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目的研究纳米材料对人工配水中氟离子吸附去除的规律和影响因素,为研制新型除氟材料提供一定的理论依据。方法分别选取不同纳米材料和常规除氟材料,利用静态试验对人工配水中氟进行去除效果的比较,并探讨环境因素对去除效果的影响。氟采用分光光度法进行测定。结果纳米材料的除氟效果优于常规除氟材料,试验中纳米γ-Al2O3的除氟效果较好,对氟的饱和吸附容量达到13.46 mg/g,氟的去除效果受温度影响,而受pH及常见阴离子CI-和SO42-影响小。结论纳米材料γ-Al2O3对水中氟的去除效果较好,经过进一步的研究有望应用于饮水除氟。
Objective To study the rules and influencing factors of adsorption and removal of fluoride ions in artificial water by nano-materials and to provide some theoretical basis for the development of new fluoride-removing materials. Methods Different nanomaterials and conventional fluoride removal materials were selected respectively. The static test was used to compare the removal efficiency of fluoride in artificial water distribution and the influence of environmental factors on the removal efficiency. Fluorine is measured spectrophotometrically. As a result, the removal of fluoride by nanomaterials was better than that of conventional fluoride-removal materials. The γ-Al2O3 nanofillers exhibited better de-fluoride effect, the saturated adsorption capacity of fluorine was 13.46 mg / g, the removal of fluoride was affected by temperature, And common anion CI- and SO42- little effect. Conclusion The γ-Al2O3 nanomaterials have good effect on the removal of fluorine in water. After further research, it is expected to be applied to fluoride removal in drinking water.