The environmental contamination caused by antibiotics is increasingly conspicuous due to their widespread manufacture and misuse. Plasma has been employed in recent years for the remediation of antibiotic pollution in...The environmental contamination caused by antibiotics is increasingly conspicuous due to their widespread manufacture and misuse. Plasma has been employed in recent years for the remediation of antibiotic pollution in the environment. In this work, a falling-film dielectric barrier discharge was used to degrade the antibiotic tetracycline(TC) in water. The reactor combined the gas-liquid discharge and active gas bubbling to improve the TC degradation performance. The discharge characteristics, chemical species’ concentration, and degradation rates at different parameters were systematically studied. Under the optimized conditions(working gas was pure oxygen, liquid flow rate was 100 mL/min, gas flow rate was 1 L/min,voltage was 20 kV, single treatment), TC was removed beyond 70% in a single flow treatment with an energy efficiency of 145 mg/(kW·h). The reactor design facilitated gas and liquid flow in the plasma area to produce more ozone in bubbles after a single flow under pure oxygen conditions, affording fast TC degradation. Furthermore, long-term stationary experiment indicated that long-lived active species can sustain the degradation of TC. Compared with other plasma treatment systems, this work offers a fast and efficient degradation method, showing significant potential in practical industrial applications.展开更多
为提升学员在全球海上遇险与安全系统(GMDSS)课程中的学习效率,提出基于SpringBoot+Vue前后端分离模式的具备高仿真度、强交互性GMDSS VHF(Very High Frequency)设备虚拟仿真教学平台。结合完善的功能需求分析,采用Maxon Cinema4D构建3...为提升学员在全球海上遇险与安全系统(GMDSS)课程中的学习效率,提出基于SpringBoot+Vue前后端分离模式的具备高仿真度、强交互性GMDSS VHF(Very High Frequency)设备虚拟仿真教学平台。结合完善的功能需求分析,采用Maxon Cinema4D构建3D模拟模型,分别搭建前、后端框架,并建立前后端通信,利用WebRTC模拟VHF设备的通信功能。通过实践检验,该模拟器可满足GMDSS实操的教学要求,突破时空限制,为学员提供一个能够进行海上遇险报警模拟通信、VHF通信设备模拟操作的可靠、稳定、灵活的仿真平台。展开更多
基金supported by the National Science Fund for Distinguished Young Scholars(No.51925703)National Natural Science Foundation of China(Nos.52022096 and 52261145695)。
文摘The environmental contamination caused by antibiotics is increasingly conspicuous due to their widespread manufacture and misuse. Plasma has been employed in recent years for the remediation of antibiotic pollution in the environment. In this work, a falling-film dielectric barrier discharge was used to degrade the antibiotic tetracycline(TC) in water. The reactor combined the gas-liquid discharge and active gas bubbling to improve the TC degradation performance. The discharge characteristics, chemical species’ concentration, and degradation rates at different parameters were systematically studied. Under the optimized conditions(working gas was pure oxygen, liquid flow rate was 100 mL/min, gas flow rate was 1 L/min,voltage was 20 kV, single treatment), TC was removed beyond 70% in a single flow treatment with an energy efficiency of 145 mg/(kW·h). The reactor design facilitated gas and liquid flow in the plasma area to produce more ozone in bubbles after a single flow under pure oxygen conditions, affording fast TC degradation. Furthermore, long-term stationary experiment indicated that long-lived active species can sustain the degradation of TC. Compared with other plasma treatment systems, this work offers a fast and efficient degradation method, showing significant potential in practical industrial applications.
文摘为提升学员在全球海上遇险与安全系统(GMDSS)课程中的学习效率,提出基于SpringBoot+Vue前后端分离模式的具备高仿真度、强交互性GMDSS VHF(Very High Frequency)设备虚拟仿真教学平台。结合完善的功能需求分析,采用Maxon Cinema4D构建3D模拟模型,分别搭建前、后端框架,并建立前后端通信,利用WebRTC模拟VHF设备的通信功能。通过实践检验,该模拟器可满足GMDSS实操的教学要求,突破时空限制,为学员提供一个能够进行海上遇险报警模拟通信、VHF通信设备模拟操作的可靠、稳定、灵活的仿真平台。
