有机改性膨润土负载羟基氧化铁处理含铬（VI）废水

摘要

The organic modification bentonite loaded with the ferric hydroxide can be made through using the organic bentonite with the good absorptive property as the carrier, and the adsorption experiment of waste water with chromium (Ⅵ) is carried out by the modified composite adsorbent obtained. The results indicate that the removal efficiency of waste water with Cr(Ⅵ) is good when the mass fraction of modification bentonite is 3%. The removal ratio of waste water with 10 mg/L Cr(Ⅵ) can reach 98.37% under the following conditions: the dosage of composite adsorbent is 1.0 g; the temperature is 25℃ and the oscillating time is 4 hours.%以具有良好吸附性能的有机膨润土作为载体制备有机改性膨润土负载羟基氧化铁,并用制备的复合吸附剂对含铬(VI)废水进行吸附实验。结果表明,改性膨润土的质量分数为3％时,Cr(Ⅵ)废水去除效果较好。当复合吸附剂的投加量为1.0g,温度为25℃,振荡时间为4h时,对含10mg/L的Cr(Ⅵ)废水去除率达98.37%。