Cu~(2+)/UV/H_2O_2去除水中盐酸四环素及动力学研究

对比了UV、Cu~(2+)/H_2O_2、UV/H_2O_2、Cu~(2+)/UV/H_2O_2体系对盐酸四环素(TC)的降解效果,考察了Cu~(2+)/UV/H_2O_2体系降解TC的影响因素,并进行了动力学分析。实验结果表明:Cu~(2+)的加入明显增强了UV/H_2O_2体系对TC的降解效果,反应60 min时,Cu~(2+)/UV/H_2O_2体系对TC的降解率相比UV/H_2O_2体系提高了24.82%;Cu~(2+)的最佳投加量为120μmol/L;pH对TC的降解影响较小;H_2O_2投加量、温度、紫外灯功率的增加均会增加TC的降解率。Cu~(2+)/UV/H_2O_2体系中TC的降解可用拟二级动力学方程描述,TC降解的活化能为15.56 kJ。

Removal of tetracycline hydrochloride by Cu2+/ UV/ H2O2 system and its kinetics research

The effects of UV,Cu²⁺/H₂O₂,UV/H₂O₂,Cu²⁺/UV/H₂O₂ system on degradation of tetracycline hydrochloride（TC）were compared with each other . The factors affecting TC degradation in Cu²⁺/UV/H₂O₂ system were investigated and the kenetics was analyzed. The experimental results showed that：The TC degradation was enhanced with the addition of Cu²⁺ into UV/H₂O₂ system significantly;After 60 min of reaction,the TC degradation rate of Cu²⁺/UV/H₂O₂ system was 24.82% higher than that of UV/H₂O₂ system;The optimum addition of Cu²⁺ was 120 μmol/L;The pH have little effect on TC degradation;Besides,the TC degradation rate was increased with the increase of H₂O₂ addition,the temperature and the UV light power. The degradation of TC in Cu²⁺/UV/H₂O₂ system conforms to the pseudo second-order kinetics equation,and the activation energy of TC degradation is 15.56 kJ.