摘要
在氧化剂(H2O2)的协同作用下,电气石对雅格素蓝BF-BR染料废水具有良好的脱色能力,脱色率与电气石用量、氧化剂用量、水浴温度、作用时间呈正相关性,溶液pH值为2和12时,脱色率最大。正交实验优化了工艺条件:氧化剂用量1.5 mL、作用时间9 min、电气石用量1 g、水浴温度363 K、pH=2,此时脱色率可达到100%。动力学研究表明:雅格素蓝BF-BR染料废水的脱色反应为一级反应,其反应表观动力学方程为:-lnCR=0.36733t-lnC0(R=0.9827),反应速率常数为k=0.36733 min-1,反应半衰期为t1/2=1.887 min。机理的初步分析表明:脱色过程是矿物催化-类芬顿反应。
Cooperating with oxidation （H202 ）, tourmaline can efficiently make the argazol blue BF-BR dyeing wastewater decolored. The decoloration rate of argazol blue BF-BR increases, with tourmaline dosage, oxidation＂ dosage, temperature and contact time increasing. At pH = 2 and 12, decoloration rate reaches maximum. Through orthogonal experiments, the optimum condition can be concluded that oxidation dosage is 1.5 mL, contact time is 9 rain, tourmaline dosage is 1 g, temperature is 363 K and solution pH is 2. Under the optimum condition, the decoloration ratio can come up to 100%. Kinetic research indicates that the decoloration reaction of argazol blue BF-BR accords to one order kinetic reaction, and the kinetic equation can be described as follows：-lnCR=0.36733t-lnC0（R=0.9827） , with reaction rate constant k = 0. 36733 min^ -1 and half life t1/2 = 1. 887 min. Mechanism analysis shows that mineral-catalyzed Fenton-like reaction results in the decoloration of argazol blue BF-BR dyeing wastewater.
出处
《环境工程学报》
CAS
CSCD
北大核心
2007年第4期65-69,共5页
Chinese Journal of Environmental Engineering
