scholarly journals Multi-Phase Equilibrium in Aqueous Solutions of the Triple-Helical Polysaccharide, Schizophyllan

1984 ◽  
Vol 16 (10) ◽  
pp. 779-790 ◽  
Author(s):  
Takashi Itou ◽  
Akio Teramoto
Keyword(s):  
Phase Equilibrium ◽  
Aqueous Solutions ◽  
Multi Phase

Multi-phase equilibrium microemulsions-based routes to synthesize nanoscale BaWO4 spheres, cylinders and rods

2006 ◽  
Vol 274 (1-3) ◽  
pp. 18-23 ◽  
Author(s):  
Dong Li ◽  
Hao Wu ◽  
Zhen Li ◽  
Xiaofei Cong ◽  
Jing Sun ◽  
...  
Keyword(s):  
Phase Equilibrium ◽  
Multi Phase

scholarly journals Phase Equilibrium and Dissociation Enthalpies for Cyclopentane + Methane Hydrates in NaCl Aqueous Solutions†

2010 ◽  
Vol 55 (10) ◽  
pp. 4444-4449 ◽  
Author(s):  
Zhao-Yang Chen ◽  
Qing-Ping Li ◽  
Zhong-Yuan Yan ◽  
Ke-Feng Yan ◽  
Zhi-Yong Zeng ◽  
...  
Keyword(s):  
Phase Equilibrium ◽  
Aqueous Solutions ◽  
Methane Hydrates

scholarly journals Industrial Manufacturing of Aqueous Solutions of Sodium Sulfhydrate (NaHS 43%) in a Multi-Phase Reactor

2019 ◽  
Vol 13 (1) ◽  
pp. 46-67
Author(s):  
Warren Reátegui-Romero ◽  
Fredy Castillejo-Melgarejo ◽  
María E. King-Santos
Keyword(s):  
Hydrogen Sulfide ◽  
Aqueous Solutions ◽  
Environmental Problem ◽  
Sodium Sulfide ◽  
Aqueous Sodium Hydroxide ◽  
Experimental Tests ◽  
Chemical Reactor ◽  
Industrial Manufacturing ◽  
Biphasic Reaction ◽  
Multi Phase

Background: This research deals with the manufacture of sodium sulphides and sodium sulfhydrate in an isothermal multiphase chemical reactor to produce concentrated aqueous solutions of sodium sulfhydrate (greater than 43%) through Gas-Liquid-Solid reactions from hydrogen sulfide and hydroxide of sodium at 50%. Methods: A method is proposed that integrates the recovery of hydrogen sulfide from an industrial chemical process where the H2S gas is generated as a sub product, the strategy of the developed process was integrated into a manufacturing plant of dithiophosphoric acids (ADTF) where it was possible to recover the hydrogen sulfide in the form of an aqueous solution of NaHS with a concentration higher than 43%. Results: The experimental tests showed that the biphasic reaction mixture formed by Na2S, NaHS and H2O with global compositions of 13.3%; 26.9% and 59.7% respectively, is appropriate to obtain 43% sodium sulfhydrate in a stirred tank reactor, operated at temperatures ranging from 50°C to 55°C, where gaseous hydrogen sulfide is continually bubbled. Conclusion: Sodium sulfide (specifically Na2S.5H2O crystals) of the biphasic mixture is produced from a solution of sodium sulfhydrate (43% NaHS) and aqueous sodium hydroxide (50% NaOH). The environmental problem generated by the H2S was solved with a 90% recovery in the multiphase reactor and 5% in the safety absorber.

A review of multi-phase equilibrium studies on biodiesel production with supercritical methanol

RSC Advances ◽  
2014 ◽  
Vol 4 (45) ◽  
pp. 23447-23455 ◽  
Author(s):  
Jie Xu ◽  
Zhao Jiang ◽  
Lu Li ◽  
Tao Fang
Keyword(s):  
Phase Equilibrium ◽  
Biodiesel Production ◽  
Basic Data ◽  
Supercritical Methanol ◽  
Thermodynamic Models ◽  
Equilibrium Studies ◽  
Research Status ◽  
Multi Phase

(1) In this work, several methods of biodiesel production were discussed and compared. We concluded drawn that biodiesel production with supercritical methanol is the best one. (2) The research status on the multi-phase equilibrium of biodiesel production with supercritical methanol was summarized, including related articles, basic data and thermodynamic models. (3) Several important problems concerning phase equilibrium were put forward.

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