The importance of simultaneous coal and methane extraction and its significance on green exploitation is stated, and current research situation of simultaneous coal and methane and faced new problems are introduced. T...The importance of simultaneous coal and methane extraction and its significance on green exploitation is stated, and current research situation of simultaneous coal and methane and faced new problems are introduced. The research progress on movement of overlying strata and stresses change in them, cracks development during mining in overlying strata and meth- ane emission under disturbance of mining as well as the changing rules of permeability and methane flow under the disturbance of mining is analyzed. The progress on practice of simultaneous coal and methane extraction is analyzed. The deficiencies of current research and further researching fields on simultaneous coal and methane extraction are pointed out.展开更多
The adsorptive behavior of nanometer attapulgite modified by acid to Pb（Ⅱ） was investigated by flame atomic absorption spectrometry （FAAS） in this paper. The mainly effect parameters ott the adsorptive efficiency...The adsorptive behavior of nanometer attapulgite modified by acid to Pb（Ⅱ） was investigated by flame atomic absorption spectrometry （FAAS） in this paper. The mainly effect parameters ott the adsorptive efficiency of Pb（Ⅱ）, such as the acidity of the solution, the amount of attapulgite, oscillation time and static time were studied. Also the influencing factors of the recovery efficiency of Pb（Ⅱ）, including the concentration of hydrochloric acid, the volume of hydrochloric acid, oscillation time and static time were investigated. The adsorptive capacity of Pb（Ⅱ） on nanometer attapulgite was 26.5mg/g and the adsorptive capacity of first cycle and second cycle regenerated nanometer attapulgite were 26.5mg/g and 26.3mg/g, respectively. The results obtained indicated that the regenerated effect was good.展开更多
The green development is the latest economic and social development philosophy that is proposed to cope with the gradual deterioration of current ecological environment, and it aims to achieve the comprehensive greeni...The green development is the latest economic and social development philosophy that is proposed to cope with the gradual deterioration of current ecological environment, and it aims to achieve the comprehensive greenization of the economy and the society. To promote the green development of the economy and the society, we must look far and aim high, and we must take a holistic approach, coordinate the strategic measures in the fields of the economy, the politics, the culture, the society, the natural environment, and international cooperation, as well as emphasize the logic, the connection, and the hierarchy of different systems, then establish a synergetic mechanism of the green development so that various measures will be coordinated and brought forward to maximize the effect in the joint effort of promoting the green transformation of the economy and the society.展开更多
基金Supported by the National Science Foundation of China （51304006） the Key Project of Anhui Provincial Department of Education （KJ2011A075） the Youth Backbone Training Funds of Anhui University of Science ＆Technology （20120012）
文摘The importance of simultaneous coal and methane extraction and its significance on green exploitation is stated, and current research situation of simultaneous coal and methane and faced new problems are introduced. The research progress on movement of overlying strata and stresses change in them, cracks development during mining in overlying strata and meth- ane emission under disturbance of mining as well as the changing rules of permeability and methane flow under the disturbance of mining is analyzed. The progress on practice of simultaneous coal and methane extraction is analyzed. The deficiencies of current research and further researching fields on simultaneous coal and methane extraction are pointed out.
文摘The adsorptive behavior of nanometer attapulgite modified by acid to Pb（Ⅱ） was investigated by flame atomic absorption spectrometry （FAAS） in this paper. The mainly effect parameters ott the adsorptive efficiency of Pb（Ⅱ）, such as the acidity of the solution, the amount of attapulgite, oscillation time and static time were studied. Also the influencing factors of the recovery efficiency of Pb（Ⅱ）, including the concentration of hydrochloric acid, the volume of hydrochloric acid, oscillation time and static time were investigated. The adsorptive capacity of Pb（Ⅱ） on nanometer attapulgite was 26.5mg/g and the adsorptive capacity of first cycle and second cycle regenerated nanometer attapulgite were 26.5mg/g and 26.3mg/g, respectively. The results obtained indicated that the regenerated effect was good.
文摘The green development is the latest economic and social development philosophy that is proposed to cope with the gradual deterioration of current ecological environment, and it aims to achieve the comprehensive greenization of the economy and the society. To promote the green development of the economy and the society, we must look far and aim high, and we must take a holistic approach, coordinate the strategic measures in the fields of the economy, the politics, the culture, the society, the natural environment, and international cooperation, as well as emphasize the logic, the connection, and the hierarchy of different systems, then establish a synergetic mechanism of the green development so that various measures will be coordinated and brought forward to maximize the effect in the joint effort of promoting the green transformation of the economy and the society.
