PENINGKATAN KUALITAS ZAT WARNA BIRU HASIL EKSTRAKSI DAUN TARUM SECARA ADSORPSI

Abstract

Tarum leaves are blue or indigo-producing plants which are used by the Kajang Tribe as a dye on the sarongsand headgear. Extraction of dyes from tarum leaves in 2015 and 2017 has been carried out but the results obtained stillcontain other dyes indicated by greenish and reddish colors. Increased levels of indigo extracted from tarum leaves usingthe adsorption method with two types of adorbents namely limestone and kitchen ash. The study of research variables inthe form of variations in weight of the adsorbent were 0, 5, 10, 15, 20, 25 and 30 with an operating time of 1.5 hours at30oC. The adsorption process was carried out by piping 200 ml of tarum leaf extract into erlemyer and then adding theadsorbent according to the research variable. The adsorption results then measured absorbance using uv-vis then the datawas processed and calculated the adsorption capacity of limestone and kitchen ash using the equation Langmuer. Thehighest level will be applied to dyeing a white cloth or handkerchief. Adsorption increased the quality of indigoextraction and adsorption capacity using limestone 75.257 mg / g and 36.130 mg / g for kitchen ash. The highestpercentage of absorption in 30 grams of adsorbent was 83% which was applied as a white cloth dye.PENINGKATAN KUALITAS ZAT WARNA BIRU HASIL EKSTRAKSI DAUN TARUMSECARA ADSORPSI