Characterization of Alginate/Perlite Particles

Authors : Hasan TÜRE, Kader TERZİOĞLU, Evren TUNCA

Pages : 756-766

Doi:10.19113/sdufbed.73663

View : 24 | Download : 11

Publication Date : 2017-09-12

Article Type : Research Paper

Abstract :In this study alginate/perlite composite particles obtained by ionic gelation method were characterized and their usability on the removal of Pb insert ignore into journalissuearticles values(II); and Ni insert ignore into journalissuearticles values(II); ions from aqueous solutions was tested. The effects of pH, contact time, initial metal ion level and perlite concentration on the adsorption capacity of particles were investigated in a batch system. Desorption of tested heavy metal ions from particles and reusability of particles were also investigated. Optical microscopy analysis showed that diameters of wet and dried particles were between 2.5-2.8 mm and 1.8-1.9 mm, respectively. Incorporation of perlite decreased the swelling degree of the particles. SEM and SEM-EDX analysis indicated that perlite appeared as thin plates and mainly composed of silica. SEM-EDX also indicated that alginate/perlite particles were composed of C, O, Na, Al, Si, and K. XRD analysis indicated that perlite had amorphous structure and distributed in the alginate matrix. According to TGA analysis, perlite improved the thermal properties of particles. The optimum pH value varied between 6 and 7 for the removal of Pb insert ignore into journalissuearticles values(II); and Ni insert ignore into journalissuearticles values(II);. The adsorption efficiency of particles reached maximum level while the perlite/alginate insert ignore into journalissuearticles values(wt. /wt.); ratio was 2.
Keywords : Alginate, Perlite, Lead, Nickel, Adsorption