Water Disinfection Using Silver/Copper- Immobilized Adsorbents Prepared from Waste Materials

• Main Authors: Chin-Hau Gung, 宮欽浩
• Other Authors: 孫幸宜
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/09519246927773304151

碩士 === 國立中興大學 === 化學工程學系所 === 102 === In this study,use agricultural waste (defatted rice bran, water bamboo husk) as the substrate, and then use it to adsorb silver and copper ions to fixed on agricultural waste, and applied to the water disinfection. Then plastic waste (Styrofoam, plastic bottles) for the polymer substrate for Mixed Matrix Membrane, mixing 20-30 wt% of agricultural waste particles with polymer to prepare pore membrane. After the adsorption of silver ion, used in water disinfection process, hoping use membrane can get lower operating pressure drop (more saving) compared with packed bed in water disinfection process. The results of adsorption, the adsorption capacity of defatted rice bran and water bamboo husk particles for silver were 11.7 and 18.5 mg / g. respectively, for adsorption capacity of copper were 9.2 and 32.9 mg / g. The results of SEM , after batch adsorption process , surface of DRB-Ag+ and WBH-Ag+ is covered by silver. The results of TEM, the size of metallic silver in particle are about 10-50 nm. Experimental results show that the batch disinfection, optimal conditions of antibacterial particles is 0.016 g of DRB-Ag+ (containing silver 0.185 mg) and 0.01 g of WBH-Ag+ (containing silver 0.185 mg) in 2 hours can contain E. coli (E. coli) 2.6 x 105 CFU / mL completely kill, sterilization rate of 99%. Current sterilization procedures that result in two PS / DRB-Ag+ (silver 0.19 mg) flow bactericidal test films, the flow rate of 0.5 mL / min under conditions to 40 mL and the concentration of E.coli containing 2x105 CFU / mL bacteria solution flows through the membrane, the bacteria can be completely killed within E.coli.