废水中苯酚的铁-累托石复合材料-电化学处理方法

Removal of phenol in wastewater by iron-rectorite composite electrochemical method

目的研究累托石和铁-累托石复合材料对模拟苯酚废水的吸附和电催化降解效果。方法分别将累托石和铁-累托石复合材料投加至模拟苯酚废水中,进行单纯吸附试验和电催化试验。结果在单纯吸附试验中,随着时间的延长,累托石、铁-累托石复合材料对模拟废水中苯酚的降解率均先呈升高的趋势,且在40 min时降解率达到最大值,分别为16.34%,16.97%;随着时间的继续延长,二者对模拟废水中苯酚的降解率均略有下降。在电催化试验中,随着时间的延长,累托石、铁-累托石复合材料对模拟废水中苯酚的降解率均呈逐渐升高的趋势,且在试验末(60 min)降解率达到最大值,分别为36.02%,39.85%,均远高于单纯吸附试验时的降解率。铁-累托石复合材料对模拟苯酚废水的降解率均略高于累托石。结论铁-累托石复合材料的电化学处理方法对模拟苯酚废水有较好的去除效果。

Objective To study the effects of adsorption and catalytic degradation of phenol wastewater treated with rectorite and iron-rectorite composite. Methods Rectorite and iron-rectorite composite were respectively added into the simulated phenol wastewater and the simple adsorption and electro-catalytic tests were respectively conducted. Results In adsorption test, for rectorite and iron-rectorite composite, the degradation rates of phenol in wastewater could reach the maximum after 40 minutes, 16.97% and 16.34% respectively,and then declined slightly. In electro-catalytic tests, for rectorite and iron-rcctorite composite, the degradation rates of phenol in wastewater could reach the maximum at the end of the test（60 minutes）, 39.85% and 36.02% respectively. The degradation rate of phenol treated by iron-rectorite composite was slightly higher compared with rectorite. Conclusion The iron-rectorite composite electrochemical treatment has a better efficiency in removal of phenol in wastewater.