Potansiyel Bir Adsorban Olarak Perlit İçeren Polisakkarit Esaslı Küresel Hibrit Tanecikler

Bu çalışmada, potansiyel bir adsorban olarak kullanılabilecek, sodyum aljinat esaslı, perlit içeren küresel hibrit tanecikler ani jelleşmemetodu ile hazırlanmıştır. Kerajenin kappa (κ-car) ve ioda (-car) olmak üzere iki türü ikinci bir biyopolimer olarak kullanılmış ve hibrittaneciklerin fonksiyonel gruplarını çeşitlendirilmiştir. Pek çok uygulama için çok önemli bir faktör olan tanecik boyutu ve kararlılığınaaljinatın molekül ağırlığının, jel çözelti konsantrasyonunun, kerajen ve perlit oranının etkisi incelenmiştir. Hazırlanan hibrit taneciklerinşekil, çap ve şişme dereceleri belirlenerek fiziksel, Fourier Transform lnfrared (FTIR) spektroskopi kullanılarak yapısal ve taramalıelektron mikroskobu (SEM) kullanılarak morfolojik karakterizasyonu yapılmıştır. Yüksek molekül ağırlıklı ve %2 (w/v) lik sodyumaljinat ile hazırlanan hibrit taneciklerin küresel şekil kararlılığını koruduğu, kerajenin her iki türünün %20 (ağ.)’ye kadar yapıyagirmesinin küreselliği bozmadığı, %20 (ağ.) oranına kadar katılan perlitin ise taneciklerin kuru halde küreselliklerini kaybetmelerineneden olduğu görülmüştür. Hazırlanan hibrit tanecikler ile ağır metal olarak seçilen bakırın sulu çözeltilerinden giderim etkinliğiaraştırılmış ve perlit içeren hibrit taneciklerin 10 ppm başlangıç konsantrasyonunda bakırı %77,1 oranında giderebildiği görülmüştür.

Spherical Hybrid Beads Based on Polysaccharide incorpareted with Pearlite as a Potential Adsorbent

In this study, spherical hybrid beads based on polysaccharides incorporated with pearlite, which can be a potential adsorbent, wereprepared by using instant gelation methods. Kappa (κ-car) and ioda (-car) carrageenan were used as a second biopolymer to vary thefunctional groups of hybrid beads. Particle size and its stability is a very important factor for many applications. The effect of themolecular weight and concentration of the alginate, the ratio of keragen and perlite, to the particle size of hybrid beads and stabilitywere investigated. Hybrid beads have been characterized by physical properties such as appearance, diameter and swelling degree astheir structures and morphology were confirmed by Fourier Transform lnfrared Spectroscopy (FTIR) and Scanning Electron Microscope(SEM). It was observed that hybrid beads that were prepared by using high molecular weight alginate and its 2%,(w/v) gel solutionretains its spherical shape. It was observed that both types of carrageenan ratio in the hybrid beads structure up to 20% (wt) at the 2%(wt) constant jel concentration were not deformed spherical shape of beads while pearlite caused lose their spherical shape at the drystate. Heavy metal removal efficiency of hybrid gel beads was investigated for aqueous copper solution and was found to be 77.1 % forhybrid beads incorporated pearlite (10%, wt) at the 10 ppm initial concentration of the copper solution.

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