Solvent Polarity Effect when Amberlite-LA2 Is Used in the Extraction of Picric Acid
[ X ]
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Amer Chemical Soc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The separation and recovery of picric acid (0.061 mol-kg(-1)) from its aqueous solution was studied at a fixed temperature of 298 K. The extraction experiments were performed by using a secondary amine, Amberlite-LA2 (ALA2), dissolved in five different solvents such as dichloromethane (DCM), dodecanol, toluene, benzene, and dodecane. Physical extraction data were also produced by pure solvent alone. The experimental data obtained from the batch studies were analyzed by calculating the distribution coefficient (K-D), extraction efficiency (%E), and loading factor (Z). The highest synergistic effect was achieved with DCM in ALA2 at a concentration of 0.588 mol.kg(-1) as 83.61%. The equilibrium constants for the complex formation between acid and amine (1:1 and 2:1) were calculated for all the solvents applying the mass action law.
Açıklama
Anahtar Kelimeler
Simultaneous Back-Extraction; Supported Liquid-Membrane; Aqueous-Solutions; Sample Cleanup; P-Nitrophenol; Waste-Water; Degradation; Phenol; Preconcentration; Microextraction
Kaynak
Journal of Chemical and Engineering Data
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
62
Sayı
3
