The theoretical simulation and verified experiments on metal separation in a Sb^3＋-OH^--Cl^-complexation-precipitation system involving hydrolysis-precipitation reactions of SbOCl, Sb4O5Cl2and Sb2O3were carried out. ...The theoretical simulation and verified experiments on metal separation in a Sb^3＋-OH^--Cl^-complexation-precipitation system involving hydrolysis-precipitation reactions of SbOCl, Sb4O5Cl2and Sb2O3were carried out. The equilibrium concentration of [Sb^3＋]Twas obtained by calculation and verified by experiments. The precipitates SbOCl,Sb4O5Cl2and Sb2O3were analyzed through the equilibrium concentration of Sb^3＋in the solution and the ΔrGΘmof transformation reactions of these materials. It is found that the concentration of [Sb^3＋]Tin verified experiments was larger than the theoretical value, where the theoretical minimum concentration of [Sb^3＋]Twas 10^-10.92mol/L at pH value of 4.6 and the minimum concentration obtained from the verified experiment was about 10^-3.8mol/L at pH value of 5.1. Different precipitates can be obtained atcertain pH. The SbOCl cannot be obtained both in theoretic calculations and in verified experiments, while the Sb8O11Cl2-H2O was generated in the experiment.展开更多
In this work we show that tending to thermal equilibrium in one system, at least in certain cases, is associated with the coherent dynamical evolution of this system in interaction with another identical system. The t...In this work we show that tending to thermal equilibrium in one system, at least in certain cases, is associated with the coherent dynamical evolution of this system in interaction with another identical system. The temperature varying effect with time is manifestly shown in our analyses.展开更多
This paper presents various substrate treatment methods used to increase biogas production. These methods-mechanical disintegration, thermal hydrolysis and ultrasonic disintegration-are compared from the point of view...This paper presents various substrate treatment methods used to increase biogas production. These methods-mechanical disintegration, thermal hydrolysis and ultrasonic disintegration-are compared from the point of view of energy. This comparison requires knowledge of mass and heat balances. The data needed for evaluating of all processes has been obtained from our previous research and also from our own experiments, especially for the case of ultrasonic disintegration.展开更多
基金Project(51474257)supported by the National Natural Science Foundation of China
文摘The theoretical simulation and verified experiments on metal separation in a Sb^3＋-OH^--Cl^-complexation-precipitation system involving hydrolysis-precipitation reactions of SbOCl, Sb4O5Cl2and Sb2O3were carried out. The equilibrium concentration of [Sb^3＋]Twas obtained by calculation and verified by experiments. The precipitates SbOCl,Sb4O5Cl2and Sb2O3were analyzed through the equilibrium concentration of Sb^3＋in the solution and the ΔrGΘmof transformation reactions of these materials. It is found that the concentration of [Sb^3＋]Tin verified experiments was larger than the theoretical value, where the theoretical minimum concentration of [Sb^3＋]Twas 10^-10.92mol/L at pH value of 4.6 and the minimum concentration obtained from the verified experiment was about 10^-3.8mol/L at pH value of 5.1. Different precipitates can be obtained atcertain pH. The SbOCl cannot be obtained both in theoretic calculations and in verified experiments, while the Sb8O11Cl2-H2O was generated in the experiment.
基金National Natural Science Foundation of China under Grant No.10775097the Specialized Research Fund for the Doctorial Progress of Higher Education(SRFDP)
文摘In this work we show that tending to thermal equilibrium in one system, at least in certain cases, is associated with the coherent dynamical evolution of this system in interaction with another identical system. The temperature varying effect with time is manifestly shown in our analyses.
文摘This paper presents various substrate treatment methods used to increase biogas production. These methods-mechanical disintegration, thermal hydrolysis and ultrasonic disintegration-are compared from the point of view of energy. This comparison requires knowledge of mass and heat balances. The data needed for evaluating of all processes has been obtained from our previous research and also from our own experiments, especially for the case of ultrasonic disintegration.
