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Two-phase Partitioning Bioreactor, Application of Cloud Point System in Bioconversion

Wang Zhilong

Strategic Study of CAE 2005, Volume 7, Issue 5,   Pages 73-78

Abstract:

The two-phase partitioning bioreactor is usually applied in many bioprocesses for enhancing the productivity. The controlled substrate delivery from the non-aqueous phase to aqueous phase opens a new area of application of this strategy for enhancing the substrate solubility and eliminating the substrate inhibition of bioprocesses, such as bioconversion, biodegradation, etc. The extraction product from bioreaction phase has advantages over conventional media, such as removing the product inhibition on the microorganism, protecting the product form further degradation and cutting down the effluent treatment costs as a result of the use of a more concentrated feedstock. This article examines recent research on methods of the two-phase partitioning bioreactor. The practical potential of cloud point system as a novel two-phase partitioning bioreactor is illustrated by reference to a particular bioconversion, namely the side-chain cleavage of cholesterol to produce a pharmaceutical intermediate androsta-diene-dione (ADD).

Keywords： two-phase partitioning     bioconversion     nonionic surfactant     cloud point system     bioreactor    

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The construction of pseudo-Janus silica/surfactant assembly and their application to stabilize Pickering

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1101-1113 doi: 10.1007/s11705-021-2095-1

Abstract: findings of this study could help to better understand the construction mechanism of pseudo-Janus silica/surfactant

Keywords： Janus nanoparticles     surfactant     double phase inversion     self-assembly     enhanced oil recovery    

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Progress in use of surfactant in nearly static conditions in natural gas hydrate formation

Zhen PAN, Yi WU, Liyan SHANG, Li ZHOU, Zhien ZHANG

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 463-481 doi: 10.1007/s11708-020-0675-2

Abstract: Besides, the factors influencing surfactant-promoted hydrate formation, including the type, concentration, and structure of the surfactant, are also described.establishing kinetic and thermodynamic models to simulate the factors affecting the formation of hydrate in surfactant-containing

Keywords： gas hydrate     kinetic hydrate promoter     compounding     model     surfactant     mechanism    

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Stability of three-dimensional printable foam concrete as function of surfactant characteristics

Frontiers of Structural and Civil Engineering   Pages 935-947 doi: 10.1007/s11709-023-0964-z

Abstract: The extrusion process likely affects the foam stability which necessitates the investigation into surfactantTo address this research gap, the effects of surfactant characteristics on the stability, extrudabilitysodium lauryl sulfate stabilized with carboxymethyl cellulose sodium salt, and natural-based hingot surfactantThe results were then correlated with surfactant qualities, such as viscosity and surface tension, toBased on the experimental results, surfactant solu1tion with viscosity exceeding 5 mPa·s and surface

Keywords： foam concrete     3D printable concrete     stability     rheology     air void microstructure    

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Effect of nonionic side chain length of polycarboxylate-ether-based high-range water-reducing admixture

Süleyman ÖZEN, Muhammet Gökhan ALTUN, Ali MARDANI-AGHABAGLOU, Kambiz RAMYAR

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1573-1582 doi: 10.1007/s11709-020-0680-x

Abstract: this study, three different polycarboxylate-ether-based water-reducing admixtures with the same free nonioniccontent, anionic/nonionic molar ratio, and main chain length and different side chain lengths were produced

Keywords： water-reducing admixture     side chain length     cement paste     fluidity     compressive strength    

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Multiphase surfactant-assisted reaction-separation system in a microchannel reactor

Salah ALJBOUR, Tomohiko TAGAWA, Mohammad MATOUQ, Hiroshi YAMADA

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 33-38 doi: 10.1007/s11705-009-0108-6

Abstract: The Lewis acid-catalyzed addition of trimethylsilyl cyanide to -chlorobenzaldehyde in a microchannel reactor was investigated. The microchannel was integrated to promote both reaction and separation of the biphase system. FeF and Cu(triflate) were used as water-stable Lewis acid catalysts. Sodium dodecyl sulfate was incorporated in the organic-aqueous system to enhance the reactivity and to manipulate the multiphase flow inside the microchannel. It was found that the dynamics and the kinetics of the multiphase reaction were affected by the new micellar system. Parallel multiphase flow inside the microchannel was obtained, allowing for continuous and acceptable phase separation. Enhanced selectivity was achieved by operating at lower conversion values.

Keywords： Lewis acid catalysis     multiphase reactions     process intensification     microchannel reactor     green engineering    

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study on the control of black smoke pollution from the ceramic kilns based on the mechanism of the surfactant

CUI Xiao, LI Caiting, WANG Fei, LI Shanhong, XIAO Chenchang, PENG Yu, ZHAI Yunbo

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 109-115 doi: 10.1007/s11783-008-0021-0

Abstract: sedimentation and wettability state of the carbon black, the complex solution of the coagulant and surfactant
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Organosilane surfactant-assisted synthesis of mesoporous SSZ-39 zeolite with enhanced catalytic performance

Hao Xu, Chi Lei, Qinming Wu, Qiuyan Zhu, Xiangju Meng, Daniel Dai, Stefan Maurer, Andrei-Nicolae Parvulescu, Ulrich Müller, Fengshou Xiao

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 267-274 doi: 10.1007/s11705-019-1845-9

Abstract: Herein, we report the synthesis of mesoporous SSZ-39 zeolite using an organosilane surfactant, , -dimethyl

Keywords： SSZ-39 zeolite     mesopores     organosilane surfactant     MTO reaction     soft template     mass transfer    

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Nanobubble Dynamics in Aqueous Surfactant Solutions Studied by Liquid-Phase Transmission Electron Microscopy Letter

Yuna Bae, Sungsu Kang a,b, Byung Hyo Kim, Kitaek Lim, Sungho Jeon, Sangdeok Shim, Won Chul Lee, Jungwon Park

Engineering 2021, Volume 7, Issue 5,   Pages 630-635 doi: 10.1016/j.eng.2021.02.006

Abstract: without interfaces merging, while a narrow distance is maintained between the interfaces of interacting surfactant-laden

Keywords： Nanobubbles     In situ TEM     Liquid-phase TEM     Surfactant    

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Formation of reverse micelles in supercritical carbon dioxide and its thermodynamics

WEN Zhen, DANG Zhi, ZHU Zhixin, ZONG Minhua

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 283-286 doi: 10.1007/s11705-007-0051-3

Abstract: Specifically for the nonionic surfactant TX-10, the formation of reverse micelles is dependent on theentropy increase in the system, while for the anionic surfactant AOT, the micellization is mainly dominated

Keywords： micellization     surfactant AOT     TX-10     sulfosuccinate     solubilization    

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Reinforcement of the two-stage leaching of laterite ores using surfactants

Peiyu Zhang, Hairui Wang, Jingcheng Hao, Jiwei Cui

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 562-570 doi: 10.1007/s11705-020-1946-5

Abstract: The effect of surfactant type (cationic, anionic, and nonionic surfactants) on the leaching ratio of

Keywords： laterite ore     Ni     surfactant     acid leaching    

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Influences of spinel type and polymeric surfactants on the size evolution of colloidal magnetic nanocrystals (MFe

Tahereh R. BASTAMI,Mohammad H. ENTEZARI,Chiwai KWONG,Shizhang QIAO

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 378-385 doi: 10.1007/s11705-014-1441-y

Abstract: Less amounts of surfactant or capping agent on the surface of nanoparticles lead to the higher crystalibitythat the type of spinel (normal or inverted spinel) plays a key role on the affinity of the polymeric surfactant

Keywords： spinel type     polymeric surfactant     size evolution     mangnetic ferrite nanoparticle    

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Rheological behavior of mixed system of ionic liquid [C

Zimeng HE,Ling YUE,Meng LI,Yazhuo SHANG,Honglai LIU

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 232-241 doi: 10.1007/s11705-015-1511-9

Abstract: We report on the rheological behavior of wormlike micelles constructed by ionic liquid surfactant [Cmim]Br (1-octyl-3-methylimidazolium bromide) and anionic surfactant sodium oleate (NaOA) in aqueous solutionThe effects of surfactant composition, total surfactant concentration, added salts, and temperature werecomposition and total surfactant concentration.The Cole-Cole plots demonstrate that the systems (total surfactant concentration falls within 0.17–0.35

Keywords： rheological behavior     ionic liquid surfactant     sodium oleate     wormlike micelles     viscoelasticity    

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New insights into different surfactants’ impacts on sludge fermentation: Focusing on the particular metabolic processes and microbial genetic traits

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1527-6

Abstract:

• The promoting effects for VFA generation follow the order of APG>SDBS>HTAB.

Keywords： Waste activated sludge (WAS)     Volatile fatty acids (VFA)     Surfactant types     Functional microorganisms    

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Controlled synthesis of uniform silver nanowires with high aspect ratios in aqueous solutions of gemini surfactant

XU Jian, LIU Weijun, LIU Honglai, HU Ying

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 221-227 doi: 10.1007/s11705-007-0040-6

Abstract: In the presence of gemini surfactant 1,3-bis(cetyldimethylammonium) propane dibromide (16-3-16), the

Keywords： solution-phase     photoelectron spectroscopy     16-3-16     surfactant     transmission    

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Title Author Date Type Operation

Two-phase Partitioning Bioreactor, Application of Cloud Point System in Bioconversion

Wang Zhilong

Journal Article

The construction of pseudo-Janus silica/surfactant assembly and their application to stabilize Pickering

Journal Article

Progress in use of surfactant in nearly static conditions in natural gas hydrate formation

Zhen PAN, Yi WU, Liyan SHANG, Li ZHOU, Zhien ZHANG

Journal Article

Stability of three-dimensional printable foam concrete as function of surfactant characteristics

Journal Article

Effect of nonionic side chain length of polycarboxylate-ether-based high-range water-reducing admixture

Süleyman ÖZEN, Muhammet Gökhan ALTUN, Ali MARDANI-AGHABAGLOU, Kambiz RAMYAR

Journal Article

Multiphase surfactant-assisted reaction-separation system in a microchannel reactor

Salah ALJBOUR, Tomohiko TAGAWA, Mohammad MATOUQ, Hiroshi YAMADA

Journal Article

study on the control of black smoke pollution from the ceramic kilns based on the mechanism of the surfactant

CUI Xiao, LI Caiting, WANG Fei, LI Shanhong, XIAO Chenchang, PENG Yu, ZHAI Yunbo

Journal Article

Organosilane surfactant-assisted synthesis of mesoporous SSZ-39 zeolite with enhanced catalytic performance

Hao Xu, Chi Lei, Qinming Wu, Qiuyan Zhu, Xiangju Meng, Daniel Dai, Stefan Maurer, Andrei-Nicolae Parvulescu, Ulrich Müller, Fengshou Xiao

Journal Article

Nanobubble Dynamics in Aqueous Surfactant Solutions Studied by Liquid-Phase Transmission Electron Microscopy

Yuna Bae, Sungsu Kang a,b, Byung Hyo Kim, Kitaek Lim, Sungho Jeon, Sangdeok Shim, Won Chul Lee, Jungwon Park

Journal Article

Formation of reverse micelles in supercritical carbon dioxide and its thermodynamics

WEN Zhen, DANG Zhi, ZHU Zhixin, ZONG Minhua

Journal Article

Reinforcement of the two-stage leaching of laterite ores using surfactants

Peiyu Zhang, Hairui Wang, Jingcheng Hao, Jiwei Cui

Journal Article

Influences of spinel type and polymeric surfactants on the size evolution of colloidal magnetic nanocrystals (MFe

Tahereh R. BASTAMI,Mohammad H. ENTEZARI,Chiwai KWONG,Shizhang QIAO

Journal Article

Rheological behavior of mixed system of ionic liquid [C

Zimeng HE,Ling YUE,Meng LI,Yazhuo SHANG,Honglai LIU

Journal Article

New insights into different surfactants’ impacts on sludge fermentation: Focusing on the particular metabolic processes and microbial genetic traits

Journal Article

Controlled synthesis of uniform silver nanowires with high aspect ratios in aqueous solutions of gemini surfactant

XU Jian, LIU Weijun, LIU Honglai, HU Ying

Journal Article