摘要
本文利用钢铁废弃物OG泥作为降低苯并[a]蒽(BaA)污染土壤热脱附能耗的增效材料,研究了温度、时间和OG泥添加量对热脱附效率的影响,探究了热脱附动力学,运用响应面分析优化热脱附参数。结果表明,OG泥能通过降低热脱附温度和缩短停留时间协同热脱附修复土壤中的BaA,其最佳添加量为5%以内。优化后的最优参数条件:OG泥添加量为3.6%,温度为288℃,停留时间为18min,污染土壤中BaA热脱附去除效率可以达到96.32%。
In this paper,the iron and steel waste og mud is used as a synergistic material to reduce the energy consumption of thermal desorption of benzo[a]anthracene(BaA)contaminated soil.The effects of temperature,time and the amount of og mud on the the rmal desorption efficiency are studied,the thermal de sorption kinetics is explore d,and the thermal de sorption paramete rs are optimized by response surface analysis.The results showed that og mud could synergistically repair baa in soil by reducing the thermal desorption temperature and shortening the residence time,and the optimal addition amount was less than 5%.The optimal parameter conditions after optimization:the addition amount of og mud is 3.6%,the temperature is 288℃,and the re sidence time is 18 min.the removal efficiency of baa thermal desorption in contaminated soil can reach 96.32%.
作者
邢绍文
刘梦婷
王彦人
XING Shao-wen;LIU Meng-ting;WANG Yan-ren
基金
上海市科学技术委员会重点项目“有机污染土壤热脱附机制研究与增效材料研发”(19DZ1205202)。
关键词
热脱附
苯并[a]蒽
OG泥
thermal desorption
benzo[a]anthracene
OG mud
