(1) The College of Life Science and Technology, Huazhong University of Science and Technology (HUST), Wuhan, 430074, China
Abstract:
A repeated batch operation is developed for the treatment of alkaline pulp black liquor, through a process of biological acidification
precipitation of lignin using brown rot fungus Fomitopsis sp. IMER2. The results showed that COD and color removal of black liquor was dependent on the biomass concentration, pH decrease
and initial COD. Based on these results, the repeated batch process was successfully carried out 12 times over 36 days in
an air bubble column bioreactor. The average reduction of COD and color was approximately 40% and 70%, respectively.