Karakteristik Silika Sekam Padi Kabupaten Cilacap Dengan Menggunakan Ekstraksi KOH Dan HCl

Nur Fitry Indah Mawarti (Politeknik Negeri Cilacap)
Riza Ma'riffathur Ramadhan (Politeknik Negeri Cilacap)
Saddam Libertyan (Politeknik Negeri Cilacap)
Dodi Satriawan (Politeknik Negeri Cilacap)

Dinamika Lingkungan Indonesia
Vol 11, No 1 (2024)

This research aims to conduct an initial analysis of the characteristics of rice husk silica to be used as a membrane for purifying used cooking oil. Rice husks were obtained from Cilacap district. Rice husks are pyrolyzed at 650 0C for 6 hours until rice husk ash is produced. The rice husk ash is ground to a size of 50 mesh. Then 50 grams of rice husk ash was weighed and washed with 1 L of distilled water at a temperature of 80 0C. The washed ash was then extracted with 1 L of 5% KOH for 2 hours at a temperature of 75 0C. The silica extraction was divided into 5 and 10% HCL was added to obtain a pH of 4, 5, 6, 7, and 8. The analysis carried out included rice husk ash yield analysis, silica yield, water content analysis, and iodine absorption analysis. The best results were obtained at pH 8 in the silica yield obtained, the water content at pH 6 was 7.4%, and the iodine absorption capacity at pH 8 was 1271.71%.