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研究了改性方法和改性条件对用于降氟的亚粘土除氟性能的影响,得出了每一种改性方法的最佳改性条件,探讨了改性亚粘土的吸附机理.研究表明,改性亚粘土除氟率高、工作交换容量大,除氟率最高达100%.最大工作交换容量达243.30mg·kg~(-1).改性亚粘土降氟功能归因于所含针铁矿和伊利石对于F~-的专性吸附.
The influence of the modification method and modification conditions on the fluoride removal performance of the sub-clays used in fluorine reduction was studied, and the optimum modification conditions for each modification method were obtained. The adsorption mechanism of the modified clay was also discussed. The results showed that the modified dewatered clay has a high removal rate of fluoride, a large working exchange capacity and a maximum removal rate of 100%, with a maximum exchange capacity of 243.30 mg · kg -1. Adsorption of F ~ - with goethite and illite.