胶原纤维负载锆(Ⅳ)吸附剂的制备及其吸附水中氟离子的研究

A study of Zr(Ⅳ) immobilized collagen fiber adsorbent preparation and its adsorption performance for fluorine ions in water

以胶原纤维为基质负载Zr（Ⅳ）制备新型吸附剂（ZrCF），考察了Zr4＋浓度对制备吸附材料的影响，并探讨了该纤维材料对高氟地下水中氟离子的富集作用和对含氟废水深度处理的吸附作用。结果表明：制备ZrCF适宜的Zr4＋浓度是6．67mmoL／g，适宜的吸附pH值范围是4．0～9．0，0．05g的吸附剂对于氟离子质量浓度为5mg／L的地下水连续使用3次后达饱和，而对于0．05mg/L地下水可以连续使用9次。动态处理的富集作用优于静态分批次使用的效果．当处理水量与吸附剂体积比小于162．5时，1．0g的ZrCF对一级处理后的工业废水进行深度处理可以使出水溶液中的氟离子浓度降至国家工业排放标准限度以下。

A new type of adsorbent（ZrCF） was prepared by immobilizing Zr（Ⅳ） onto the surface of collagen fiber, and the influence of Zr^4＋ concentration on the preparation was studied. The effect of the said fiber material on the enrichment of fluorine ions in high fluorine groundwater and the advanced treatment of fluorine-containing wastewater were discussed. The results showed that： for ZrCF preparation, the proper concentration of Zr^4＋ was 6.67 mmol/g; and the suitable pH range for the adsorption was 4.0 - 9.0. 0.05 g ZrCF was saturated after being used continuously for 3 times in the groundwater with fluorine ion concentration of 5 mg/L or for 9 times in the groundwater with fluorine ion concentration of 0.05 mg/L. The enrichment performance of the said fiber material treated under dynamic condition was superior to that treated in batches under static condition. When the volume ratio of wastewater to adsorbent was below 162.5, using 1.0 g ZrCF to treat the industrial wastewater after primary treatment could decrease the concentration of fluorine ion in the effluent water to below the limit of national discharge standard for industrial wastewater.