ADSORPTION 3-MONOCHLOROPROPANE-1,2-DIOL USING ADSORBENT COMPOSITE BASED ON ZEOLITE AND CARBON

• Main Author: Rahmania, Sabila
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/69213
• Institution: Institut Teknologi Bandung

Cooking oil, especially palm oil, is one of the regularly consumed food products. Palm oil for cooking is produced from crude palm oil (CPO) treated with refining process consisting of degumming, bleaching, and deodorization processes to form refined, bleached, and deodorized palm oil (RBDPO). RBDPO will then go through a fractionation process to form olein, which is commonly used as cooking oil. Process palm oil refining uses high temperature which can induce the formation of 3-cloropropane-1,2 diol (3-MCPD) that is potentially harmful to human health. This study aims to remove 3- MCPD through adsorption using zeolite-activated carbon-chitosan composite. The said composite is created by combining natural zeolite mordenite, activated carbon from coconut shell, and chitosan from shrimp shells. Zeolite and carbon were pre-treated with acid-washing using HNO3. The zeolite-activated carbon-chitosan was made according to the method adapted from Ngah et. al. (2012) where zeolite, activated carbon, and chitosan is mixed in solution of acetic acid, which will then go through a drying process. The adsorption process will be carried out on adsorbate (3-MCPD) concentration 20, 30, and 40 ppm using adsorbent 1:1. The 3-MCPD removal using adsorbent with zeolite to activated carbon ratio of 1:1 was 68,52%. Based on isotherm model Dubinin- Radushkevich, the adsorption saturation capacity was 3,27 mg/g and the activation energy of 3-MCPD was 265,19 J/mol. Composite composition variation is analyzed by zeolite to activated carbon ratio of 1:0, 2:1, 1:1, 1:2, 0:1 and characterized by measuring the KTK and pHPZC. The adsorbent with zeolite to activated carbon ratio of 0:1 show a good ability to reduce 3-MCPD adsorbent due to high removal 72,12%