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Ahmad Moh. Nur
Universitas Mulawarman
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Environmental Science

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OPTIMALISASI PROSES EKSTRAKSI MINYAK BIJI NYAMPLUNG MENGGUNAKAN RESPONSE SURFACE METHODOLOGY (RSM) Ahmad Moh. Nur; Hairul Huda; Rif'an Fathoni
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.9450

Abstract

Nyamplung (Calophyllum inophyllum L.) is a plant with great potential as a fuel source that can be developed in Indonesia. The oil content of nyamplung seeds is 60-75%. This study aims to optimize the process of extracting oil from nyamplung seeds using hexane solvent at various operating conditions and obtain optimum extraction operating conditions. In the process stage, extraction will be carried out using hexane solvent with several operating variations, namely extraction temperature (35-45oC); extraction time (4-6 hours); stirring speed (200-600 rpm), the process of optimizing oil extraction from nyamplung seeds was carried out using the Response Surface Methodology (RSM). The oil obtained was then characterized through several analyzes, namely yield, acid number, density and viscosity. Based on the research results, optimization of the nyamplung seed oil extraction process resulted in an oil yield of 52.43% which was obtained at 40oC, 5 hours of extraction time and 500 rpm of stirrer speed. Optimization with the aim of maximizing the oil yield response was obtained 55.33% yield at 45oC, 6 hours extraction time and 600 rpm stirrer speed. Optimization of each oil quality does not produce a significant model response. The quality of the oil resulting from the optimization of the yield is an acid number of 10.51 mgKOH/g, a density of 0.94 g/ml, and a viscosity of 4.47 cP.Keywords: calophyllum, oil, optimization, response surface methodology 
KEMAMPUAN ADSORBSI LOGAM BERAT Zn DENGAN MENGGUNAKAN ADSORBEN KULIT JAGUNG (ZEA MAYS) Febbi Zulfania; Ari badin; Rif'an Fathoni; Ahmad Moh. Nur
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.8060

Abstract

Adsorpsi merupakan suatu proses pemisahan bahan dari campuran gas maupun cairan, bahan yang harus dipisahkan ditarik oleh permukaan adsorben padat lalu diikat oleh gaya-gaya yang berkerja pada permukaan tersebut. Karbon aktif merupakan salah satu adsorben yang paling sering digunakan untuk menjerap zat-zat tertentu pada suatu larutan seperti kandungan logam.. Kulit jagung memiliki kandungan selulosa yang cukup tinggi, sehingga dapat digunakan sebagai adsorben. Penelitian ini bertujuan untuk mengetahui pengaruh massa adsorben pada pengurangan kadar logam dan mengetahui pengaruh aktifator terhadap adsorbsi. NaOHsebagai aktivator karbon kulit jagung terhadap adsorpsi kadar logam dalam larutan ZnSO4. dimana diketahui kadar awal larutan ZnSo4 sebesar 15 mg/L. Dilakukan adsorpsi dengan adsorben karbon dari kulit jagung dengan maasa adsorben 0,8 gram yang telah diaktivasi dengan konsentrasi aktivator 1 mg/L, 1,2 mg/L, 1,4 mg/L, 1,6 mg/L dan 1,8 diperoleh penurunan, kadar Zn hingga sebesar 93%. Selanjutnya dilakukan adsorpsi dengan adsorben karbon dari kulit jagung dengan maasa adsorben 1 gram yang telah diaktivasi dengan konsentrasi aktivator 1 mg/L, 1,2 mg/L, 1,4 mg/L, 1,6 mg/L dan 1,8 diperoleh penurunan, kadar Zn hingga sebesar 73%.
Co-Authors Ari badin Fathoni, Rif'an Febbi Zulfania Hairul Huda