Analcime-bearing rocks from Carboniferous and Permian sediments occupy a vast area in the Timan (Komi Republic,Russian Federation)—about 150.000 km^2.Rocks are represented by siltstones and mudstones.The analcime-bea...Analcime-bearing rocks from Carboniferous and Permian sediments occupy a vast area in the Timan (Komi Republic,Russian Federation)—about 150.000 km^2.Rocks are represented by siltstones and mudstones.The analcime-bearing rocks have the following mineral composition(%):clay minerals (50-70),quartz(10-30),analcime(1-30),feldspars (2-10),carbonates(2-5),and pyroclastic material.展开更多
The wastewater produced by the large-scale usage of antibiotics worldwide was more harmful to the ecological environment and human health.In the research,the coupling technology of‘adsorption-plasma regeneration'...The wastewater produced by the large-scale usage of antibiotics worldwide was more harmful to the ecological environment and human health.In the research,the coupling technology of‘adsorption-plasma regeneration'was taken to treat tetracycline in aqueous solution.The pollutants were adsorbed by the resins firstly and then regenerated ectopically by dielectric barrier discharge plasma.The discharge parameters,such as discharge voltage and frequency were researched to achieve the optimal regeneration efficiency and energy efficiency.Meanwhile,the analyses of the surface functional groups and microstructure were also investigated.After the five‘adsorption-regeneration'processes,the results showed that the optimal discharge parameters of voltage and frequency were 20 k V and 1 k Hz,respectively.The regeneration efficiency and energy efficiency were above 80%and 115 g k W^(-1)·h^(-1),respectively.The tetracycline adsorption by virgin resin and regenerated resin nearly followed pseudo-second order kinetics,and there was no fatal damage to the surface characteristics and physicochemical properties of the resins through the multiple plasma regeneration processes.Finally,according to the intra-particle diffusion model and the degradation products detected by GC-MS,the adsorption and degradation mechanisms of tetracycline were deduced.展开更多
The thermodynamic cycle for an adsorption system is presented inp-T diagram. In order to investigate the performance of the adsorption system, a lumped parameter transient model of the chiller is developed, in order t...The thermodynamic cycle for an adsorption system is presented inp-T diagram. In order to investigate the performance of the adsorption system, a lumped parameter transient model of the chiller is developed, in order to predict the behaviors of the adsorption chiller system and find the influence of working conditions on its operation. For the working process of the main components of the system, including adsorber, condenser and evaporator, the coupled unsteady equations were set up for each stage. The model was then solved using stable numerical methods from EES （equation engineering solver）, and the performance of the adsorber and condenser/evaporator of the system was analyzed. The condensation, evaporation and adsorber temperature values as well as the adsorption ratio and desorption ratio were obtained as function of operating time. Also, the coefficient of performance was analyzed in function of the heat source temperature and the cooling source temperature.展开更多
文摘Analcime-bearing rocks from Carboniferous and Permian sediments occupy a vast area in the Timan (Komi Republic,Russian Federation)—about 150.000 km^2.Rocks are represented by siltstones and mudstones.The analcime-bearing rocks have the following mineral composition(%):clay minerals (50-70),quartz(10-30),analcime(1-30),feldspars (2-10),carbonates(2-5),and pyroclastic material.
基金financed by National Natural Science Foundation of China (No. 51877046)
文摘The wastewater produced by the large-scale usage of antibiotics worldwide was more harmful to the ecological environment and human health.In the research,the coupling technology of‘adsorption-plasma regeneration'was taken to treat tetracycline in aqueous solution.The pollutants were adsorbed by the resins firstly and then regenerated ectopically by dielectric barrier discharge plasma.The discharge parameters,such as discharge voltage and frequency were researched to achieve the optimal regeneration efficiency and energy efficiency.Meanwhile,the analyses of the surface functional groups and microstructure were also investigated.After the five‘adsorption-regeneration'processes,the results showed that the optimal discharge parameters of voltage and frequency were 20 k V and 1 k Hz,respectively.The regeneration efficiency and energy efficiency were above 80%and 115 g k W^(-1)·h^(-1),respectively.The tetracycline adsorption by virgin resin and regenerated resin nearly followed pseudo-second order kinetics,and there was no fatal damage to the surface characteristics and physicochemical properties of the resins through the multiple plasma regeneration processes.Finally,according to the intra-particle diffusion model and the degradation products detected by GC-MS,the adsorption and degradation mechanisms of tetracycline were deduced.
文摘The thermodynamic cycle for an adsorption system is presented inp-T diagram. In order to investigate the performance of the adsorption system, a lumped parameter transient model of the chiller is developed, in order to predict the behaviors of the adsorption chiller system and find the influence of working conditions on its operation. For the working process of the main components of the system, including adsorber, condenser and evaporator, the coupled unsteady equations were set up for each stage. The model was then solved using stable numerical methods from EES （equation engineering solver）, and the performance of the adsorber and condenser/evaporator of the system was analyzed. The condensation, evaporation and adsorber temperature values as well as the adsorption ratio and desorption ratio were obtained as function of operating time. Also, the coefficient of performance was analyzed in function of the heat source temperature and the cooling source temperature.
