-oxidizing bacteria (AerAOB), NOB, and AnaerAOB were visible in biofilm section samples. AerAOB were largely found in the first 25% of the biofilm near the membrane, AnaerAOB were found in the outer 30%, and NOB were found most often in the mid-depth region of the biofilm. This community structure demonstrates the importance of oxygen availability as a determinant of how microbial groups spatially distribute within an HFMBR biofilm. The combination of these two aspects of the research, predictive oxygen transfer capability and the effect of oxygen control on performance and populations, provides a foundation for future application of HFMBR technology to a broad range of wastewaters and treatment scenarios.
Ph. D.

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Orgill, James J. "Enhancement of Mass Transfer and Electron Usage for Syngas Fermentation." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4029.

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Biofuel production via fermentation is produced primarily by fermentation of simple sugars. Besides the sugar fermentation route, there exists a promising alternative process that uses syngas (CO, H2, CO2) produced from biomass as building blocks for biofuels. Although syngas fermentation has many benefits, there are several challenges that still need to be addressed in order for syngas fermentation to become a viable process for producing biofuels on a large scale. One challenge is mass transfer limitations due to low solubilities of syngas species. The hollow fiber reactor (HFR) is one type of reactor that has the potential for achieving high mass transfer rates for biofuels production. However, a better understanding of mass transfer limitations in HFRs is still needed. In addition there have been relatively few studies performing actual fermentations in an HFR to assess whether high mass transfer rates equate to better fermentation results. Besides mass transfer, one other difficulty with syngas fermentation is understanding the role that CO and H2 play as electron donors and how different CO and H2 ratios effect syngas fermentation. In addition to electrons from CO and H2, electrodes can also be used to augment the supply of electrons or provide the only source of electrons for syngas fermentation. This work performed an in depth reactor comparison that compared mass transfer rates and fermentation abilities. The HFR achieved the highest oxygen mass transfer coefficient (1062 h-1) compared to other reactors. In fermentations, the HFR showed very high production rates (5.3 mMc/hr) and ethanol to acetic acid ratios (13) compared to other common reactors. This work also analyzed the use of electrons from H2 and CO by C. ragsdalei and to study the effects of these two different electron sources on product formation and cell growth. This study showed that cell growth is not largely effected by CO composition although there must be at least some minimum amount of CO present (between 5-20%). Interestingly, H2 composition has no effect on cell growth. Also, more electron equivalents will lead to higher product formation rates. Following Acetyl-CoA formation, H2 is only used for product formation but not cell growth. In addition to these studies on electrons from H2 and CO, this work also assessed the redox states of methyl viologen (MV) for use as an artificial electron carrier in applications such as syngas fermentation. A validated thermodynamic model was presented in order to illustrate the most likely redox state of MV depending on the system setup. Variable MV extinction coefficients and standard redox potentials reported in literature were assessed to provide recommended values for modeling and analysis. Model results showed that there are narrow potential ranges in which MV can change from one redox state to another, thus affecting the potential use as an artificial electron carrier.

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Gouveia, Gil Ana Maria. "Catalytic hollow fibre membrane reactors for H2 production." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/39795.

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Pre-combustion decarbonisation is one of the three main routes widely discussed for CO2 capture from fossil fuels. This thesis focuses on the development of a catalytic hollow fibre membrane reactor for the combined steam methane reforming (SMR) and water-gas shift (WGS) reaction, using a Ni-based catalyst, and at a temperature window suitable for harvesting pure H2, a clean energy carrier, from the reaction by a Pd membrane. Apart from developing the catalyst and the Pd-based composite membrane, which are normally considered as the two essential components of a membrane reactor involving hydrogen separation, this study introduces the concept of incorporating the catalyst into a micro-structured ceramic hollow fibre substrate to promote mass transfer efficiency. Meanwhile, the impact of each fabrication step, i.e. catalyst composition and preparation, ceramic hollow fibre fabrication, catalyst incorporation and electroless plating of Pd membranes, on the assembly and final performance of the catalytic hollow fibre membrane reactor was systematically evaluated. In contrast to previous studies involving micro-structured ceramic hollow fibres for catalytic reactions, the one developed in this study possesses a plurality of unique micro-channels, with significant openings on the inner surface of the ceramic hollow fibre. In addition to reduced mass transfer resistance for both catalytic reaction and hydrogen permeation, a microstructure of this type significantly facilitates catalyst incorporation and, as a results, enable the application of this hollow fibres for a wider spectrum of catalytic reactions.

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Rahman, Mukhlis Bin A. "Catalytic hollow fibre membrane micro-reactors for energy applications." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/7097.

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An asymmetric ceramic hollow fibre is proposed as a substrate for the development of a catalytic hollow fibre microreactor (CHFMR) and a catalytic hollow fibre membrane microreactor (CHFMMR). The ceramic substrate that is prepared using the phase inversion and sintering technique has a finger-like structure and a sponge-like region in the inner region and the outer surface respectively. The finger-like structure consists of thousands of conical microchannels distributed perpendicularly to the lumen of ceramic hollow fibres onto which a catalyst is impregnated using the sol-gel Pechini method to improve a catalytic reaction. To further enhance the catalytic reaction, a membrane has been incorporated on the outer layer of ceramic hollow fibre. This study focuses on the use of palladium (Pd) and palladium/silver (Pd/Ag) membranes to separate hydrogen from reaction zones in the water-gas shift (WGS) reactions and the ethanol steam reforming (ESR) respectively. In the development of CHFMMR, the fabrication of Pd and Pd/Ag membranes is carried out prior to the catalyst impregnation process to avoid the dissolution of catalyst into the plating solution due to the presence of ammonia and ethylenediaminetetraacetic acid (EDTA). The catalytic activity tests show that the CHFMR, that does not have the Pd membrane on its outer surface, improves the carbon monoxide (CO) conversion compared with its fixed-bed counterpart. The presence of conical microchannels is expected to enhance the activities of the catalyst in the substrate. The incorporations of Pd and Pd/Ag membranes on the outer layer of ceramic hollow fibres enable pure hydrogen to be produced in the shell-side for both the WGS reaction and the ESR. The CHFMMR is used to remove one of the products enabling the WGS reaction to favour the formation of product. It also facilitates the small amount of catalyst to be used to produce significant amount of hydrogen in the ESR.

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Othman, Nur Hidayati Binti. "Micro-structured functional catalytic ceramic hollow fibre membrane reactor for methane conversion." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/28679.

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The most significant issue associated with the oxidative methane conversion processes is the use of pure oxygen, which is extremely expensive. By using a dense oxygen permeable membrane reactor, a possible decrease in the air separation cost can be expected due to the elimination of oxygen plants. Besides, higher reaction yields can be attained due to the selective dosing of oxygen into the reaction zone. This thesis focuses on the development and potential application of functional micro-structured catalytic ceramic hollow fibre membrane reactor (CHFMR) in oxidative methane conversion to syngas (known as partial oxidation of methane (POM)) and to ethane and ethylene (known as oxidative coupling of methane (OCM)). As the membrane reactor performance is crucially dependant on the oxygen permeation rate and good contact between oxygen and methane, two types of membrane reactor designs were proposed in this study. The first design involves the development of CHFMR that consists of two layers i.e.: an outer oxygen separation layer and an inner catalytic substrate layer, known as dual-layer catalytic hollow fibre membrane reactor (DL-CHFMR). The DL-CHFMR was fabricated via a novel single-step co-extrusion and co-sintering technique, in which the thickness and the composition of each functional layer can be controlled in order to improve reactor performance. The second design involves the development of CHFMR with an outer dense separation layer integrated with conical-shaped microchannels open at the inner surface, created via a viscous fingering induced phase inversion technique. Besides substantially reducing resistance across the membrane, the microchannels can also act as a structured substrate where catalyst can be deposited for the catalytic reaction to take place, forming a catalytic hollow fibre membrane microreactor (CHFMMR). Although the CHFMRs discussed in this study are designed particularly for POM and OCM, there are general advantages of such membrane structures and reactor designs for improving the overall reaction performance. Therefore, these reactor designs can be transferred to other important catalytic reactions.

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Liu, Yutie. "Novel ceramic hollow fibre membranes for fluid separation and chemical reaction." Thesis, Imperial College London, 2005. http://hdl.handle.net/10044/1/8271.

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Kingsbury, Benjamin F. K. "A morphological study of ceramic hollow fibre membranes : a perspective on multifunctional catalytic membrane reactors." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/6089.

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In recent years ceramic membrane technology has advanced considerably and ceramic membranes are now being applied to a number of high temperature applications, in particular in the energy industry as membrane reactors. Due to the thermal stability of ceramic materials, development in this area is extremely promising as these applications cannot be realized using polymeric membrane technology. Although a wide range of ceramic materials have been developed and processing techniques have improved considerably, the high production cost and lack of control over membrane properties when fabrication processes are scaled up are prohibitive in the commercial application of ceramic membrane technology. However, by using a dry-wet spinning process and the combined phase inversion and sintering technique, novel asymmetric hollow fibre morphologies consisting of a porous sponge-like structure and finger-like macrovoids in which catalyst may be deposited can be prepared in a cost effective way. These asymmetric hollow fibres are prepared from raw materials and are suitable for use in catalytic membrane reactors. Fibre morphology is determined by the rheological properties of the ceramic spinning suspension as well as the parameters used during fibre spinning and the effect of sintering during heat treatment. A generic mechanism has been suggested for the formation of asymmetric structures and the parameters at each of these three stages have been varied systematically in order to predict and control hollow fibre structure. Hollow fibres prepared in this way have been characterized in terms of morphology, pore size distribution, porosity and mechanical strength in terms of their applicability to membrane reactor applications. The versatility of this preparation technique is demonstrated by the inclusion of a chapter describing a catalytic membrane reactor for hydrogen production by water-gas-shift as well as a reactor for the dehydrogenation of propane. It should also be noted that this reactor design could be applied to a number of other catalytic gas phase reactions.

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Yen, Ray-Chi, and 顏瑞旗. "Hollow Fiber Reactor for Biological Denitrification." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/98198132499151922437.

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碩士
國立臺灣科技大學
化學工程研究所
81
Denitrification is part of biological process for removing nitrogenous compounds from wastewater. It converts Nitrate, Nitrire into Nitrogen using carb on source as electron donor. In this study,we immobilized enriched denitrifica tion microorganism with hollow fiber and used acetic acid as carbon source to carry out the process of denitrification. Two process were employed to treat the wastewater as follows: (1).Microfiltration hollow fiber reactor with cr- oss flow is applied to treat high strength nitrate industrial wastewater. (2).Dialysis hollow fiber reactor is utilized to treat low strength nitrate domestic wastewater. In the case of cross- flow filtration,the volume- tric loading was 21.2 kgNitrate per cubic meter per day with inflow water at pH=8,nitrate loading 3000p pm,and C/N ratio1.5. The nitrate and T.O.C removal could reach 99% and 95% ,respectively. For the dialysis hollow fiber reactor operation, 100ppm nitrate loading,could be reduced below 10ppm with H.R.T=0.5 hr.

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Book chapters on the topic "Hollow fiber reactor"

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Satyawali, Yamini, Ehiaze Augustine Ehimen, and Winnie Dejonghe. "Biocatalytic Hollow Fiber Membrane Reactor." In Encyclopedia of Membranes, 1–3. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-40872-4_1982-1.

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Nagy, Endre. "Hollow Fiber Enzymatic Reactor, Modeling of." In Encyclopedia of Membranes, 948–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_1243.

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Anjum, Nooram, Mohammad Danish, and Sarah Anjum. "Modeling and Simulation of Hollow Fiber Biocatalyst Membrane Reactor." In Proceedings of the 7th International Conference on Advances in Energy Research, 1431–40. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5955-6_136.

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Nagy, Endre. "Hollow Fibre Enzymatic Reactor, Modeling of." In Encyclopedia of Membranes, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-40872-4_1243-1.

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Kingsbury, Benjamin F. K., Zhentao Wu, and K. Li. "Inorganic Hollow Fibre Membranes for Chemical Reaction." In Membranes for Membrane Reactors, 117–53. Chichester, UK: John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9780470977569.ch3.

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Ulbricht, Mathias, and Heru Susanto. "Porous Flat Sheet, Hollow Fibre and Capsule Membranes by Phase Separation of Polymer Solutions." In Membranes for Membrane Reactors, 491–510. Chichester, UK: John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9780470977569.ch22.

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Adami, A., C. Fabiani, M. Leonardi, and M. Pizzichini. "Performance of Whole Cells Possessing Cellobiase Activity Immobilized into Hollow Fiber Membrane Reactors." In Membranes and Membrane Processes, 241–53. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-2019-5_25.

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Utamura, M., E. Ibe, S. Uchida, T. Sawa, T. Adachi, T. Shindo, and K. Ohsumi. "Poster 28. Hydraulic design optimization for hollow fibre filter system." In Water chemistry of nuclear reactor systems 5, 1: 329–330. Thomas Telford Publishing, 1989. http://dx.doi.org/10.1680/wconrs5v1.15470.0060.

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Bernard, A., C. Cavegn, T. Jomotte, P. Graber, and J. Y. Bonnefoy. "CONSTITUTIVE SECRETION OF SOLUBLE CD23 RECEPTORS IN HOLLOW FIBER REACTORS." In Production of Biologicals from Animal Cells in Culture, 751–53. Elsevier, 1991. http://dx.doi.org/10.1016/b978-0-7506-1103-9.50137-2.

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Isch, C., A. Bernard, J. Y. Bonnefoy, C. Cavegn, P. Graber, T. Jamotte, and H. D. Blasey. "Long Term Production of Soluble CD23 in Hollow Fiber Reactors." In Animal Cell Technology, 530–33. Elsevier, 1992. http://dx.doi.org/10.1016/b978-0-7506-0421-5.50119-7.

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Conference papers on the topic "Hollow fiber reactor"

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Ruiz, Maria Noel, W. Andrew Jackson, and Audra Morse. "Transport Processes within a Hollow Fiber Membrane Reactor: Mass Transfer and Hydrodynamics." In International Conference On Environmental Systems. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-01-3093.

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Rector, Tony, Jay Garland, Kristina Reid-Black, Richard F. Strayer, Mary Hummerick, Mike Roberts, and Lanfang Levine. "Treatment of an Early Planetary Base Wastestream in a Rotating Hollow Fiber Membrane Reactor." In 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments and Second NASA/ARO/ASCE Workshop on Granular Materials in Lunar and Martian Exploration. Reston, VA: American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40830(188)45.

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Kalontarov, Michael, Erica E. Jung, Aadhar Jain, Syed Saad Ahsan, and David Erickson. "Hollow Fiber Membrane (HFM) Facilitated CO2 Delivery to a Cyanobacteria Layer for Biofuel Production." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-66317.

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Photosynthetic bacteria have been shown to be advantageous organisms for biofuel production due to high CO2 fixation efficiencies, fast growth rates, and lower water requirements. Recently, cyanobacteria been metabolically engineered to efficiently secrete their products into a surrounding solution. This has the advantage of potentially eliminating the requirement to harvest and post-process the organisms in order to extract a biofuel, which is one of the most energy and water expensive processes in most biodiesel production strategies. Lagging behind the development of these organisms however has been the development of new photobioreactor (PBR) strategies that can efficiently delivery light and inorganic carbon to the bacteria while extracting the secreted product and O2 from the solution phase. Hollow fiber membranes (HFMs) are a method for bubble-less gas exchange that has been shown to be effective at enhancing mass transfer in applications such as wastewater and landfill treatment. HFM technology could be used to overcome the mass transport challenges associated with photobioreactors. HFM modules have been used to increase mass transfer of CO2 to the bulk media in bench scale PBRs; however, the use of HFM fibers as both a mean to exchange and deliver a gas phase throughout a PBR has not been explored. We have characterized the passive transport along a single fiber in a miniature reactor in previous work. Here we extend our work to arrays of HFM fibers. We performed a range of experiments to characterize bacteria growth rate and distribution as a function fiber spacing and active transport through the fibers, and report optimized values for these variables.

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Zhang, Lei, Khalid Farooq, Zhiyuan Liao, and Kewen Pang. "Hollow-Fiber Membrane Based Micro-Filtration Technology for the Treatment of Low Level Nuclear Laundry Waste and Floor Drain Water." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15165.

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A commonly used treatment for laundry waste and floor drain water in a nuclear power plant (NPP) in China involves filtration, followed by passing through a mixed ion exchange bed or evaporator. Due to the presence of foam and suspended solid in the laundry waste, the treatment systems require frequent maintenance and have a short filter service life. Pall ARIA™ platform, a hollow-fiber membrane based Micro-Filtration (MF) technology, was recently used at a German nuclear power plant to upgrade the low level radioactive laundry waste treatment system. The MF system with 0.1 μm average pore size and totally automated backwashable design was able to successfully concentrate the low level radioactive waste before it was sent to the evaporator. An 18-month long pilot test of the MF system, with a flow capacity of 3–6 m3/hr, using 3 modules, was performed at the 1300 MW, Pressurized Water Reactor (PWR) nuclear power plant, at Phillipsburg, Germany, to substitute its legacy centrifuge separators in waste water treatment system. During the long pilot testing, the MF technology amply demonstrated its capability for consistent high particulate removal efficiency, safe & reliable operation and high availability with average recovery rate of 95%. An average activity of 17900 Bq/m3 was reported in the filtrate. The 20X concentrated stream from the MF system was processed by the evaporator. The paper discusses the current liquid radwaste treatment practices in China, and the details of 18-month long trial of the MF system at Phillipsburg NPP.

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Zeng, Pingying, Kang Wang, Ryan Leon Falkenstein-Smith, and Jeongmin Ahn. "Single-Phase Ceramic Membranes Integrated With Combustion Processes." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62351.

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La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF6428) hollow fibre oxygen-permeable membranes were fabricated by extrusion technique. The oxygen permeability of a blank hollow fibre membrane was investigated with helium as sweeping gas. The oxygen permeation flux result was reported, agreeing very well with previous work. Then the hollow fibre membrane was packed with LSCF6428 catalyst and assembled as hollow fibre membrane reactor for methane combustion, aiming to separate the CO2 in the combustion exhaust from the nitrogen in air. The CO2 selectivity at various conditions was studied.

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Unterkofler, Sarah, Ruth J. McQuitty, Tijmen G. Euser, Nicola J. Farrer, Peter J. Sadler, and Philip St J. Russell. "Optofluidic hollow-core photonic crystal fiber coupled to mass spectrometry for rapid photochemical reaction analysis." In CLEO: Science and Innovations. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/cleo_si.2012.cw1g.1.

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7

Gentleman, Alexander S., Ermanno Miele, Takashi Lawson, Philipp Köhler, Sanmun Kim, Sultaan Yousaf, Daniel Antón Garcia, et al. "In-Situ Raman Spectroscopy of Reaction Products in Optofluidic Hollow-Core Fiber Microreactors l'? 17." In Conference on Lasers and Electro-Optics/Pacific Rim. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/cleopr.2020.c2h_2.

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Cantini, Marco, Gianfranco B. Fiore, Alberto Redaelli, and Monica Soncini. "CFD-Aided Design of a Dynamic Culture System for the Co-Culture of Adherent and Non-Adherent Cells." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206431.

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Haematopoietic stem cell (HSC) transplantation has been widely used to treat patients that have undergone high-dose chemotherapy or radiotherapy for haematological or non-haematological malignancies, and is currently investigated for the treatment of several other pathologic conditions. Nevertheless, present and expected clinical applications are hindered by the shortage of cells available for transplantation. Hence, many researchers have attempted to achieve an in vitro expansion of HSCs, using different experimental set-ups and approaches, which range from traditional static monolayer cultures to three-dimensional (3D) dynamic systems. Specifically, several bioreactor systems have been proposed, including perfusion chambers, stirred, rotating, hollow fiber, and packed bed reactors [1]. Taken together, literature studies suggest that a dynamic 3D culture system may provide superior expansion of HSCs.

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Cheng, Ya, and Zhizhan Xu. "Hybrid Integration in Photosensitive Glass Using 3D Femtosecond Laser Micromachining and Its Commercial Potential." In 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2007. http://dx.doi.org/10.1115/mnc2007-21365.

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By shrinking a roomful of laboratory equipments and packing them into a palm-size chip, single Lab-on-a-chip devices are capable of performing a variety of chemical and biological analyses with reduction of reagent consumption, waste production, analysis time and labor cost. However, difficulties in packaging and assembly have been major challenging issues in the manufacture of Lab-on-a-chip devices. To tackle this problem, we recently combined the 3D femtosecond (fs) laser microfabrication technique and the multifunctionality of a photosensitive glass called Foturan. This development enables us to form various true 3D hollow microstructures inside or on the surface of Foturan glass with one continuous processing. Using this technique, a variety of micro-chemical reactor structures, including microchannels, microchambers, and microvalves, have been fabricated inside Foturan glass with an approximate spatial resolution of 10μm. Since the microstructuring of Foturan glass by fs laser is a non-ablative photochemistry processing, the fabricated internal surface is smooth and free of debris and cracks. The smooth surfaces can thus be used as microoptical elements to effectively reflect/deflect light beams. For the purpose of further smoothening the etched internal surface, we applied an additional annealing to the samples after etching by which the average roughness was brought down to ∼0.8nm on the laser scanned surface. Thus, we are able to fabricate microoptical mirrors, micro-beam splitters, freestanding optical fibers, and microoptical lenses in the glass. We have also demonstrated the functions of all these structures using a He-Ne laser. Functional micro-devices such as microfluidic dye lasers were successfully fabricated by integrating the microoptical and microfluidic components inside the glass, and lasing action was confirmed by analyzing the emission spectra at different pumping powers. The commercial potential of this technique is also discussed in this paper.

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Reports on the topic "Hollow fiber reactor"

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Ma, Y. H., W. R. Moser, S. Pien, and A. B. Shelekhin. Development of hollow fiber catalytic membrane reactors for high temperature gas cleanup. Office of Scientific and Technical Information (OSTI), October 1994. http://dx.doi.org/10.2172/10185653.

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Ma, Yi H., M. R. Moser, and S. M. Pien. Development of hollow-fiber catalytic-membrane reactors for high-temperature gas cleanup. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/10110112.

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3

Ma, Yi Hua, W. R. Moser, S. Pien, and A. B. Shelekhin. Development of hollow fiber catalytic membrane reactors for high temperature gas cleanup. Final report, September 1989--March 1994. Office of Scientific and Technical Information (OSTI), July 1994. http://dx.doi.org/10.2172/10183450.

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