核桃壳吸附水中总铁的特性研究  

Adsorption of Fe in Water by Walnut Shell

作　　者：熊伟[1] 夏娟[2] 何敏[1] 高杨[1] 邓建英[1] 严雪瑞[1] 

机构地区：[1]昆明理工大学津桥学院,云南昆明650000 [2]四川省建筑设计研究院,四川成都610000

出　　处：《广东化工》2015年第14期268-269,共2页Guangdong Chemical Industry

摘　　要：采用废弃核桃壳作为吸附剂处理水中的总铁,研究核桃壳投加量、吸附时间、溶液初始pH对总铁去除率的影响。结果表明,最佳投加量为50 g/L,最佳吸附时间为180 min;溶液初始pH为7-9时去除率可达80%以上。Freundlich吸附等温线模型与实验数据的符合程度要比其他的等温模型更好,这表明发生的是物理吸附。Using waste walnut shell as an adsorbent to deal with the total iron in the water, the recycle of walnut shell as wastes in the wastewater treatment is estimated. The effects of factors, including walnut shell ratio, sorption time, and pH value on the sorption of Fe onto walnut shell removal rate. The results show that the optimal ratio of soil（g） to water（L） is 50∶1. And the optimal sorption time is 180 min. Above 80 % of Fe is sorbed onto walnut shell, when pH value is between 7 and 9. In addition, the sorption of Fe onto walnut shell fits better with Freundlich equation with higher R2 value. It suggests that is physical adsorption.

关 键 词：吸附 核桃壳 总铁 

分 类 号：TQ028.8[化学工程]