Removal of organic compounds in wastewater from TNT manufacturing process by TiO2/US. method

• Main Authors: Yan-Liang Huang, 黃顏良
• Other Authors: Wen-Shing Chen
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/hrtfcz

碩士 === 國立雲林科技大學 === 化學工程與材料工程研究所 === 96 === The objective of this study is to handle organic compounds of waste water from TNT manufacturing process by TiO2/US . The experiment content is remove organic compounds by use sonicator and TiO2 photocatalyst. The results show that removing organic compounds , increasing intensity of ultrasound can help removal of organic compounds, However, it must have an optimum value. Excessive energy will cause the opposite result and restrain the effect of removal. The TiO2 catalyst on the sonocatalytic degradation of organic compounds were considered in the case: Increasing the amount of TiO2 catalyst will enhance the de- gradation . Increasing the pH values will decrease the degradation rate, because organic compounds slowly become ions which is difficultly evaporated into bubbles in solution. Increasing the temperature of solution system will reduce the greatest temperature and greatest pressure of collapse of cavity, the factors relatively to effect to difficultly produce hydroxyl radicals and positive holes, so that difficult the degradation. Adding the oxygen can help removal of organic compounds , because of affording large bubbles and hydroxyl radicals. Moreover, sonocatalystic per- formance of mixed anatase and rutile biphase titania catalysts was the degradation of organic pollutants also increases with the increase rutile phase.