摘要
利用针-板式气液两相低温等离子体对蒽醌类染料中间体溴氨酸(BAA)模拟废水进行处理。结果表明,低温等离子体对溴BAA的降解符合准一级反应动力学。初始BAA的质量浓度分别为20、40、100 mg/L时,BAA的去除率分别为95.40%、90.86%、82.82%,反应速率常数分别为0.050 4、0.038 0、0.028 0 min^(-1)。酸性条件和增加氧气流量有利于脱色反应进行。活性尾气的利用可以显著提高BAA处理效率,反应动力学常数从0.038 0 min^(-1)提高到0.0497 min^(-1)。单环芳香族化合物或者酚类化合物的中间产物,与母体相比生物毒性显著增加。
Needle-plate gas-liquid two-phase non-thermal plasma(NTP) was used to degrade the intermediate of anthraquinone dyes of bromoamine acid(BAA). The results showed that the degradation of BAA by gas-liquid discharge plasma was in accordance with the pseudo-first-order kinetic model. When the initial mass concentration of BAA was 20, 40, and 100 mg/L, the degradation rate was 95.40%, 90.86%, and 82.82% respectively,and the reaction rate constants were 0.050 4, 0.038 0, and 0.028 0 min^(-1)respectively. Increasing oxygen flow rate and acidic conditions could accelerate the decolorization rates of BAA. After adding the aeration device, the reaction kinetic constant was increased from 0.038 0 min^(-1)to 0.049 7 min^(-1).A possible pathway for BAA degradation was proposed by monitoring the intermediates in the solution. The intermediate products of monocyclic aromatic compounds or phenolic compounds have significantly more biotoxic compared to the parent compound.
作者
马可可
辛怡颖
周律
任滋禾
白昱
周岳溪
MA Keke;XIN Yiying;ZHOU Lü;REN Zihe;BAI Yu;ZHOU Yuexi(School of Environment,Tsinghua University,100084;Research Center of Water Pollution Control Technology,Chinese Research Academy of Environmental Sciences,100012,Beijing China)
出处
《水处理技术》
CAS
CSCD
北大核心
2022年第1期44-48,共5页
Technology of Water Treatment
基金
国家自然科学基金(51578309)。
关键词
溴氨酸
降解
等温等离子体
动力学
毒性评估
bromoamine acid
degradation mechanism
non-thermal plasma
kinetics
toxicity evaluation
