Tuğba SARDOHAN KÖSEOĞLU, Esengül KIR, Berrin KIR, Ahmet Hamdi AYDIN, Mahrijemal ORAZOVA, ennet BAYRİYEVA, Dilnoza YOLDASHOVA, Fatma Nur ÇILGIN

Ditiyofosfatlar Kullanılarak Yenilikçi Polisülfon Mikrokapsül Geliştirilmesi ve Ni(II) İyonu Giderim Performansının Belirlenmesi

Bu çalışmada, adsorban madde olarak ditiyofosfat türevleri olan amonyum-O,O dibenzilditiyofosfat (L1) ve amonyum- O,O diisobütilditiyofosfat (L2) bileşikleri kullanılarak faz inversiyon metodu ile polisülfon mikrokapsüller hazırlanmıştır. Mikrokapsüllerin karakterizasyonu taramalı elektron mikroskop (SEM) kullanılarak incelenmiştir. Hazırlanan polisülfon mikrokapsüllerin sulu çözeltilerdeki Ni(II) iyonlarının uzaklaştırılması kapsamında adsorpsiyon özelliklerinin incelenmesi kesikli sistem kullanılarak yapılmıştır. Adsorpsiyona etki eden çözelti pH’sı, temas süresi, adsorban madde miktarı (mikrokapsül miktarı), sıcaklık ve metal çözeltisinin konsantrasyonu gibi parametreler incelenmiştir. Adsorpsiyon mekanizmasının hangi izoterme uyduğunu araştırmak için Langmuir ve Freundlich adsorpsiyon izotermleri incelenmiştir. Bu deneylerin sonucunda, Ni(II) metal iyonlarının adsorpsiyon davranışının Langmuir izotermine uygun olduğu görülmüştür. Adsorpsiyon kinetik özellikleri de incelenmiş ve Ni(II) adsorpsiyonunun Pseudo II. derece kinetik modeline daha uygun olduğu sonucuna varılmıştır.

Anahtar Kelimeler:

Adsorpsiyon, Ditiyofosfat; Mikrokapsül; Polisülfon; Ni(II)

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