稀土修饰铁碳材料对糖蜜酒精废水处理效果的研究

Study on the treatment of molasses alcohol wastewater by rare earth modified iron-carbon material

采用还原铁粉、碳粉、稀土铈及黏结剂等为原料混合制成的Ce-Fe/C复合材料深度处理糖蜜酒精废水,研究了铁碳质量比、稀土铈添加量以及废水处理时间等因素对处理效果的影响。结果表明:以铁碳质量比为5∶1,稀土铈添加质量分数为7%制备的Ce-Fe/C复合材料处理糖蜜酒精废水,当反应时间为150 min时,色度去除率达98%以上,COD去除率达70%以上。对制备的复合材料的表征结果表明,稀土元素Ce有效地掺杂到Fe/C材料的晶格中,提高了Fe/C材料的性能。

The Ce-Fe/C composites prepared by mixing reduced iron powder,carbon powder,rare earth cerium and binder were used to deeply treat the molasses alcohol wastewater.The iron-carbon mass ratio,the amount of rare earth cerium added and the treatment time of wastewater on the treatment effect were studied,respectively.The results showed that when the Ce-Fe/C composite prepared with the mass ratio of iron to carbon of 5∶1 and the rare earth cerium addition of 7%was used to treat the molasses alcohol wastewater,the chroma removal rate was over 98%,and the COD removal rate was over 70%for the reaction time of 150 min.The characterization results of the prepared composites showed that the rare earth element Ce was effectively doped into the lattice of the Fe/C material,which improved the performance of the Fe/C material.