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采用活性炭从含57.6g/LPt的稀溶液中吸附回收Pt。研究不同吸附工艺参数对Pt吸附回收率的影响。结果表明,随着活性炭用量的增加、吸附时间的延长和温度的升高,Pt的吸附回收率也提高。在振荡速率200r/min,吸附时间3h和25℃的条件下,使用400mg活性炭,Pt的回收率可以达到70%。然而,在80℃下吸附1h,使用200mg活性炭,Pt的吸附率就可达到88%,表明温度对吸附的影响是显著的。在80℃下吸附3h,使用400mg活性炭,Pt的吸附率可达到99%以上。
Activated carbon was adsorbed from a dilute solution containing 57.6 g / L Pt to recover Pt. The effects of different adsorption process parameters on Pt adsorption recovery were studied. The results showed that with the increase of the amount of activated carbon, the prolongation of adsorption time and the increase of temperature, the adsorption recovery of Pt also increased. Under the conditions of 200r / min oscillation speed, 3h adsorption time and 25 ℃, the recovery rate of Pt can reach 70% with 400mg activated carbon. However, adsorption at 80 ° C for 1 h and adsorption on 200 mg activated carbon resulted in 88% Pt adsorption, indicating that the effect of temperature on adsorption was significant. Adsorption at 80 ℃ 3h, the use of 400mg activated carbon, Pt adsorption rate can reach more than 99%.