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Charissa Dini Sofith
Universitas Sumatera Utara
Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Kinerja Aktivasi dan Impregnasi Zeolit Alam sebagai Adsorben Charissa Dini Sofith; Sri Rahmadaniati Effendi; Fatimah
Jurnal Teknik Kimia USU Vol. 9 No. 2 (2020): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (312.45 KB) | DOI: 10.32734/jtk.v9i2.3764

Abstract

Performance of natural zeolites can be improved through the process of activation and impregnation. Activation process using HCl and impregnation with Mg2+ have carried out in this study. The activation process was performed out for 30 minutes with a 0.5M HCl solution and impregnation of MgCl2.6H2O 2.5M for 2 hours. Natural zeolites which have been activated and impregnated are then analyzed by the Scanning Electron Microscope-Energy Dispersive Spectrophotometer (SEM-EDS). The results of zeolite surface profile characteristics activated and impregnated using SEM-EDS showed that there were changes in morphology and functional groups. Then, activated and impregnated zeolites were used to absorb ammonia at various contact times of 5 minutes, 10 minutes, 15 minutes, 20 minutes, 25 minutes, 30 minutes, 35 minutes, 40 minutes and 45 minutes. The equilibrium point was obtained at 25 minutes contact time with adsorption capacity of 30.444 mg/g and absorption efficiency of 85.2352%. The dosage of adsorbent varied with 0.01% size; 0.03%; 0.05%; 0.07%; 0.09%; 0.11%, 0.13% m/v. The concentration of ammonia absorbed was performed out using an Uv-Vis Spectrophotometer. The best efficiency of ammonia absorption is 90.106% with particle size 110-120 mesh, adsorbent dose 0.09% and adsorbent impregnation treatment.
Pengaruh Ukuran Partikel Zeolit Alam yang Diaktivasi dan Diimpregnasi HCl dan Mg2+ pada Penjerapan Ion Fosfat Fatimah; Sri Rahmadaniati Effendi; Charissa Dini Sofith
Jurnal Teknik Kimia USU Vol. 10 No. 1 (2021): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.625 KB) | DOI: 10.32734/jtk.v10i1.4010

Abstract

Research on phosphate adsorption using natural zeolites which were activated and impregnated with HCl and Mg2 +had been carried out. This study examined the effect of natural zeolite particle size on phosphate ion adsorption. Stages of the study began from sifting zeolites in accordance with the specified size (50/70 mesh, 70/110 mesh and 110/120 mesh), washing, activation and impregnation. Natural zeolite with 110/120 mesh particle size is used to determine the contact time in absorbing phosphate ions. Natural zeolite can absorb phosphate as much as 8.53 mg / l or 85.3% with a contact time of 35 minutes. The variation of the adsorption on the natural zeolite particle size is carried out to get the effect of the natural zeolite particle size on the adsorption of phosphate ions. Phosphate ions which are absorbed by zeolites are analyzed using a UV-Vis spectrophotometer. The highest absorption efficiency (99.26%) was obtained for natural zeolite particle size 110/120 mesh. The natural zeolite adsorption isotherm model of the phosphate ion is tested with the Freundlich and Langmuir equations. Based on the data obtained, the isotherm model suitable for this study is Freundlich with a value of R2 = 0.985.
Co-Authors Fatimah Sri Rahmadaniati Effendi