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All Journal Jurnal Teknik Kimia USU
Iloan Pandang H M
Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara
Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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PEMBUATAN ASAM OKSALAT DARI PELEPAH KELAPA SAWIT (Elaeis guineensis) MELALUI REAKSI OKSIDASI ASAM NITRAT Yos Pawer Ambarita; Iloan Pandang H M; Seri Maulina
Jurnal Teknik Kimia USU Vol. 4 No. 4 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (272.663 KB) | DOI: 10.32734/jtk.v4i4.1513

Abstract

Oxalic acid is a dicarboxylic acid with the molecular formula H2C2O4 which has a wide range of applications in industry. Oxalic acid can be used as fiber bleaching agents, reagents in chemical analysis, and also used in mineral purification of metals. This study aims to determine the effects of temperature and reaction time to quantity and quality of oxalic acid produced by nitric acid oxidation from palm frond powder. The method used for the manufacture of oxalic acid in this study is oxidation method. In this method palm frond powder will be reacted with nitric acid 40 % in the ratio 1: 6 (w/v) at temperature 65, 70, 75, 80, and 85 °C and reaction time 40, 50, 60, 70 and 80 minutes, thus obtained oxalic acid. The research was conducted in several stages: oxidation reaction stage, filtration, precipitation with CaCl2, acidification with H2SO4 and efflorescence. Oxalic acid product quality analyzed using Fourier Transform Infra Red (FTIR) and Plate Melting Point Apparatus. The maksimum yield of oxalic acid was about 23.20 % which obtained at 80 °C and at reaction time 50 minutes.
PEMBUATAN ASAM OKSALAT DARI PELEPAH KELAPA SAWIT (Elaeis guineensis) DENGAN KALSIUM HIDROKSIDA Iloan Pandang H M; Yos Pawer Ambarita; Seri Maulina
Jurnal Teknik Kimia USU Vol. 5 No. 1 (2016): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.098 KB) | DOI: 10.32734/jtk.v5i1.1523

Abstract

Palm frond is the solid waste which is high in cellulose. Further processing of palm frond is capable of producing high quality product such as oxalic acid. The aim of this research was to obtain the effect of calcium hydroxide (Ca(OH)2) concentration and reaction time on the yield of oxalic acid produced with palm frond as raw material. This study was done with two steps. The first step was the preparation of palm frond until it was ready to be used. The second step was the conversion step which consists of fusion, filtration and crystallization. Oxalic acid produced was then analyzed with quantitative analysis of yield percentage and qualitative analysis using Fourier Transform Infra Red (FTIR) spectroscopy and plat melting point apparatus. The result showed that the maximum yield of oxalic acid was achieved at Ca(OH)2 concentration of 3.5 N and reaction time of 60 minutes, the value was 6.07 % based on weight of palm frond. The qualitative analysis showed that the vibration of functional groups had approached the standard oxalic acid with the melting point was 106.2 oC.
Co-Authors Seri Maulina Yos Pawer Ambarita