The effect of activation temperature and H3P04 concentration on quality of waste of Petung bamboo (Dendrocalamus asper)activated charcoal

摘要

The aim of this research was to determine the effect of activation temperature and H_3PO_4 concentration on quality of waste of Dendrocalamus asper activated charcoal. The research was designed in a completely randomized design with 2x5 factorial, each treatment was 5 times repeated. Waste of Dendrocalamus asper was carbonized in an electrical retort at 400°C for 3.5 hours, then activated at 800°C and 900°C for 0%, 0.5%, 1%, 3% and 5% H3P04 concentration at each temperature. The quality of activated charcoal showed that the yields were 5.62 - 10.22% moisture content, 28.6 - 46.8% volatile matter, 9.15 - 14% ash content, 47.7 - 57.4% fixed carbon, 2.3 - 9.08% benzene adsorption, 265.065 ~ 814.283 (mg/g) iodine adsorption, 134.854 - 137.094 (mg/g)methylene blue adsorption. The application of activated charcoal at ex-cooking oil (second quality) increased the colour and iodine number 2100% and 0.89% respectively while fatty acid and peroxide number decreased 1.54% and 43.83% respectively.