Enhanced In Situ Separation of Boron at the Silicon Alloy Solidification Interface through Innovating the Impurity Chemical Reconstruction Approach for SoG-Si

2021 ◽  
Author(s):  
Guoyu Qian ◽  
Lu Zhou ◽  
Shijian Li ◽  
Zhi Wang ◽  
Liyuan Sun
Keyword(s):  
Alloy Solidification ◽  
Silicon Alloy ◽  
Solidification Interface ◽  
In Situ Separation

TiO2/sulfonated graphene oxide/Ag nanoparticle membrane: In situ separation and photodegradation of oil/water emulsions

2018 ◽  
Vol 554 ◽  
pp. 16-25 ◽  
Author(s):  
Dongliang Qian ◽  
Dongyun Chen ◽  
Najun Li ◽  
Qingfeng Xu ◽  
Hua Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ag Nanoparticle ◽  
Sulfonated Graphene ◽  
In Situ Separation ◽  
Oil Water

CO2 Capture Using Calcium Oxide Applicable to In-Situ Separation of CO2 From H2 Production Processes

2013 ◽  
Author(s):  
Saeed Danaei Kenarsari ◽  
Yuan Zheng
Keyword(s):  
Calcium Oxide ◽  
Co2 Capture ◽  
Fixed Bed ◽  
H2 Production ◽  
Fixed Bed Reactor ◽  
Capture Process ◽  
Conversion Rates ◽  
In Situ Separation ◽  
Separation Of Co2

A lab-scale CO2 capture system is designed, fabricated, and tested for performing CO2 capture via carbonation of very fine calcium oxide (CaO) with particle size in micrometers. This system includes a fixed-bed reactor made of stainless steel (12.7 mm in diameter and 76.2 mm long) packed with calcium oxide particles dispersed in sand particles; heated and maintained at a certain temperature (500–550°C) during each experiment. The pressure along the reactor can be kept constant using a back pressure regulator. The conditions of the tests are relevant to separation of CO2 from combustion/gasification flue gases and in-situ CO2 capture process. The inlet flow, 1% CO2 and 99% N2, goes through the reactor at the flow rate of 150 mL/min (at standard conditions). The CO2 percentage of the outlet gas is monitored and recorded by a portable CO2 analyzer. Using the outlet composition, the conversion of calcium oxide is figured and employed to develop the kinetics model. The results indicate that the rates of carbonation reactions considerably increase with raising the temperature from 500°C to 550°C. The conversion rates of CaO-carbonation are well fitted to a shrinking core model which combines chemical reaction controlled and diffusion controlled models.

Enzymatic production and in situ separation of natural β-ionone from β-carotene

2012 ◽  
Vol 39 (12) ◽  
pp. 1771-1778 ◽  
Author(s):  
Christoph Nacke ◽  
Sonja Hüttmann ◽  
Maria M. W. Etschmann ◽  
Jens Schrader
Keyword(s):  
Enzymatic Production ◽  
In Situ Separation ◽  
Β Carotene

A Study on the In-situ Separation of GaN by Using Thermal Decomposition

2013 ◽  
Vol 63 (11) ◽  
pp. 1290-1295
Author(s):  
Sinae KIM ◽  
Sungkuk CHOI ◽  
Jiho CHANG* ◽  
Hyunjae LEE ◽  
Siyoung KIM ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
In Situ Separation

THE SEPARATION OF REMANENT FROM INDUCED MAGNETISM IN SITU

Geophysics ◽  
1966 ◽  
Vol 31 (4) ◽  
pp. 779-796 ◽  
Author(s):  
N. E. Goldstein ◽  
S. H. Ward
Keyword(s):  
Magnetic Anomaly ◽  
Field Experiments ◽  
Magnetic Anomalies ◽  
Static Field ◽  
Observational Evidence ◽  
Field Direction ◽  
Dynamic Field ◽  
In Situ Separation

Remanent and induced magnetism both contribute to static field magnetic anomalies whereas only induced magnetism contributes to dynamic field magnetic anomalies. The theory whereby this phenomenon may be used to advantage for in‐situ separation of remanent from induced magnetism is presented as a prelude to observational evidence confirming the phenomenon. Four field experiments on Western States magnetic anomalies prove that it is possible to predict whether or not a given static field magnetic anomaly is primarily due to remanent or to induced magnetism. The limitations of the method include variability of micropulsation field direction, ellipticity, and intensity.

In-situ radiographic observations of alloy solidification

Metallography ◽  
1972 ◽  
Vol 5 (3) ◽  
pp. 298-300 ◽  
Author(s):  
E.W.J. Miller ◽  
J. Beech
Keyword(s):  
Alloy Solidification

Morphological Features of the Solid-Liquid Interface of a Gallium Film

1991 ◽  
Vol 237 ◽  
Author(s):  
Richard D. Robinson ◽  
Ioannis N. Miaoulis
Keyword(s):  
Preliminary Investigation ◽  
Zone Melting ◽  
Liquid Interface ◽  
Silicon Films ◽  
Processing Conditions ◽  
Scanning Velocity ◽  
Solidification Interface ◽  
Solid Liquid Interface ◽  
Solid Liquid

ABSTRACTThis paper presents a new experimental method to investigate solid-liquid interface morphologies during Zone-Melting-Recrystallization at lower than the typical processing temperatures. Gallium films were used as a substitute for silicon films. In situ preliminary investigation identified three phenomena typically occurring during ZMR of silicon films: a) Transition from planar to dendritic to cellular morphologies was observed for different processing conditions; b) cell period proved to be dependant on scanning velocity; c) instabilities at the solidification interface at low heating strip temperatures were caused by supercooling and optical property variations as the material changed phase.

scholarly journals Ozonation process intensification of p-nitrophenol by in situ separation of hydroxyl radical scavengers and microbubbles

2019 ◽  
Vol 80 (1) ◽  
pp. 25-36 ◽  
Author(s):  
Wen Cheng ◽  
Li Jiang ◽  
Xuejun Quan ◽  
Chen Cheng ◽  
Xiaoxue Huang ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Process Intensification ◽  
Operating Conditions ◽  
Gas Chromatography Mass Spectrometry ◽  
Radical Scavengers ◽  
Operational Parameters ◽  
X Ray Diffraction ◽  
In Situ Separation ◽  
Hydroxyl Radical Scavengers

Abstract The ozonation efficiency for removal of recalcitrant organic pollutants in alkaline wastewater is always low because of the presence of some hydroxyl radical scavengers. To solve this problem, the O3/Ca(OH)2 system was put forward, and p-nitrophenol (PNP) was chosen to explore the mechanism of this system. The effects of key operational parameters were studied respectively; the Ca(OH)2 dosage 3 g/L, ozone inlet flow rate 3.5 L/min, ozone concentration 65 mg/L, reactor pressure 0.25 MPa, and temperature 25 °C were obtained as the optimal operating conditions. After 60 min treatment, the organic matter mineralized completely, which was higher than the sum of the ozonation-alone process (55.63%) and the Ca(OH)2 process (3.53%). It suggests that the calcium hydroxide in the O3/Ca(OH)2 process possessed a paramount role in the removal of PNP. The liquid samples and the precipitated substances were analyzed by gas chromatography mass spectrometry, X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy; it was demonstrated that Ca(OH)2 could accelerate the generation of hydroxyl radical and simultaneously in situ separate partial intermediate products and CO32− ions through some precipitation reactions.

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