Study On Generating ·OH By Atmospheric Strong-field Ionization Electric Discharge Collaborative Miscibility Of Gas And Liquid Method

As the frontiers of today’s international scientific research, Green Chemistry is an interdisciplinary with clear scientific goal and social demand. Advanced oxidation technology comfort to the principle of Green Chemistry, is the most prominent application of Green Chemistry in environment. The developing of advanced oxidation technology is based on promoting ·OH produce efficiency, thus developing a scale and effective generation method of ·OH is research hot-spot and trend at home and abroad.This paper is based on the atmospheric strong-field ionization electric discharge collaborative miscibility of gas and liquid method (SID method) to produce ·OH, and determine the production of ·OH by using HPLC method combined with total organic carbon method. By studying the OH concentration with change of time, prove the existence of ·OH chain reaction. By using H2O2 enzymatic determine generated concentration of H2O2 in reaction, study the production process of H2O2 and impact on ·OH generation by adding H2O2 in reaction process. At the same time, compare SID method with O3、O3+UV、O3+H2O2、O3+UV+H2O2 method from three different angels to prove huge advantage of SID method in ·OH generation and energy efficiency.Experimental research shows that SID method can generate maximum concentration of ·OH which is 98.86 μmol/L. The concentration of 3,4-DHBA in water gradually reduce rapidly in 0～1200 s,in 1200 s the reduce flatten out, this results prove chain reaction exist and exist for 1200 s. By the determination of single discharge and single jet flow produces very small amount of H2O2, under the condition of discharge combine with jet flow generate a large number of H2O2, because of H2O2 is ·OH initiator, thus the generation of H2O2 prompt reaction to generate more ·OH, at the same time, prove that adding H2O2 before reaction can enhance ·OH generation. The compare experiment shows that SID method generate more ·OH than other four method at the top of ozone dissolution time and the energy efficiency under the condition of two time interval said above, production, energy efficiency and COH/COAS ratio. All the results shows that SID method in the field of scale and efficient generate ·OH has long-term application prospect.