摘要
采用静态吸附法研究了不同比例钙铝、铁铝、锰铝的磷酸盐共沉物的除氟性能，比较发现，铝与铁的磷酸盐共沉物除氟效果最好，锰离子对磷酸铝的除氟效果则有明显的抑制作用。以吸附性能较好的1：100铁铝比例的磷酸盐共沉物为吸附剂，研究了接触时间、pH值、吸附剂量等对其除氟效果的影响，结果表明，在25℃、氟离子初始质量浓度为10mg·L^-1、pH值为6～8、振荡时间为90min、投加量为2．5g·L^-1条件下，1：100铁铝比例的磷酸盐共沉物对氟的吸附量可达2．7mg·g^-1。
Effects of co-precipitates of Ca/Al, Fe/Al and Mn/Al phosphates of different ratios in removing fluoride from synthetic solution were studied with the static adsorption method. Results show that the co-precipitate of Fe/Al phosphate was the best in effect of removing fluoride, and Mn ions significantly inhibited the effect of aluminium phosphate. Affecting factors, such as duration of exposure, pH and amount of the adsorbent used, were also studied, using the co-precipitate of Fe/Al phosphate, 1 ： 100 in ratio as adsorbent. It was found that the absorption rate of the adsorbent reached as high as 2. 7 mg · g^-1 when the fluorinated water with its initial fluoride concentration being 10 mg · g^-1 and pH ranging between 6-8 and the adsorbent application rate at 2.5 g · g^-1 was shaken for 90 minutes at the temperature of 25 ℃.
出处
《生态与农村环境学报》
CAS
CSSCI
CSCD
北大核心
2010年第1期92-95,共4页
Journal of Ecology and Rural Environment
基金
国家自然科学基金(50309011)
国家级星火计划(2006EA850047)
教育部留学回国人员科研启动基金(08501041585)
农业部现代农业产业技术体系建设专项资金(nycytx-08)
关键词
高氟水
磷酸铝
磷酸铁
吸附
high-fluorine water
aluminum phosphate
iron phosphate
adsorption
