摘要
开展了MnO2化学氧化去除制革污泥中Cr(Ⅲ)的研究.结果表明,pH为4.0时MnO2处理污泥16h,Cr(Ⅲ)的溶出率达到90%以上(污泥中总Cr的原始浓度为6548mg·kg-1),但pH>6.0时MnO2基本不能去除污泥中的Cr(Ⅲ);处理温度升高、MnO2加入量的增大有利于Cr(Ⅲ)的去除.
The chemical oxidation removal of Cr(Ⅲ) from tannery sludge by MnO2 has been researched.The results showed that more than 90% of Cr(Ⅲ) in the tannery sludge(the initial concentration of total Cr was 6548 mg·kg^-1) was reout by treating with MnO2at pH=4.0 for 16 h.But there was almost no Cr(Ⅲ) removal from tannery sludge by MnO2 when pH was larger than 6.0.High temperature and MnO2dose are beneficial to removing Cr(Ⅲ)from tannery sludge.
出处
《环境化学》
CAS
CSCD
北大核心
2010年第4期685-689,共5页
Environmental Chemistry
关键词
制革污泥
氧化
铬
MNO2
tannery sludge
oxidation
chromium
MnO2.