Penggunaan Karbon Aktif terhadap Pemurnian Gliserin Berdasarkan Metode Analisa Uji Tollens,Uji Benedict dan Lonza di PT.Ecogreen Oleochemicals Medan Plant

Abstract

Glycerin is obtained from the hydrolysis of palm kernel oil using pressure of 50- 56 bar and temperature 250 – 260°C. Glycerin is a chemical product used in the cosmetics industry.Determination of reducing agent contained in the glycerin (refined glycerine) is one parameter that must be analyzed. The presence of reducing agent caused a decrease of the purity glycerine because of that the glycerin is can not be marketed. The analysis of reducing agent contained in the glycerin has been done in the PT. Ecogreen Oleochemical Medan Plant. The analysis was made using reagent tollens reagent, benedict and Lonza where a glycerin visual examination using a spectrophotometer DR. Lange at a wavelength of 400 nm. Tests started on 10 February 2013 –until 13 February 2013 with results reporting in reducing substance was negative, where as on Lonza is 10 to a maximum of 100 APHA. This indicates that the purity of glycerin to the reducing agent is analyzed by the parameters have been determined, so it can be considered in turn activated carbon.