%0 Journal Article
%T Thermal Treatment Behavior of PCDD/Fs on the Fly Ash from Medical Waste Incineration<br>医疗废物焚烧飞灰二英的热处理研究
%A PENG Zheng
%A DING Qiong
%A JIANG Chen
%A GAO Xin-hua
%A YAN Jian-hua
%A <br>彭政
%A 丁琼
%A 姜晨
%A 高新华
%A 严建华
%J 环境科学
%D 2010
%I 
%X PCDD/Fs formation distribution in gas phase and solid phase of medical waste incineration fly ash under both the flowing nitrogen and static air condition were studied within temperature range of 200-450 degrees C. Under the flowing nitrogen, PCDD/Fs in solid phase increased with temperature increase, which reached the maximum concentration at 350 degrees C, both the TEQ and total concentration increased 46.0% and 26.0% respectively of original concentration, then, which decreased with temperature's rising, reaching the lowest level at 450 degrees C, of which 86.8% and 80.5% respectively in turn removed. Under the static air, the maximum concentration in solid phase occurred at 250 degrees C, both the TEQ and total concentration increased 20.7% and 28.7% respectively of original concentration, then, which decreased with temperature increase, reaching the lowest level at 450 degrees C, of which 99.5% and 99.5% respectively in turn removed. There were small generation of PCDD/Fs in gas phase, which took only 0.11%-2.16% of the total quantity of PCDD/Fs in both gas phase and solid phase. The optimal conditions for thermal treatment in this study were under the static air at temperature of 450 degrees C in duration of 1 h. The mechanism of destruction played the main role in the thermal treatment, while dechlorination and desorption acted as minor role in this study.
%K medical waste incineration
%K fly ash
%K PCDD/Fs
%K thermal treatment<br>医疗废物焚烧
%K 飞灰
%K 二(噁)英
%K 热处理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=F98F7A87C177C011B8ACA1B13AD3E758&yid=140ECF96957D60B2&vid=4AD960B5AD2D111A&iid=5D311CA918CA9A03&sid=C7EA1836BA194C9B&eid=D4DC9CE6E809E937&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=0