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All Journal Jurnal Periodic Jurusan Kimia UNP Eksakta : Berkala Ilmiah Bidang MIPA
Hary Sanjaya
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering

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DEGRADASI METIL VIOLET MENGGUNAKAN KATALIS ZnO-TiO2 SECARA FOTOSONOLISIS Hary Sanjaya
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 19 No. 1 (2018): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1047.3 KB) | DOI: 10.24036/eksakta/vol19-iss1/131

Abstract

Research on the degradation of methyl violet has been done by using photosonolysis method. The purpose of this study is to determine how much time the optimum, optimum pH and the amount of doping TiO2 optimum degrade methyl violet as well as the percent degradation, determined the crystal structure and particle size of the catalyst synthesis of ZnO-TiO2 optimum degrade methyl violet using XRD, determine the value of the band gap Of the optimum ZnO-TiO2 catalyst synthesis in degrading methyl violet using UV-DRS, determining the absorption peak of Zn-O-Ti bonds from optimum ZnO-TiO2 catalyst synthesis in degrading methyl violet using FTIR. The results showed that the optimum time to degrade methyl violet was 45 minutes with 94,1371% degradation percentage. For pH variation, the optimum degradation results at pH 6 with percent degradation of 99.2857%. The effect of TiO2 doping variation showed optimum degradation result obtained on doping variation of TiO2 5% with percentage degradation of 96,2500%. The optimum catalyst structure of ZnO-TiO2 catalyst in degrading methyl violet with XRD is wurtzite (anatase) and the particle size is 42.65 - 107.60 nm. The band gap value of the optimum ZnO-TiO2 catalyst in degrading methyl violet with UV-DRS is 3.18 eV. The absorption peak of ZnO-Ti for optimum catalyst ZnO-TiO2 in degrading methyl violet with FTIR is 745.70 cm-1.
Penyerapan Logam Krom dalam Limbah Cair Laboratorium Kimia Menggunakan Adsorben Tanah Napa Mawardi Anwar; Hary Sanjaya; Victoria Frisiananda
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.044 KB) | DOI: 10.24036/p.v2i1.1929

Abstract

It has been investigated the adsorbtion of chrom metal in chemistry laboratory liquid waste using tanah napa as an adsorbent. Waste containing chrom metal was pass through a coloum that filled with tanah napa adsorbent. It is studied the use of nitrit acid (HNO3) for regeneration purpose and recovery of chrom metal at various concentration. The result showed that HNO3 at concentration 0.4M was the best for regeneration of Chrom(III) is 78.03% and concentration 0.3M for regeneration of Chrom(VI) is 53.02%. The optimum condition of this method were applied to preconcentration of Chrom in chemistry laboratory liquid waste with HNO3 0.3M. The result show that Chrom found in chemistry laboratory liquid waste which is initially 0.9123 ppm can be preconcentration to 1.7760 ppm with 5x10mL preconcentration.
Co-Authors Mawardi Anwar Victoria Frisiananda