کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
625005 | 1455414 | 2011 | 7 صفحه PDF | دانلود رایگان |
The effect of regeneration conditions (solution type, concentration, volume, and temperature) on propylamine-functionalized mesoporous silica was investigated after three adsorption–desorption cycles, under different batchwise regeneration conditions. Three criteria were used to determine the effect of regeneration conditions, namely: adsorption capacity, structural stability and amine loading and accessibility. Using a composite surface design methodology, the effect of these regeneration conditions on the performance of the adsorbent was investigated. It was found that all the studied parameters have a statistically significant influence on the working adsorption capacity with the order: concentration > solution type > temperature > solution volume. With respect to structural properties and amine content, none of the factors was found to be significant. Regeneration using EDTA was found to be more efficient than acid treatment.
Research highlights
► We regenerated copper adsorbent under different conditions.
► We used statistical design analysis for modeling the system.
► All the studied parameters have significant effect.
► The adsorbent showed excellent regeneration performance.
Journal: Desalination - Volume 277, Issues 1–3, 15 August 2011, Pages 54–60