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All Journal Indonesian Journal of Chemistry Jurnal Agrotek Tropika
Budy Rahmat
Department of Agrotechnology, University of Siliwangi, Jl. Siliwangi No. 24 Tasikmalaya, West Java
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry

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EFFECT OF GLYCEROL SEPARATION ON PALM OIL TRANSESTERIFICATION Budy Rahmat; Imas Siti Setiasih; Roni Kastaman
Indonesian Journal of Chemistry Vol 12, No 3 (2012)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (323.28 KB) | DOI: 10.22146/ijc.21339

Abstract

This research was aimed to study the effect of glycerol separation on palm oil transesterification. Objectives of this study were to suppress the use of excess methanol and shorten the processing time. This research consisted of: design-build reactor, the effect of the glycerol separation on the transesterification reaction, characterization of biodiesel, and mass balance analysis. The reactor was designed by integrating circulate stirrer pump, static mixer, and sprayer that will bring out the intense reaction in the outer tank reactor. The experiment in this research was the treatment of decreasing the quantity of methanol to 5:1 molar ratio and reducing of processing time to 20 min, which was arranged in a completely randomized factorial design. The result showed that, (i) the stirring system was effectively worked outside the reactor tank, and in its reactor tank occurred glycerol separation during the process; (ii) the rate of glycerol during the process followed the inverse regression equation of Ŷ = 66.44-351.17 X-1; (iii) the decrease in the level of methanol to 5:1 molar ratio and the reduction of processing time to 20 min in this engineering did not influence the biodiesel yield and quality that met the SNI 04-7182-2006 standard.
EFEK KONSENTRASI ASAP CAIR DAN WAKTU PERENDAMANNYA TERHADAP KUALITAS KOPRA PUTIH Rahmat, Budy; Dewi Hamadatus Solihah; Dedi Natawijaya; Yanto Yulianto
Jurnal Agrotek Tropika Vol. 13 No. 4 (2025): JURNAL AGROTEK TROPIKA VOL 13, NOVEMBER 2025
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v13i4.9671

Abstract

Kopra konvensional biasanya daging buah kelapa diolah dengan dijemur atau digarang untuk menurunkan kadar air dan menghambat pertumbuhan mikroba. Serangan mikroba ini mengakibatkan penurunan kualitas kopra.  Perlakuan asap cair pada produksi kopra diharapkan sebagai zat antimikroba alternatif yang aman, karena kandungan senyawa fenol dan asam organik di dalamnya. Tujuan penelitian ini adalah menentukan kombinasi perlakuan konsentrasi asap cair tempurung kelapa dan waktu perendamannya yang paling baik terhadap kualitas kopra putih. Percobaan untuk menguji sepuluh kombinasi perlakuan antara konsentrasi asap cair 10, 15, dan 20% dan waktu perendamannya 5, 10,  dan 20 menit dan satu perlakuan kontrol, yang masing-masing dilakukan tiga ulangan, yang disusun dalam Rancangan Acak Lengkap. Data pengamatan respons percobaan dianalisis statistik dengan Anova dan Uji Duncan pada taraf 5%. Hasil peneltian menunjukkan bahwa, perlakuan kombinasi konsentrasi dan lama peredaman  berpengaruh terhadap parameter dari bebas fungi, keutuhan, warna, rendemen minyak kopra, dan kadar asam lemak bebas pada minyak kopra.  Kombinasi perlakuan konsentrasi asap cair 10% dan waktu perendaman 10 menit memberi efek antimikroba yang optimum, sehingga menghasilkan kualitas kopra yang terbaik.
Co-Authors Dedi Natawijaya Dewi Hamadatus Solihah Imas Siti Setiasih Roni Kastaman Yanto Yulianto