Impregnasi CuO pada SiO2 dari Sekam Padi sebagai Adsorben Ion Fosfat dalam Air

Yudhitya, Maria Christine (2025) Impregnasi CuO pada SiO2 dari Sekam Padi sebagai Adsorben Ion Fosfat dalam Air. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kinerja adsorben berbasis silika (SiO2) dari sekam padi termodifikasi tembaga(II) oksida dengan cara impregnasi menjadi CuO/SiO2 dalam adsorpsi ion fosfat telah dipelajari. Adsorben hasil sintesis xCuO/SiO2 dengan x =0;0,2;0,4;0,6;0,8;1% w/w SiO2 dikarakterisasi dengan XRD dan FTIR, luas permukaan diukur dengan metode Metilen Biru (MB). Pola difraksi semua adsorben xCuO/SiO2 menunjukkan puncak lebar pada 2θ ≈ 22°. Spektra FTIR xCuO/SiO2 sama untuk seluruh adsorben, pada adsorben terimpregnasi tidak terdeteksi puncak CuO. Luas permukaan xCuO/SiO2 diperoleh antara 8,855 dan 9,168 m2/g. Uji adsorpsi ion fosfat menunjukkan waktu kontak optimum 120 menit dan massa adsorben 0,05 g. Efisiensi adsorpsi ion fosfat meningkat seiring peningkatan dosis adsorben dan tertinggi pada 1CuO/SiO2 dengan efisiensi sebesar ± 99,43%. Analisis kinetika menunjukkan bahwa proses adsorpsi mengikuti model kinetika orde dua semu dalam penyerapan ion fosfat.
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The performance of silica (SiO2) based adsorbent from rice husk modified with copper (II) oxide by impregnation into CuO/SiO2 in adsorption of phosphate ion has been studied. The synthesized adsorbent xCuO/SiO2 with x = 0;0,2;0,4;0,6;0,8;1% w/w SiO2 was characterized by XRD and FTIR, the surface area was measured by Methylene Blue (MB) method. The diffraction pattern of all xCuO/SiO2 adsorbents showed a broad peak at 2θ ≈ 22°. The FTIR spectra of xCuO/SiO2 were the same for all adsorbents, no CuO peak was detected in the impregnated adsorbent. The surface area of xCuO/SiO2 was obtained between 8,855 and 9,168 m2/g. Phosphate ion adsorption test showed contact time of 120 minutes and adsorbent mass of 0,05 g. Phosphate ion adsorption efficiency increased with increasing adsorbent dosage and was highest at 1CuO/SiO2 with an efficiency of ± 99.43%. Kinetic analysis showed that the adsorption process followed a pseudo second order kinetic model in phosphate ion absorption.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Adsorpsi, Ion Fosfat, Silika, Tembaga(II) Oksida, Sekam Padi, xCuO/SiO2, Adsorption, Phosphate Ion, Silica, Copper(II) Oxide, Rice Husk, xCuO/SiO2.
Subjects:	Q Science > QD Chemistry > QD502 Chemical kinetics Q Science > QD Chemistry > QD63 Extraction
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Maria Christine Yudhitya
Date Deposited:	06 Aug 2025 01:19
Last Modified:	06 Aug 2025 01:19
URI:	http://repository.its.ac.id/id/eprint/127699

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