title: Nutrient utilization and oxygen production by Chlorella vulgaris in a hybrid membrane bioreactor and algal membrane photobioreactor system.
abstract: This work studied oxygen production and nutrient utilization by Chlorella vulgaris at different organic/inorganic carbon (OC/IC) and ammonium/nitrate (NH4+-N/NO3--N) ratios to design a hybrid aerobic membrane bioreactor (MBR) and membrane photobioreactor (MPBR) system. Specific oxygen production by C. vulgaris was enough to support the MBR if high growth is accomplished. Nearly 100% removal (or utilization) of PO43--P and IC was achieved under all conditions tested. Optimal growth was achieved at mixotrophic carbon conditions (0.353d-1) and the highest NH4+-N concentration (0.357d-1), with preferable NH4+-N utilization rather than NO3--N. The results indicate the potential of alternative process designs to treat domestic wastewater by coupling the hybrid MBR - MPBR systems.
authors.affiliation: Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
authors.forename: Yasmeen
authors.initials: Y
authors.lastname: Najm
authors.affiliation: Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia. Electronic address: Sanghyun.Jeong@kaust.edu.sa.
authors.forename: Sanghyun
authors.initials: S
authors.lastname: Jeong
authors.affiliation: Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
authors.forename: TorOve
authors.initials: T
authors.lastname: Leiknes
mesh_terms: D019149:Bioreactors; D048408:Chlorella vulgaris; D008567:Membranes, Artificial; D010100:Oxygen; D058433:Photobioreactors; D062065:Wastewater
chemical_list: D008567:Membranes, Artificial; D010100:Oxygen; D062065:Wastewater
keywords: Algae; Membrane bioreactor; Membrane photobioreactor; Nutrients; Specific oxygen production