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Preconcentration of trace elements by adsorption onto a niobium wire for electrothermal atomization atomic

Satoshi KANECO, Hiroaki KITANAGA, Hideyuki KATSUMATA, Tohru SUZUKI

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 432-435 doi: 10.1007/s11705-012-1219-z

Abstract: In the present work, a new preconcentration method of trace elements by adsorption onto a niobium wire

Keywords： preconcentration     adsorption onto niobium wire     electrothermal atomization atomic absorption spectrometry    

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Evaluation of global niobium flow modeling and its market forecasting

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 286-293 doi: 10.1007/s11708-022-0823-y

Abstract: Niobium (Nb) is considered a unique earth metal as it is related to many emerging technologies.

Keywords： niobium (Nb)     sustainability     substance flow analysis     recycling     industrial ecology    

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Elevated temperature creep model of parallel wire strands

Frontiers of Structural and Civil Engineering   Pages 1060-1071 doi: 10.1007/s11709-023-0981-y

Abstract: Parallel wire strands (PWSs), which are widely used in prestressed steel structures, are typically in

Keywords： parallel wire strands     experimental study     elevated temperature creep model    

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Progress of Tantalum & Niobium Industry in China

He Jilin

Strategic Study of CAE 2003, Volume 5, Issue 5,   Pages 40-46

Abstract:

This article introduces the development of tantalum & niobium industry in China and in the world, especially reviews the metallurgical and working technology development of tantalum & niobium inInview of the development condition and economic status of Chinese tantalum & niobium industry in

Keywords： tantalum & niobium industry     technology     continuative development     market    

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Numerical studies of dynamic behavior of liquid film on single-layer wire mesh with different wettabilities

Frontiers of Chemical Science and Engineering   Pages 1672-1680 doi: 10.1007/s11705-022-2205-8

Abstract: Droplet impacting on the stainless steel wire mesh is very common in chemical devices, like a rotatingSurface wettability of wire mesh significantly affects the liquid flow pattern and liquid dispersionThe dynamic behavior of liquid film on the surface of wire mesh can be divided into the following threeCompared to the hydrophilic wire mesh, the final wetting area of hydrophobic wire mesh is zero in mostof hydrophobic wire mesh is 41.76–237.37 μm.

Keywords： stainless steel wire mesh     computational fluid dynamics     surface wettability     liquid film     impacting    

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Adsorption of herring sperm DNA onto pine sawdust biochar: Thermodynamics and site energy distribution

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1579-7

Abstract:

● Adsorption of environmental deoxyribonucleic acid on biochar was studied.

Keywords： Environmental deoxyribonucleic acid     Antibiotic resistance genes     Biochar     Adsorption thermodynamics    

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Grafting of PEG400 onto the surface of LLDPE/SMA film

CHEN Gufeng, ZHANG Yi, XU Jiarui, ZHU Yafei

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 128-131 doi: 10.1007/s11705-007-0024-6

Abstract: Results show that PEG400 can be grafted onto the surface of the films via esterification with SMA.The immersion of PEG promotes the enrichment of SMA onto the surface of the films.The water contact angle data show that grafting of PEG400 onto PE can greatly improve the hydrophilicity

Keywords： hydrophilicity     temperature     effective     immersion     reflection accessory    

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Experimental study on wire breakage detection by acoustic emission

Limin SUN, Ji QIAN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 503-509 doi: 10.1007/s11709-011-0132-8

Abstract: This paper experimentally investigated wire breakage detection in a steel cable by acoustic emissionthe attenuation laws of waveform amplitudes were discussed based on stress wave propagation in the wire, which was generated by kNocking and wire breakage.Compared with the other source, the wire breakage source contained a much higher energy, and thus, thewire breakage signal can be distinguished from the other source by comparing the non-attenuation energy

Keywords： acoustic emission (AE)     waveform     wire breakage     attenuation factor     wave velocity    

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A ternary mechanism for the facilitated transfer of metal ions onto metal–organic frameworks: implications

Frontiers of Chemical Science and Engineering   Pages 1632-1642 doi: 10.1007/s11705-022-2187-6

Abstract: Although metal–organic frameworks offer a new platform for developing versatile sorption materials, yet coordinating the functionality, structure and component of these materials remains a great challenge. It depends on a comprehensive knowledge of a “real sorption mechanism”. Herein, a ternary mechanism for U(VI) uptake in metal–organic frameworks was reported. Analogous MIL-100s (Al, Fe, Cr) were prepared and studied for their ability to sequestrate U(VI) from aqueous solutions. As a result, MIL-100(Al) performed the best among the tested materials, and MIL-100(Cr) performed the worst. The nuclear magnetic resonance technique combined with energy-dispersive X-ray spectroscopy and zeta potential measurement reveal that U(VI) uptake in the three metal–organic frameworks involves different mechanisms. Specifically, hydrated uranyl ions form outer-sphere complexes in the surface of MIL-100s (Al, Fe) by exchanging with hydrogen ions of terminal hydroxyl groups (Al-OH2, Fe-OH2), and/or, hydrated uranyl ions are bound directly to Al(III) center in MIL-100(Al) through a strong inner-sphere coordination. For MIL-100(Cr), however, the U(VI) uptake is attributed to electrostatic attraction. Besides, the sorption mechanism is also pH and ionic strength dependent. The present study suggests that changing metal center of metal–organic frameworks and sorption conditions alters sorption mechanism, which helps to construct effective metal–organic frameworks-based sorbents for water purification.

Keywords： U(VI)     metal–organic frameworks     adsorption mechanism     metal node    

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Adsorptive behaviors of humic acid onto freshly prepared hydrous manganese dioxides

LIU Ruiping, LI Guibai, YANG Yanling, HE Wenjie, HAN Hongda

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 240-245 doi: 10.1007/s11783-007-0041-1

Abstract: This study focused on the adsorptive behaviors of humic acid onto freshly prepared hydrous MnO(s) (δMnOThis study indicated that humic acid with higher molecular mass exhibited more tendency of adsorbing onto

Keywords： Mg     molecular     functional     UV-Vis spectra     prepared hydrous    

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Response of bioaerosol cells to photocatalytic inactivation with ZnO and TiO impregnated onto Perlite

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1335-9

Abstract:

•ZnO/Perlite inactivated 72% of bioaerosols in continuous gas phase.

Keywords： Immobilized catalysts     Continuous flow     Photocatalysis     Bioaerosols     Cytotoxicity     Inactivation mechanism    

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Numerical study of droplet dynamics impinging onto steel plate covered with scale layer

Jan BOHá?EK, Ale? HORáK

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 389-398 doi: 10.1007/s11465-010-0108-8

Abstract: The steel hot rolling process is inseparably connected to an oxide layer called “scale” at high temperatures. Hydraulic descaling of rolled material is a part of all rolling trains. Surface quality after descaling is fundamental for the final surface quality of a rolled product. The process itself is not theoretically well described; various different approaches have been used to clarify the descaling problem. This paper describes the dynamics of high-speed impact between the compressible water droplet and the steel scale layer. The phenomenon is known as water hammer effect. The purpose of this study is to numerically verify the fact that impact stress can be a significant factor during the descaling process. Considering a high droplet impact speed (100–300 ms ), inferential extremely short time interval (0.1–5 μs) peaks in impact pressure reaching 300 MPa can be found. Droplet dynamics was simulated with the help of LS-Dyna solver, whereas the stress analysis was performed in ANSYS interface. The extreme pressure peaks of very short duration in an impact area are a new phenomenon in the descaling theory.

Keywords： hydraulic descaling     scale     rolling     water-hammer     descaling theory    

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Effects of phosphorus concentration on Cr(VI) sorption onto phosphorus-rich sludge biochar

DING Wenchuan,PENG Wenlong,ZENG Xiaolan,TIAN Xiumei

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3,   Pages 379-385 doi: 10.1007/s11783-013-0606-0

Abstract: To investigate effects of phosphorus content on Cr(VI) sorption onto phosphorus-rich biochar, sewageThen, a portion of Cr(III) in form of various phosphate precipitates was bound onto biochar surface and

Keywords： phosphorus     biochar     sewage sludge     hexavalent chromium     adsorption    

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Experimental study of free abrasive wire sawing for multi strands wire

Wang Jinsheng,Yao Chunyan,Peng Wei,Jin Xin,Chen Shijie

Strategic Study of CAE 2012, Volume 14, Issue 11,   Pages 94-98

Abstract: speed and remove the workpiece material in the free brasive wire sawing.Multi-strands wire is made by metal wires and has many grooves in the surface compared with steel wireIn this paper, optical glass K9 were cut by multi strands wire (0.25 mm) and steel wire (0.25 mm).Theresults show that multi strands wire is better than steel wire in slicing efficiency and surface roughness, but the kerf loss is wider than steel wire under the same process conditions.

Keywords： ire saw     free abrasive machining     slicing efficiency    

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evaluation methodology for masonry building and retrofitting using splint and bandage technique with wire

Pravin Kumar Venkat Rao PADALU; Yogendra SINGH

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 478-505 doi: 10.1007/s11709-022-0817-1

Abstract: by providing vertical and horizontal belts called splints and bandages, respectively, using welded wire

Keywords： and out-of-plane forces     pier analysis     finite element modelling     splint and bandage technique with wire    

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Title Author Date Type Operation

Preconcentration of trace elements by adsorption onto a niobium wire for electrothermal atomization atomic

Satoshi KANECO, Hiroaki KITANAGA, Hideyuki KATSUMATA, Tohru SUZUKI

Journal Article

Evaluation of global niobium flow modeling and its market forecasting

Journal Article

Elevated temperature creep model of parallel wire strands

Journal Article

Progress of Tantalum & Niobium Industry in China

He Jilin

Journal Article

Numerical studies of dynamic behavior of liquid film on single-layer wire mesh with different wettabilities

Journal Article

Adsorption of herring sperm DNA onto pine sawdust biochar: Thermodynamics and site energy distribution

Journal Article

Grafting of PEG400 onto the surface of LLDPE/SMA film

CHEN Gufeng, ZHANG Yi, XU Jiarui, ZHU Yafei

Journal Article

Experimental study on wire breakage detection by acoustic emission

Limin SUN, Ji QIAN

Journal Article

A ternary mechanism for the facilitated transfer of metal ions onto metal–organic frameworks: implications

Journal Article

Adsorptive behaviors of humic acid onto freshly prepared hydrous manganese dioxides

LIU Ruiping, LI Guibai, YANG Yanling, HE Wenjie, HAN Hongda

Journal Article

Response of bioaerosol cells to photocatalytic inactivation with ZnO and TiO impregnated onto Perlite

Journal Article

Numerical study of droplet dynamics impinging onto steel plate covered with scale layer

Jan BOHá?EK, Ale? HORáK

Journal Article

Effects of phosphorus concentration on Cr(VI) sorption onto phosphorus-rich sludge biochar

DING Wenchuan,PENG Wenlong,ZENG Xiaolan,TIAN Xiumei

Journal Article

Experimental study of free abrasive wire sawing for multi strands wire

Wang Jinsheng,Yao Chunyan,Peng Wei,Jin Xin,Chen Shijie

Journal Article

evaluation methodology for masonry building and retrofitting using splint and bandage technique with wire

Pravin Kumar Venkat Rao PADALU; Yogendra SINGH

Journal Article