No abstract

Hydrogen is a kind of energy source with a characteristic of high calorific value and plasma is regarded as a good method of hydrogen production. Hydrogen produced from ethanol reforming using micro plasma can be utilized for portable applications. The study introduces water/carbon ratio, residence time, and ethanol mass flow rate as the parameters of experimental conditions, and makes ethanol conversion, gas production rate, gas product selectivity, energy consumption, and efficiency of hydrogen production per unit as the evaluation parameters of ethanol reforming reaction. The experimental results showed that (1) in the argon micro plasma: the maximum ethanol conversion of 25.3% was obtained at residence time = 2.1 ms, ethanol mass flow rate = 0.01 g/s and S/C = 1.0, and the peak value of hydrogen production of 18.7 μmol/s was achieved at residence time = 2.1 ms, ethanol mass flow rate = 0.05 g/s and S/C = 1.0; (2) in the air micro plasma: the maximum ethanol conversion of 37.4% was obtained at residence time = 2.1 ms, ethanol mass flow rate = 0.01 g/s and S/C = 1.0, and the peak value of hydrogen production of 36.8 μmol/s was achieved at residence time = 2.1 ms, ethanol mass flow rate = 0.03 g/s and S/C = 3.0. These experimental results showed that the microreactor can substantially reduce the volume of the device while producing a large amount of output.

No abstract

Plasma gas injection as one of the non-thermal plasma (NTP) technologies has a free-standing gas-phase plasma reactor outside the polluted target and can efficiently degrade contaminants by injecting plasma gas containing a large number of reactive species. This approach has been utilized in various fields of pollutants treatment, because of its structural advantage of indirect contact between pollutants and electrodes and its ability to produce strong oxidizing species. This article first expounds on the principle of the plasma gas injection and then progresses to a discussion of its application for pollutants degradation, mainly focusing on the treatment effect and degradation mechanisms. It is believed that plasma gas injection is considered to be a very practical, clean, efficient, and environmentally friendly method for pollution control.

No abstract