%0 Journal Article
%T Study on Vitrification of Simulated Medical Wastes by Thermal Plasma<br>热等离子体熔融固化模拟医疗废物的研究
%A ZHANG Lu
%A YAN Jian-hu
%A DU Chang-ming
%A LU Sheng-yong
%A LI Xiao-dong
%A <br>张璐
%A 严建华
%A 杜长明
%A 陆胜勇
%A 李晓东
%J 环境科学
%D 2012
%I 
%X The simulated medical wastes with different feed compositions were vitrified in a thermal plasma reactor, the core of which was a DC double anode plasma torch.The purpose of this study was directed towards the mobility characteristics of heavy metals contained during the vitrification process, the leaching behavior of heavy metals in the vitrified slag and the effectiveness of vitrification were investigated. Results indicated that the morphology of vitrified slag was amorphous state which showed the mostly glassy slag of SiO2 and the microstructure of slag was very compact. This thermal plasma could be effectively utilized for encapsulation of heavy metal in wastes, as the vitrification ratio was between 68.5%-89.4%. Toxicity characteristic leaching procedure results showed that the slag had an excellent resistance against leaching of heavy metal ions. Except that the leaching concentration of Cd was lower than the detecting limit, those of Ni, Cr, Zn, Cu and Pb were much lower than that specified in relevant national standards. These results indicate that, with the proper feed compositions, the thermal plasma disposition is an alternative technology with a highly efficiency to dispose medical wastes.
%K thermal plasma
%K vitrification
%K simulated medical wastes
%K heavy metal
%K toxicity characteristic leaching procedure<br>热等离子体
%K 玻璃固化
%K 模拟医疗废物
%K 重金属
%K 毒性浸出试验
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=1D8FDF1D949EE4BA284F6A8212150F42&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=B31275AF3241DB2D&sid=1BF0B9E7EC703940&eid=937C40E5E983B5E8&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=22