کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
213321 | 462094 | 2008 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Lithium recovery from highly concentrated solutions: Response surface methodology (RSM) process parameters optimization Lithium recovery from highly concentrated solutions: Response surface methodology (RSM) process parameters optimization](/preview/png/213321.png)
Lithium recovery from aqueous solutions was studied by trapping lithium ions using a gel of aluminum hydroxide freshly prepared in situ under the reaction of a strong base. A 24 − 1 fractional factorial design and central composite design were employed for experimental design and analysis of the results. The combined effect of molar ratio Al/Li, pH and stirring time on lithium trapping at 25 °C was investigated and optimized using response surface methodology (RSM). The optimum values of these factors were found to be 4.7, 7.2 and 3 h respectively. In this case the lithium trapping percent is ∼ 95%. The obtained model is highly significant (Fobs > Ftabulate and low p-value) with a correlation coefficient of 96.64%. On the other hand, linear, quadratic and interaction terms in this model have the largest statistical effect on the response (confidence level = 99.9%).
Journal: Hydrometallurgy - Volume 90, Issue 1, January 2008, Pages 1–7