Adsorption and characterization of pb(II) ion onto porogen adsorbent membrane (cc-pec-badge-na): Kinetic, equilibrium and thermodynamic studies

Adsorbent such as pectin (Pec) and chitosan (Chi) usually produced with low physical stability, thus the material needs to be modified. In this research, the physical characteristic of adsorbent increased by grafted Chi using acetate carboxymetyl chitosan (CC). Further, CC and Pectin (Pec) were cross-linked using cross-linked agent bisphenol A diglycidyl ether (BADGE) to get CC-Pec-BADGE(CPB) adsorbent. The cross-linked processing was targeted to formed stable structure and resistance on acidic media. Furthermore, to increase the adsorption capacity in removing Pb(II), the adsorbent was added with NaCl particle to form a macroporous adsorbent named CC-Pec-BADGE-Na(CPB-Na). The physical and chemical characterization of the photogenic adsorbent structure were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The parameter adsorption of CPB-Na to adsorb Pb(II) ion was determined. The kinetics and thermodynamic of the bath sorption of Pb(II) on CPB-Na adsorbent and using Chi and Pec as a comparison have been investigated. The result of this study showed that the CPB-Na biosorbent stable on acidic media, had a rough and porous surface area, increasing sorption capacity and give the higher capacity for removing of Pb(II) ion. The CPB-Na 1/1 and 1/3 adsorbent adsorb Pb(II) with adsorption capacity 45.48 mg/g and 45.97 mg/g respectively, whereas Pec and Chi was 39.20 mg/g and 24.67 mg/g respectively. © 2020 Elsevier B.V., All rights reserved.