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THE EFFECTIVENESS OF THATCH SCREWPINE LEAVES (Pandanus tectorius) FROM CIKALONG BEACH COASTAL AS BIOSORBENT OF USED COOKING OIL. Cooking oil that has been used for frying several times will be toxic if consumed continuously for a long time. So it needs substances that can adsorb toxic compounds. The high cellulose content in thatch screwpine leaves can be used as a biosorbent to improve the quality of used cooking oil. The purpose of this study was to determine the effectiveness of thatch screwpine leaves and changes in functional groups and morphological structures before and after activation. The thatch screwpine leaves powder was activated using 1.5N NaOH for 24 hours then rinsed with aquadest until the pH was neutral and dried to produce a fine powder. The results of the activated biosorbent organoleptic test were able to improve in terms of color and odor of used cooking oil. The results of testing the quality of used cooking oil based on SNI showed that the biggest decrease in water content was 97.70% efficiency, the largest decrease in free fatty acid content was 90.67% efficiency and the largest decrease in peroxide number was 82.95% efficiency. The results of the FTIR analysis of biosorbents after being activated were changed compared to before being activated, namely by shifting the -CH , -OH wave numbers and the loss of the C = C lignin group uptake which shows absorption shifts indicating a change in nature after the activation process. The results of the SEM analysis of biosorbents that have been activated, the pores are more open than the powder before activation. The application of the use of thatch screwpine (Pandanus tectorius) leaves biosorbent in improving the quality of used cooking oil by 80 90% was carried out by adding 15 gs of biosorbent to 100 mL of used cooking oil with stirring time of 60 minutes.

EFEKTIVITAS DAUN PANDAN LAUT BERDURI (Pandanus tectorius) DARI PESISIR PANTAI CIKALONG SEBAGAI BIOSORBEN MINYAK JELANTAH