Penentuan Kadar Aluminium Oksida ( Al2O3 ) dalam Limbah Pengolahan Aluminium

Abstract

Determination of aluminium oxide (Al2O3) in aluminium manufacturing rubbish had be done by Decreasing the content of sasquioksida (R2O3) with the content of ferric oxide (Fe2O3). To determine the content of sasquioksida was be done by adding ammonium hydroxide ( NH4OH) and then by ignition it at 10000C for 4 hours to produce Fe2O3 and Al2O3. To determine the content of ferric oxide was be done by spectrofotometric at wavenglength 520 nm. From the result of analysis showed that the content of aluminium oksida for the first treatment wa 25,1423 % aluminium oxide, the second treatment was 27,1438 % aluminium oxide, the third treatment was 24,1461 % aluminium oxide.