尖晶石铁氧体纳米颗粒物催化降解苯酚磺酸废水的效果

Effect of Spinel Ferrite Nanoparticles on Catalytic Degradation of Phenolsulfonic Acid Wastewater Treatment

苯酚磺酸(PSA)是冷轧镀锡工艺中酸性电镀液最主要的添加剂,在工艺生产中会伴随产生大量的PSA废水。文中采用“过一硫酸盐(PMS)/尖晶石铁氧体”的非均相催化体系降解水体中的PSA。研究采用水热反应法制得尖晶石铁氧体,运用X射线衍射仪、傅里叶变换红外光谱仪、比表面积与孔隙度分析仪对其进行表征,并系统研究了PMS投加量、催化剂用量、初始p H等因素的影响。研究结果表明,温度为25℃、PMS的投加量为3.0 g/L、催化剂的剂量为0.20 g/L、废水初始pH值为2.5~2.9、接触反应时间为90 min时,PSA去除率可达到87%。经数次重复利用后,催化剂仍保持着较高的催化活性。

Phenol sulfonic acid(PSA)is the main additive of acid electroplating solution in cold rolling plating process,which may produce a large amount of PSA wastewater in the process.It was proposed to use the non-homogeneous catalytic system of"peroxy monosulfate(PMS)/spinel ferrite"to degrade PSA in wastewater,a spinel ferrite was obtained by hydrothermal reaction method,and it was characterized by X-ray diffractometer,Fourier transform infrared spectrometer,specific surface area and porosity analyzer.The effect of PMS dosages,catalyst dosages,initial p H values of wastewater and other factors on the PSA removal efficiency of degradation system were studied,and the optimal conditions were obtained with pH value=2.5~2.9(unadjusted),catalyst dosage of 0.20 g/L,PMS concentration of 3.0 g/L,contact reaction time of 90 min,temperature of 25℃,the removal efficiency of PSA could be up to 87%.While the catalyst still maintains a high catalytic activity after several times of reutilization.