1Department of Chemistry, Faculty of Science and Technology, Universitas Jambi, Indonesia
2Master of Chemistry Program, Department of Chemistry, Institut Teknologi Sepuluh Nopember, Indonesia
3Department of Chemistry, Universitas Pertahanan, Indonesia
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@article{JKSA31123, author = {Ngatijo Ngatijo and Restina Bemis and Abdul Aziz and Rahmat Basuki}, title = {Reinforcement of Quaternary Ammonium Modified Silica (QAMS) with Magnetite and its Application by Solid Phase Adsorption (SPA) to Adsorb Chromate Ions}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {23}, number = {10}, year = {2020}, keywords = {QAMS-Magnetite; Solid Phase Adsorption (SPA); chromate ions}, abstract = {Chromium (VI) in the form of chromate anions that have toxic properties needs to be overcome. This study aims to reinforce cationic sorbent quaternary amine-modified silica with magnetite (QAMS-Fe 3 O 4 ) to adsorb chromate ions. QAMS prepared by reflux methylation ammine modified silica (AMS) obtained from destruction silicate from rice husk ash followed by the addition of 3-APTMS. Characterization QAMS-Fe 3 O 4 by FT-IR showed successfully of methylation process indicated by disappearing absorbance at 1388 cm -1 , and emerging absorbance at 2939 cm -1 in QAMS and QAMS-Fe 3 O 4 indicated a transformation of N-H from -NH 2 group to [-N + (CH 3 ) 3 ]. XRD analysis denotes 2θ = 30.15°, 35.53°, 43.12°, 57.22°, and 62.90° (JCPDS No. 00-033-0664) fathomed as a characteristic peak of magnetite. SEM-EDX reveals the homogenous topological spherical form with an average particle size 0.006 µm that is dominated by Si element (52.81%) with magnetic moment value = 34.1 emu/g. The stability test shows that this material stable in an acid condition. The adsorption of chromate ions was conducted by the SPA method. Optimal pH obtained by pH range 4-7 with more than 90% adsorbed chromate ions. Variation of increasing series flow rate from 0.05 to 1.5 mL min -1 resulted in decreased adsorbed chromate ions. The use of SPA methods offered simpler and easier handling than the batch method without overriding the adsorption process effectiveness.}, issn = {2597-9914}, pages = {338--345} doi = {10.14710/jksa.23.10.338-345}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/31123} }
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