%0 Journal Article
%T Study on heavy metals leaching toxicity of fly ash and bottom slag<br>油页岩循环流化床锅炉底渣和飞灰中重金属元素浸出毒性研究
%A Bai Jingru
%A Wang Qing
%A Chen Yan
%A Xu Zhaohui
%A Chen Dengfeng
%A <br>柏静儒
%A 王擎
%A 陈艳
%A 徐朝辉
%A 陈登峰
%J 环境工程学报
%D 2010
%I 
%X The mode of the occurrence and the leaching characteristics of heavy metals Cr, Cu, Pb and Zn in bottom slag and fly ash of oil shale from circulating fluidized bed boiler of 65 t/h were investigated using sequential chemical extraction and leaching experiment. The results of sequential chemical extraction study indicated that heavy metals had similar content and occurrence in bottom slag and fly ash. Heavy metals mainly existed in sulfide and residue states. The potential leaching capacity of the elements were: Pb>Cr>Cu>Zn, moreover, the heavy metals in fly ash were higher than that in bottom slag. The results of leaching study indicated that the occurrence of elements was decisive for leaching capacity. pH of leaching solution had dissimilar effect on elements leaching characteristics. The leaching capacities of Cr and Pb exceeded the national standard for surface water and drinking water.
%K oil shale fly ash and bottom slag
%K heavy metal
%K mode of occurrence
%K leaching character<br>油页岩飞灰和底渣
%K 重金属
%K 赋存状态
%K 浸出特性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=3AC8399902D357E5EBD49F766DBB379B&yid=140ECF96957D60B2&vid=E158A972A605785F&iid=5D311CA918CA9A03&sid=22AA0D3D54DBF917&eid=8E33296F097354F4&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=0