Preparation of Chitosan Coated Magnetic Hydroxyapatite Nanoparticles and Application for Adsorption of Reactive Blue 19 and Ni²⁺Ions

Abstract

An adsorbent called chitosan coated magnetic hydroxyapatite nanoparticles (CS-MHAP) was prepared with the purpose of improvement for the removal of Ni2+ ions and textile dye by coprecipitation. Structure and properties of CS-MHAP were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and vibrating sample magnetometer (VSM). Weight percent of chitosan was investigated by thermal gravimetric analysis (TGA). The prepared CS-MHAP presents a significant improvement on the removal efficiency of Ni2+ ions and reactive blue 19 dye (RB19) in comparison with chitosan and magnetic hydroxyapatite nanoparticles. Moreover, the adsorption capacities were affected by several parameters such as contact time, initial concentration, adsorbent dosage, and initial pH. Interestingly, the prepared adsorbent could be easily recycled from an aqueous solution by an external magnet and reused for adsorption with high removal efficiency.

Fixed-Bed Column Studies for the Removal of Congo Red Using <i>Simmondsia chinesis</i> (Jojoba) and Coated with Chitosan

“…Natural polysaccharide chitosan, a derivative of chitin [8][9] has been known for its unique properties due to the existence of high content of amino and hydroxyl functional groups in its molecules that contribute in the process of adsorption [10]. Moreover, chitosan is a nontoxic, biodegradable, and biocompatible polymer, which can be used as a wound dressing, tissue engineering, and drug delivery systems [11].…”

Ali̇zari̇n Kirmizi Boyasinin Hi̇droksi̇apati̇t Kullanilarak Adsorpsi̇yon Prosesi̇ İle Gi̇deri̇mi̇

“…Hidroksiapatit toksik olmaması, düşük çözünürlüğü ve stabil olması gibi özelliklerinde dolayı metal ve renk adsorpsiyonunda yaygın olarak kullanılmaktadır [6,7]. Yapılan çalışmalarda, hidroksiapatit veya katkılı hidroksiapatit kullanılarak adsorpsiyon prosesi ile renk gideriminde olumlu sonuçlar alınmıştır [6][7][8][9][10].…”

Synthesis and Characterization of Magnetic-Hydroxy Apatite Composite Usingone Spot Coprecipitation Method

“…Having a chemical composition of Ca 10 (PO 4 ) 6 (OH) 2 , which is similar to the composition of human bones, synthetic HAP has been used in healing or recovery of broken bones [1]. Recently, considerable research were carried out on combining HAP with magnetic nanoparticle [2][3][4][5]. Magnetic nanoparticle has been developed to be applied in some biomedical field due to its magnetic properties that can support diagnostic as well as therapeutic process.…”