Surface Treatment of Bio-cellulose and its Oil/Water Separation Application

• Main Authors: PENG, YI-HSUAN, 彭怡萱
• Other Authors: WU, SHU YII
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/68tn8w

碩士 === 逢甲大學 === 綠色能源科技碩士學位學程 === 107 === The wastewater in the palm oil industry is called palm oil mill effluent (POME), which contains 1 to 3% of oil. How to recover oil from palm oil plant wastewater is an important ecological environment and resource recovery problem. Therefore, in recent years, many studies have used oil/water separation methods to achieve this goal and create a sustainable environment, especially biodegradable oil/water separation membranes are more attracted to this sustainable goal. In this study, biodegradable bio-cellulose (BC) was used as the base material, and the self-synthesized silicon dioxide was modified by 1,1,1,3,3,3-hexamethyl disilazane (HMDS) to prepare seven modified silicon dioxide, which was then coated on BC, and the self-synthesized bio-cellulose-titanium dioxide (BC-TiO2) was modified with 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane (PTES) to prepare five modified ratios of BC-TiO2. It is an oil/water separation membrane with both hydrophobic and lipophilic properties, and environmentally friendly and discusses the effect of different modified ratios on oil adsorption capacity. The modified bio-cellulose-silicon dioxide (BC-SiO2) fraction, when added to TEOS: HMDS molar ratio of 1:1 is the smallest particle size, uniform distribution, and maximum water contact angle and oil absorption ratio, respectively 151.00 ± 2.85° and 11.23 ± 0.16. Also, the modified BC-TiO2 fraction, when added to 0.5 wt.% PTES, has the best dispersibility, uniform distribution, and maximum water contact angle and oil absorption ratio, respectively 152.70 ± 2.03° and 25.20 ± 0.32. Based on the comprehensive analysis results, the optimal conditions for the oil/water separation membrane were added to 0.5 wt.% PTES modified BC-TiO2. Then, the oil/water separation test and recovery were carried out, and the separation efficiency was 84.50%. After 5 repeated cycles, the oil absorption rate still reaches averaged 24.97, and show no significant change that means fully reusable.