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羟基磷灰石(HAP)是一种新型的氟离子吸附剂。以模拟含氟水样为处理对象,采用静态吸附实验研究了温度、p H值、吸附时间等因素对HAP除氟性能的影响。探讨了HAP吸附剂的等温吸附过程。结果表明:HAP的最大吸附量为5.32mg/g;50min之内吸附速率较快,在60min时吸附过程趋于平衡;酸性环境下吸附效果较好;升高温度有利于吸附的进行且吸附过程符合Langmuir模型。该研究可为HAP工业应用提供可靠的理论基础和科学依据。
Hydroxyapatite (HAP) is a new type of fluoride ion adsorbent. In order to simulate the fluorine-containing water samples for the treatment of objects, static adsorption experiments were used to study the influence of temperature, p H value and adsorption time on the fluoride removal performance of HAP. The isothermal adsorption process of HAP adsorbent was discussed. The results showed that the maximum adsorption capacity of HAP was 5.32 mg / g, the adsorption rate was faster within 50 min, the adsorption process tended to balance at 60 min, the adsorption was better in acidic environment, and the higher temperature was favorable for the adsorption process Fits the Langmuir model. This research can provide reliable theoretical basis and scientific basis for HAP industrial application.