Malaysian Journal of Analytical Sciences Vol 26 No 2 (2022): 334 - 346

 

 

 

 

Preparation of extracted magnetite from AN industrial waste mill MODIFIed by CETYL TRIMETHYL ammonium bromide for Cadmium ion removal from aqueous solution

 

(Penyediaan Magnetit daripada Sisa Buangan Sisik Besi yang Dimodifikasikan oleh Setil Trimetil Ammonium Bromida untuk Menyerap Kadmium Ion daripada Larutan Akues)

 

Nur Asyikin Ahmad Nazri^1,2* , Raba’ah Syahidah Azis^2,3 , Hasfalina Che Man⁴, Ismayadi Ismail²

 

¹Centre of Foundation Studies, Cawangan Selangor,

Universiti Teknologi MARA, 43800 Dengkil, Selangor, Malaysia

²Material Synthesis and Characterization Laboratory (MSCL), Institute of Advanced Technology (ITMA)

³Department of Physics, Faculty of Science

⁴Department of Biological and Agricultural Engineering, Faculty of Engineering

Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia

 

*Corresponding author:  asyikin2750@uitm.edu.my

 

 

Received: 9 September 2021; Accepted: 18 December 2021; Published:  28 April 2022

 

 

Abstract

This work, using a batch study, revealed the performance of modified magnetite millscales with a cationic surfactant [cetyl trimethyl ammonium bromide (CTAB)] (Fe₃O₄/CTAB MNS) in cadmium ion removal from aqueous solution. The self-assembly method was employed to modify Fe₃O₄ with CTAB. As prepared Fe₃O₄ limited the modification method to ex situ. Therefore, a heterocoagulation method was used to self-assemble CTAB on Fe₃O₄. The prepared magnetic nanosorbents (MNSs) were used in batch adsorption to optimize cadmium adsorption. In addition, characterization with Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM) revealed new characteristics of that modified Fe₃O₄ that contributed to the enhancement of the adsorption efficiency (Q) to reach 21.6 mg/g. The higher removal percentage shown by Fe₃O₄/CTAB MNS was 89%, which confirmed the successful modification. Therefore, Fe₃O₄ modified with CTAB has higher potential to be used as magnetic nanosorbent owing to lower cost of production with compatible adsorption capacity.

 

Keywords:     stabilized magnetite, magnetic nanosorbents, cadmium solution, cation polymer, cetyl trimethyl ammonium   bromide

 

Abstrak

Kajian ini mendedahkan prestasi skala magnetit yang diubah suai dengan surfaktan kationik (setil trimetil ammonium bromida (CTAB)) (Fe₃O₄ / CTAB), digunakan sebagai penyingkiran ion kadmium dari larutan akues melalui kajian kumpulan. Kaedah pemasangan diri digunakan untuk mengubah Fe₃O₄ dengan CTAB. Fe₃O₄ yang telah disiapkan telah membatasi kaedah modifikasi menjadi ex situ. Oleh itu, kaedah heterokoagulasi digunakan untuk memasang CTAB pada Fe₃O₄. Penjerap nano magnetik yang disiapkan (MNS) digunakan dalam penjerapan kumpulan untuk mengoptimumkan penjerapan kadmium. Selain itu, pencirian dengan spektroskopi infra merah transformasi Fourier (FTIR), dan mikroskopi elektron transmisi (TEM) telah mengungkapkan ciri-ciri baru Fe₃O₄ yang dimodifikasi yang menyumbang kepada peningkatan kecekapan penjerapan (Q) menjadi 21.6 mg/g. Peratusan penyingkiran yang lebih tinggi yang ditunjukkan oleh Fe₃O₄ / CTAB MNS adalah 89% yang membuktikan pengubahsuaian berjaya. Oleh itu, dapat disimpulkan bahawa modifikasi dengan CTAB berpotensi lebih tinggi untuk digunakan sebagai penjerap nano magnetik kerana melibatkan kos pengeluaran yang lebih rendah dengan kapasiti penjerapan yang serasi.

 

Kata kunci:     magnetit stabil, penjerap nano magnetik, larutan kadmium, polimer kation, setil trimetil ammonium bromida

 

 

 

Graphical Abstract

 

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