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Biodiesel Hasil Transesterifikasi Minyak Biji Nyamplung (Calophyllum inophyllum) Dengan Metanol Musta, Rustam; Haetami, Aceng; Salmawati, Mimi
Indo. J. Chem. Res. Vol 4 No 2 (2017): Edisi Bulan Januari (Edition For January)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

Study of the transesterification of Calophyllum innophyllum seed oil from Kendari with methanol has been conducted. The purpose of the research to determine of the yield of ester produced in transesterification process with methanol, the viscosity of biodiesel produced, moisture content of biodiesel produced, density of biodiesel produced. The methods used in this study are sample preparation, transesterification process, biodiesel quality parameter test consisting of viscosity, moisture content and density. The results showed that good concentration of phosphoric acid was used to remove the gum is 85%, the yield of ester produced in the process of transesterification with methanol is 111,647%, parameter of biodiesel quality measured that viscosity = 0,315 mm2/ s not fulfill Indonesian National Standart (INS), water content is 0.02 meets the INS and the density = 0.8725 g / cm3 meets the INS standard
Studi Variasi Konsentrasi NaOH dan H2SO4 Untuk Memurnikan Silika Dari Abu Sekam Padi Sebagai Adsorben Ion Logam Pb2+ dan Cu2+ Harimu, La; Rudi, La; Haetami, Aceng; Santoso, Giswa Ayu Pratiwi; ., Asriyanti
Indo. J. Chem. Res. Vol 6 No 2 (2019): Edisi Bulan Januari (Edition For January)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

A study of variations in the concentration of NaOH and H2SO4 to purify silica from rice husk ash and its application as adsorbent of Pb2+ and Cu2+ Metal Ions. The NaOH concentrations used were 8%, 9%, 10%, 11%, 12% and 13% and H2SO4 concentrations were 5.4%, 8.16%, 10.88%, and 13.61%. The process of adsorption of Pb2+ and Cu2+ metal ions was carried out at pH (3, 4, 5, 6) and silica masses. The results showed the silica yield obtained in the form of white powder. The highest silica content at 12% NaOH concentration of 41.81% with a purity of 89.09% and H2SO4 concentration is 10.88% at 65.39% with a purity of 94.94% initial content 86.02%. The results of surface structure characterization using Scanning Electron Microscope (SEM) average size of particle diameter was 0.030 ┬Ám. Optimal adsorption process of Pb2+ and Cu2+ metal ions using silica from rice husk occurred at pH 6 and the adsorbent mass was 0.3 gram, the adsorption efficiency was 98% and 86.25% respectively with adsorption capacity of 0.96 mg/g for metal Pb2+ and 0.83 mg/g for Cu2+ metals.
Minyak Biji Nyamplung (Calophyllum inophyllum) Dengan Etanol Rezki, Rezki; Musta, Rustam; Haetami, Aceng
Indo. J. Chem. Res. Vol 4 No 2 (2017): Edisi Bulan Januari (Edition For January)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Original Source | Check in Google Scholar | Full PDF (329.178 KB)

Abstract

A study has been conducted on the transesterification of Calophyllum innophyllum seed oil with ethanol. The purpose of this research is to determine the comparison of concentration of phosphoric acid used to remove the gum on the oil, ester content is produced in the process of transesterification with ethanol, the ester yield obtained after the final stage of the transesterification process, the viscosity of the biodiesel produced, moisture content of biodiesel is produced, and density of biodiesel was produced. This research is taken based on consideration production biodiesel by direct transesterification process. Based on research result of good phosphoric acid concentration used to remove oil gum is 85%, volume of biodiesel produced at transesterification equal to 150 mL with yield 80,89%, biodiesel quality parameter measured that viscosity = 0,05 mm2 / s not fulfill Indonesian National Standart (INS), moisture content = 0.045 meets the INS and the density = 0.881 g / cm3 meets the INS