食品科学2012，Vol.33Issue(1)：39-43,5.
TiO_2-超声协同降解水中乙酰甲胺磷的研究
Synergistic Degradation of Acephate Aqueous Solution by Ultrasonic and Titanium Dioxide
摘要
Abstract
Titanium dioxide was prepared and used to explore its synergistic effect with ultrasonic on degradation of acephate aqueous solution at low concentration.The degradation rate of acephate was investigated with respect to temperature,pH,ultrasonic intensity,titanium dioxide amount and various combinations of ultrasonic intensity and titanium dioxide amount.The degradation rate of acephate increased as the ultrasonic treatment time increased up to 1 h and the temperature increased from 5 ℃ to 20 ℃.An acidic environment of pH 3 was favorable to the degradation of acephate.Within a certain range,titanium dioxide amount was positively related to the degradation rate of acephate.An ultrasonic intensity of 40 W/cm2 was conducive to increasing the degradation rate of acephate.Moreover,ultrasonic and titanium dioxide could synergistically degrade acephate.A degradation rate of 78.3% was observed for 2 mg/L acephate aqueous solution at 20 ℃ and pH 3.0 with the addition of titanium dioxide at 0.6 g/L after 50 min ultrasonic treatment at a frequency of 25 kHz and an intensity of 40 W/cm2.关键词
TiO2/超声波/乙酰甲胺磷/降解Key words
titanium dioxide/ultrasonic/acephate/degradation分类
资源环境引用本文复制引用
雷磊,王欣,殷晓梅..TiO_2-超声协同降解水中乙酰甲胺磷的研究[J].食品科学,2012,33(1):39-43,5.基金项目
国家自然科学基金项目 （）
上海市启明星项目 （）
上海市自然科学基金项目 （）
教育部新世纪优秀人才支持计划项目 （）
上海市教委重点学科项目 （）
上海市东方学者资助项目 （）
上海市研究生创新基金项目 （）
