化学—生物两段浸出锰烟尘中的锰  

Chemical-biological two-stage leaching of manganese from manganese fume and dust

作　　者：崔延超 田炳阳 李志华 褚会超 王旭 王佳 辛宝平 CUI Yanchao;TIAN Bingyang;LI Zhihua;CHU Huichao;WANG Xu;WANG Jia;XIN Baoping(School of Environment and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044;School of Materials,Beijing Institute of Technology,Beijing 100081)

机构地区：[1]北京建筑大学环境与能源工程学院,北京100044 [2]北京理工大学材料学院,北京100081

出　　处：《环境污染与防治》2023年第6期791-795,共5页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.21777007)。

摘　　要：单一的化学沥浸或者生物沥浸达不到目标金属高效浸出的效果,所以需要考虑两种工艺结合的方式。第一段用化学酸对锰烟尘进行化学沥浸,然后第二段用生物酸对化学沥浸渣进行生物沥浸,对比原样和沥浸渣中锰的赋存形态和浸出液中锰的含量,得到化学—生物沥浸的机理。结果表明:固液比10 g∶100 mL、pH 0.8、温度35℃、转速135 r/min的条件下,第一段化学沥浸锰的浸出率为67.36%;第二段生物沥浸锰的浸出率为22.45%,化学—生物两段整体锰浸出率为89.81%。A single chemical leaching or biological leaching can’t achieve the goal of efficient leaching of the target metal,so it is necessary to consider the combination of the two processes.In the first stage,manganese fume and dust was chemically leached by chemical acid,and then the chemical leaching residue was bioleached by biological acid in the second stage.The mechanism of coupled chemical-biological leaching was obtained by comparing the chemical form of manganese in the original sample and the residue after leaching and the content of manganese in the leaching solution.The results showed that with a solid-liquid ratio of 10 g∶100 mL,pH of 0.8,temperature of 35℃and rotational speed of 135 r/min,the leaching rate of the first stage chemical leaching was 67.36%;the leaching rate of the second stage bioleaching was 22.45%,and the overall leaching rate of the coupled chemical-biological method was 89.81%.

关 键 词：涉重危废 锰烟尘 化学沥浸 生物沥浸 两段浸出 浸出率 

分 类 号：X757[环境科学与工程—环境工程]