Effect of pH and biomass concentration on the performance of membrane photobioreactor and nutrient removal from pulp and paper wastewater
Volume Title: 1
1Department of Chemical Engineering, Science and Research Branch, Islamic Azad University
2Department of Chemical Engineering, Science and Research Branch, Islamic Azad University,
3Department of Chemical Engineering, Science and Research branch, Islamic Azad University, Tehran, Iran.
With a membrane photobioreactor (MPBR) considered as a wastewater treatment process, a good understanding and adjusting of operating conditions, particularly pH values and microalga biomass concentrations, is essential for system implementation. In this experiment, Chlorella vulgaris was cultivated within and the MPBR under different operating conditions to remove nitrate and phosphate from pulp and paper wastewater. The result showed that the pH value of 7 with initial biomass concentration of 1 mg/L removed the nitrate and phosphate by 58% and 41%, respectively. However, pH values of 10 and 4 were not beneficial for photosynthesis activity and nutrient uptake.