不同脉冲放电类型降解偶氮染料的能量传输效率和能量利用率的评价

被引:2
作者
沈拥军
雷乐成
张兴旺
机构
[1] 浙江大学环境污染控制技术研究所
关键词
酸性橙Ⅱ降解; 脉冲放电; 电导率; 放电类型; 能量传输效率; 能量利用率;
D O I
暂无
中图分类号
X791 [纺织、印染工业];
学科分类号
摘要
研究了电导率高低导致的不同高压脉冲放电模式(火花、流注、电晕放电)下降解酸性橙Ⅱ.使用一种新型的由闸流管开关和Blumlein脉冲形成网络构成的电源,测量了不同放电类型下典型的放电波形图(电压、电流、功率、单脉冲能量),拍摄了不同放电模式下的放电图片.结果表明,脉冲放电等离子体能使酸性橙Ⅱ染料废水完全脱色,并且能有效地去除COD.用GC-MS测得了酸性橙Ⅱ降解过程中的中间产物.随着电导率的增加,放电形式由火花放电过渡到流注放电再到电晕放电.在恒定输入功率的情况下,3种放电类型的峰值电压、峰值电流、峰值功率和单脉冲能量的大小顺序是火花放电>流注放电>电晕放电.降解酸性橙染料的能量转移效率,火花放电是57.2%,高于流注放电的40.4%和电晕放电的27.6%.3种放电模式降解酸性橙Ⅱ(火花、流注、电晕放电)的能量利用率分别是1.035×109?,0.646×109?和0.589×109?mol.J1?.火花放电的能量转移效率和能量利用率都是最高的.
引用
收藏
页码:641 / 650
页数:10
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