Microbial Electrolytic Cell(MEC)is an electrochemical reaction device that uses electrical energy as an energy input and microorganisms as catalysts to produce fuels and chemicals.The regenerative electrochemical syst...Microbial Electrolytic Cell(MEC)is an electrochemical reaction device that uses electrical energy as an energy input and microorganisms as catalysts to produce fuels and chemicals.The regenerative electrochemical system is a MEC improvement system for methane gas produced by biological carbon sequestration technology using renewable energy sources to provide a voltage environment.In response to the influence of fluctuating disturbances of renewable electricity and the long system start-up time,this paper analyzes the characteristics of two strategies,regulating voltage parameter changes and activated sludge pretreatment,on the methane production efficiency of the renewable gas electrochemical system.In this system,the methane production rate of regenerative electrochemical system is increased by 1.4 times through intermittent boosting start-up strategy;based on intermittent boosting,the methane production rate of regenerative electrochemical system is increased by 2 times through sludge pyrolysis pretreatment start-up strategy,and the start-up time is reduced to 10 days.Meanwhile,according to the simulation test results of power input fluctuation and intermittency,the stability standard deviation of its system operation is 75%of the original one,and the recovery rate is about 1 times higher.This study can provide a theoretical basis and technical reference for the early industrial application of microbial CO_(2)methanation technology based on renewable energy.展开更多
In recent years, the disparity of Chinese people＇s income has been unsteadily expanding. The reasons lie in many aspects, among which there are mainly income disparity between the rural and the urban and the disparit...In recent years, the disparity of Chinese people＇s income has been unsteadily expanding. The reasons lie in many aspects, among which there are mainly income disparity between the rural and the urban and the disparity between regions, including the disparity between people both in the city and in the countryside. Therefore the corresponding strategies should be put into effect .展开更多
Starting from presenting and analyzing some information gap activities during the previous teaching experience, this article has inferred the major roles of information gap activities. Some strategies to implement the...Starting from presenting and analyzing some information gap activities during the previous teaching experience, this article has inferred the major roles of information gap activities. Some strategies to implement the information gap activities are also recommended together with the functions of the instructors via these activities. What information gap activities can teach us in TESOL （teaching English for speakers of other languages） is that information gap activities contribute to setting up a climate of a mutual autonomous learning style both for the learners and the instructors, and these activities activate a diversity in the learning atmosphere.展开更多
基金Funding Statement:This paper is supported by Shanghai Science and Technology Development Fund,China,No.19DZ1205604.
文摘Microbial Electrolytic Cell(MEC)is an electrochemical reaction device that uses electrical energy as an energy input and microorganisms as catalysts to produce fuels and chemicals.The regenerative electrochemical system is a MEC improvement system for methane gas produced by biological carbon sequestration technology using renewable energy sources to provide a voltage environment.In response to the influence of fluctuating disturbances of renewable electricity and the long system start-up time,this paper analyzes the characteristics of two strategies,regulating voltage parameter changes and activated sludge pretreatment,on the methane production efficiency of the renewable gas electrochemical system.In this system,the methane production rate of regenerative electrochemical system is increased by 1.4 times through intermittent boosting start-up strategy;based on intermittent boosting,the methane production rate of regenerative electrochemical system is increased by 2 times through sludge pyrolysis pretreatment start-up strategy,and the start-up time is reduced to 10 days.Meanwhile,according to the simulation test results of power input fluctuation and intermittency,the stability standard deviation of its system operation is 75%of the original one,and the recovery rate is about 1 times higher.This study can provide a theoretical basis and technical reference for the early industrial application of microbial CO_(2)methanation technology based on renewable energy.
文摘In recent years, the disparity of Chinese people＇s income has been unsteadily expanding. The reasons lie in many aspects, among which there are mainly income disparity between the rural and the urban and the disparity between regions, including the disparity between people both in the city and in the countryside. Therefore the corresponding strategies should be put into effect .
文摘Starting from presenting and analyzing some information gap activities during the previous teaching experience, this article has inferred the major roles of information gap activities. Some strategies to implement the information gap activities are also recommended together with the functions of the instructors via these activities. What information gap activities can teach us in TESOL （teaching English for speakers of other languages） is that information gap activities contribute to setting up a climate of a mutual autonomous learning style both for the learners and the instructors, and these activities activate a diversity in the learning atmosphere.
