Effect of Temperature on Bioleaching of Cr from Tannery Sludge
温度对制革污泥的生物淋滤除铬效果的影响

Bioleaching processes are normally sensitive to temperature fluctuations. Shake flask experiments were conducted to examine these effects in the temperature range of 12-36 degrees C. The results showed that there was an increase in the rates of pH reduction and Cr solubilization efficiency with the increase of the temperature of bioleaching reaction. After 8 days of bacterial leaching treatment, almost 100% of Cr could be leached from tannery sludge at the temperature of 28 degrees C and 36 degrees C. The temperature of 28 degrees C is recommended to be employed in the future realistic operation.