TY - JOUR
T1 - Wastewater treatment and fouling control in an electro algae-activated sludge membrane bioreactor
AU - Corpuz, Mary Vermi Aizza
AU - Borea, Laura
AU - Senatore, Vincenzo
AU - Castrogiovanni, Fabiano
AU - Buonerba, Antonio
AU - Oliva, Giuseppina
AU - Ballesteros, Florencio
AU - Zarra, Tiziano
AU - Belgiorno, Vincenzo
AU - Choo, Kwang Ho
AU - Hasan, Shadi W.
AU - Naddeo, Vincenzo
N1 - Funding Information:
The authors are grateful for funding to i) University of Salerno (FARB grants: ORSA11328 , 300393FRB18NADDE and 300393FRB17NADDE ); ii) Italian Ministry of Foreign Affairs and International Cooperation and Department of Science and Technology and Indian Ministry of Science and Technology , (project n. IN17GR09/INT/Italy/P-17/2016 ); iii) University of the Philippines-Diliman and Engineering Research and Development for Technology (ERDT) through the Department of Science and Technology, Philippines (Ph.D. Scholarship Grant and Sandwich Program awarded to M, V. A. Corpuz); iv) Italian Ministero dell'Università e della Ricerca MIUR (PhD Scholarship “Innovative research doctorates with industrial characterization” PON R&I 2014-2020 awarded to F. Castrogiovanni).
Funding Information:
The authors express their sincere gratitude to Paolo Napodano for the technical support he provided all throughout the experiment and to SUEZ WTS Italy s.r.l for the donation of the membrane modules used in the laboratory scale reactors. The authors are grateful for funding to i) University of Salerno (FARB grants: ORSA11328, 300393FRB18NADDE and 300393FRB17NADDE); ii) Italian Ministry of Foreign Affairs and International Cooperation and Department of Science and Technology and Indian Ministry of Science and Technology, (project n. IN17GR09/INT/Italy/P-17/2016); iii) University of the Philippines-Diliman and Engineering Research and Development for Technology (ERDT) through the Department of Science and Technology, Philippines (Ph.D. Scholarship Grant and Sandwich Program awarded to M, V. A. Corpuz); iv) Italian Ministero dell'Universit? e della Ricerca MIUR (PhD Scholarship ?Innovative research doctorates with industrial characterization? PON R&I 2014-2020 awarded to F. Castrogiovanni).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/9/10
Y1 - 2021/9/10
N2 - The effect of addition of algae to activated sludge as active biomass in membrane bioreactors (MBRs) and electro-MBRs (e-MBRs) for wastewater remediation was examined in this study. The performances of Algae-Activated Sludge Membrane Bioreactor (AAS-MBR) and electro Algae-Activated Sludge Membrane Bioreactor (e-AAS-MBR) were compared to those observed in conventional MBR and e-MBR, which were previously reported and utilized activated sludge as biomass. The effect of application of electric field was also examined by the comparison of performances of e-AAS-MBR and AAS-MBR. Similar chemical oxygen demand (COD) reduction efficiencies of AAS-MBR, e-AAS-MBR, MBR, and e-MBR (98.35 ± 0.35%, 99.12 ± 0.08%, 97.70 ± 1.10%, and 98.10 ± 1.70%, respectively) were observed. The effect of the algae-activated sludge system was significantly higher in the nutrient removals. Ammoniacal nitrogen (NH3−N) removal efficiencies of AAS-MBR and e-AAS-MBR were higher by 43.89% and 26.61% than in the conventional MBR and e-MBR, respectively. Phosphate phosphorous (PO43−-P) removals were also higher in AAS-MBR and e-AAS-MBR by 6.43% and 2.66% than those in conventional MBR and e-MBR. Membrane fouling rates in AAS-MBR and e-AAS-MBR were lower by 57.30% and 61.95% than in MBR and e-MBR, respectively. Lower concentrations of fouling substances were also observed in the reactors containing algae-activated sludge biomass. Results revealed that addition of algae improved nutrient removal and membrane fouling mitigation. The study also highlighted that the application of electric field in the e-AAS-MBR enhanced organic contaminants and nutrients removal, and fouling rate reduction.
AB - The effect of addition of algae to activated sludge as active biomass in membrane bioreactors (MBRs) and electro-MBRs (e-MBRs) for wastewater remediation was examined in this study. The performances of Algae-Activated Sludge Membrane Bioreactor (AAS-MBR) and electro Algae-Activated Sludge Membrane Bioreactor (e-AAS-MBR) were compared to those observed in conventional MBR and e-MBR, which were previously reported and utilized activated sludge as biomass. The effect of application of electric field was also examined by the comparison of performances of e-AAS-MBR and AAS-MBR. Similar chemical oxygen demand (COD) reduction efficiencies of AAS-MBR, e-AAS-MBR, MBR, and e-MBR (98.35 ± 0.35%, 99.12 ± 0.08%, 97.70 ± 1.10%, and 98.10 ± 1.70%, respectively) were observed. The effect of the algae-activated sludge system was significantly higher in the nutrient removals. Ammoniacal nitrogen (NH3−N) removal efficiencies of AAS-MBR and e-AAS-MBR were higher by 43.89% and 26.61% than in the conventional MBR and e-MBR, respectively. Phosphate phosphorous (PO43−-P) removals were also higher in AAS-MBR and e-AAS-MBR by 6.43% and 2.66% than those in conventional MBR and e-MBR. Membrane fouling rates in AAS-MBR and e-AAS-MBR were lower by 57.30% and 61.95% than in MBR and e-MBR, respectively. Lower concentrations of fouling substances were also observed in the reactors containing algae-activated sludge biomass. Results revealed that addition of algae improved nutrient removal and membrane fouling mitigation. The study also highlighted that the application of electric field in the e-AAS-MBR enhanced organic contaminants and nutrients removal, and fouling rate reduction.
KW - Activated sludge
KW - Algae
KW - Electrochemical
KW - Fouling
KW - Membrane bioreactor
KW - Wastewater
UR - http://www.scopus.com/inward/record.url?scp=85105321860&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2021.147475
DO - 10.1016/j.scitotenv.2021.147475
M3 - Article
C2 - 33971601
AN - SCOPUS:85105321860
SN - 0048-9697
VL - 786
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 147475
ER -
