CAJ | 학술논문

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10 mg·L~(-1)、pH值为6~8、振荡时间为90 min、投加量为2.5 g·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2.7 mg·g~(-1).
채용정태흡부법연구료불동비례개려、철려、맹려적린산염공침물적제불성능,비교발현,려여철적린산염공침물제불효과최호,맹리자대린산려적제불효과칙유명현적억제작용.이흡부성능교호적1:100철려비례적린산염공침물위흡부제,연구료접촉시간、pH치、흡부제량등대기제불효과적영향,결과표명,재25 ℃、불리자초시질량농도위10 mg·L~(-1)、pH치위6~8、진탕시간위90 min、투가량위2.5 g·L~(-1)조건하,1:100철려비례적린산염공침물대불적흡부량가체2.7 mg·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·L~(-1) and pH ranging between 6-8 and the adsorbent application rate at 2.5 g·L~(-1) was shaken for 90 minutes at the temperature of 25 ℃.