Abstract:This study applies a concept Microbial Fuel Cells (MFCs) in a biological cathodic protection (CP) system. The biological CP uses the microbial properties of living microorganisms which are able to produce electrons and suffice the requirement for CP in corrosion prevention system. The electrons produce by the bacteria will be diffuse and transfer to the surface area of graphite which is use as anode. The objective of MFCs for CP is to achieve an optimum value of electro potential produce by bacteria inoculated… Show more
“…In addition, odor Diffuse can endanger the health of the human body and affect the development of green cities; 3) Affecting groundwater sources. At this stage, due to the complexity of the composition of urban domestic sewage, various chemical substances may be mixed together to produce some chemical reactions, which may cause some toxic substances, if not treated in time (Durney et al, 1988;Suhaili and Samsudin, 2018). It will cause toxic substances to enter the groundwater and urban residents' water, causing residents to poison, directly threatening the life and health and personal safety of urban residents.…”
The interactions between electromagnetic field and the biological system can lead to the change of biological morphology, structure, function and other aspects at the different levels of biological targets. The domestic sewage is secondarily disinfected using continuous electromagnetic waves, the microscopic molecules have a certain dipole-moment and the biological molecular aggregates with dielectric properties of the cell may generate dielectric loss under the effect of the applied electromagnetic field. The thermal effect will be produced by putting the microwave energy into the heat of irregular movement which increases biological system's temperature. Under the influence of an applied electromagnetic field, the membrane potentially undergoes conformational changes that would affect K + ion, Na + ion channels open and make the voltage-dependant Ca 2+ ion open, the high concentration of Ca 2+ ion of the membrane into the cell along the potential gradient, which leads to cell death, resulting in the biological non-thermal effects, the greater the changes of cellular transmembrane voltage, the higher the rate of cell death. The experiment results show that the microwave secondary sterilization has a good sterilizing effect, the method has the advantages of high efficiency, low cost, simple operation, easy automation, without adding any substance and does not produce any secondary pollution, etc.
“…In addition, odor Diffuse can endanger the health of the human body and affect the development of green cities; 3) Affecting groundwater sources. At this stage, due to the complexity of the composition of urban domestic sewage, various chemical substances may be mixed together to produce some chemical reactions, which may cause some toxic substances, if not treated in time (Durney et al, 1988;Suhaili and Samsudin, 2018). It will cause toxic substances to enter the groundwater and urban residents' water, causing residents to poison, directly threatening the life and health and personal safety of urban residents.…”
The interactions between electromagnetic field and the biological system can lead to the change of biological morphology, structure, function and other aspects at the different levels of biological targets. The domestic sewage is secondarily disinfected using continuous electromagnetic waves, the microscopic molecules have a certain dipole-moment and the biological molecular aggregates with dielectric properties of the cell may generate dielectric loss under the effect of the applied electromagnetic field. The thermal effect will be produced by putting the microwave energy into the heat of irregular movement which increases biological system's temperature. Under the influence of an applied electromagnetic field, the membrane potentially undergoes conformational changes that would affect K + ion, Na + ion channels open and make the voltage-dependant Ca 2+ ion open, the high concentration of Ca 2+ ion of the membrane into the cell along the potential gradient, which leads to cell death, resulting in the biological non-thermal effects, the greater the changes of cellular transmembrane voltage, the higher the rate of cell death. The experiment results show that the microwave secondary sterilization has a good sterilizing effect, the method has the advantages of high efficiency, low cost, simple operation, easy automation, without adding any substance and does not produce any secondary pollution, etc.
“…The evaluation on the value of ecosystem's service under each type of wetland is conducive to more direct identification of the leading services and ecological value of the wetland ecosystem. The direct monetary value highlights the importance of wetland to regional economic development (Kong et al, 2015), (Suhaili and Samsudin, 2018), (Sajil Kumar, 2020), (Swodesh and Yuvraj, 2020), (Humaira and Saima, 2018).…”
<p>The evaluation of wetland ecosystem service lays the foundation to the wetland protection and exploitation. Evaluating the ecological service of all types of wetlands scientifically and reasonably is critical to improving the quality of ecological environment and securing the regional ecological security. In the middle reaches of the Yellow River, a typical sediment-laden river wetland- Sanmenxia Reservoir area Wetland, is chosen as the research target. Based on the systematic analysis its unique formation process and ecological services, the biological resources are formed, including the value of supply service, regulation service, support service, and cultural service. The value of wetland ecological services was calculated by market value, opportunity cost, shadow engineering and substitution cost methods. The results show that the total value of wetland ecosystem service is worth about 80.86 billion yuan, and the dominant ecological services are regulation service and support service with the economic value of 46.49% and 50.85% respectively. The evaluation results make people more directly understand the importance of wetland leading ecological service and provide scientific basis for the protection and management of wetland in Sanmenxia Reservoir area.</p>
“…In this paper, the impact of rural human capital on agricultural non-point source pollution is discussed from the perspective of spatial spillover, in order to provide a reference for the government to alleviate agricultural non-point source pollution (Suhaili et al, 2018;Sajil et al, 2020;Swodesh et al, 2020;Humaira et al, 2018).…”
<p>With the increasingly prominent problem of agricultural non-point source pollution, the process of Rural Revitalization Strategy has been seriously affected. Studying the relationship between rural human capital and agricultural non-point source pollution is helpful to form talent bonus, improve rural ecological environment and realize the green development of agriculture. This paper takes 30 provinces and cities of China as the research object and uses Spatial Durbin model for empirical analysis. According to the research results, it is found that agricultural non-point source pollution has significant spatial correlation and the correlation presents a fluctuating trend; Rural human capital has obvious direct effect (-0.678) and spatial spillover effect (-0.707), which helps to alleviate agricultural non-point source pollution. After considering different forms of space matrix, the result is considered to be robust. The conclusion of this paper provides policy enlightenment for promoting the construction of rural human capital and improving the continuous development of rural ecological environment curriculum.</p>
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