以硅藻土为原料,利用铁尾矿的酸浸液对其进行改性,制备了改性硅藻土,利用XRD、XRF对改性硅藻土进行了表征,并研究了改性硅藻土对废水中磷的吸附行为。结果表明,改性硅藻土的物相组成、化学组成及含量均发生了改变;改性硅藻土对磷的吸附效果好于硅藻土原土;20 min为吸附平衡时间;对于50 m L 5mg/L的含磷废水,改性硅藻土投加量1.2 g,磷去除率可达81.08%;酸性环境有利于磷的吸附;温度对改性硅藻土吸附磷影响较小;改性硅藻土对磷的吸附行为较符合Freundlich吸附等温式,且为优惠吸附。
【英文摘要】
The modified diatomite was prepared by diatomite and iron tailings acid dipping solution and were characterized by XRD and XRF. The adsorption behaviour of phosphorus on modified diatomite has also been studied. The results show that: the phase composition,chemical composition and cotent are all different; the adsorption effect of modified diatomite is better than that of diatomite; the adsorption equilibrium time is 20 min; for 50 m L 5 mg/L phosphorus wastewater,adding 1. 2 g modified diatomite,the phosph...
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