Integration of Specific Aeration Demand (SAD) into Flux-Step Test for Submerged Membrane Bioreactor

Membranes, Journal Year: 2025, Volume and Issue: 15(4), P. 111 - 111

Published: April 3, 2025

This study proposes a novel methodology to assess fouling that complements the flux-step test (FST) by integrating aeration-step tests (ASTs) optimise specific aeration demand (SADm) for ultrafiltration hollow-fibre (UF-HF) submerged membranes in membrane bioreactor (MBR) configurations. Three with distinct manufacturing processes—non-thermal-induced phase separation (NIPS) and thermal-induced (TIPS)—were evaluated under continuous intermittent aeration. The AST revealed critical SADm has range of 0.1–0.5 m3·m−2·h−1 0.1–0.2 NIPS homogeneous structures were less prone aeration, while TIPS heterogeneous structure exhibited better recovery reflecting dynamics. Findings indicate FST alone does not fully represent operational conditions, as efficiency is linked mode. By combining ASTs, our approach enables tailored control strategies, reducing energy consumption improving MBR performance. These insights are advancing toward energy-efficient wastewater treatment technologies.

Language: Английский

---

Maximizing C-phycocyanin purification efficiency from Spirulina: A synergistic strategy combining CaCl2 precipitation and membrane diafiltration

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131575 - 131575

Published: Jan. 11, 2025

Language: Английский

---

Simulation of Biofouling Caused by Bacillus halotolerans MCC1 on FeNP-Coated RO Membranes

Processes, Journal Year: 2025, Volume and Issue: 13(5), P. 1422 - 1422

Published: May 7, 2025

Reverse osmosis (RO) desalination technology offers a promising solution for mitigating water scarcity. However, one of the major challenges faced by RO membranes is biofouling, which significantly increases costs. Traditional simulation models often overlook environmental variability and do not incorporate effects membrane-surface modifications. This paper develops bacterial growth model prediction seawater performance, applicable to commercial membranes, can be either uncoated or coated with iron nanoparticles (FeNPs nZVI). FeNPs were selected due their known antimicrobial properties potential mitigate biofilm formation. The native bacterium Bacillus halotolerans MCC1 was used as biofouling bacterium. Growth kinetics determined at different temperatures (from 26 50 °C) pH values 4 10) obtain parameters. Microbial on modeled using Monod equation. performance evaluated in terms hydraulic resistance permeate flux under clean biofouled conditions. validated data obtained laboratory scale. Bacteria grew faster 42 °C 10. had more significant effect than temperature rate. FeNP-coated exhibited lower maintained higher long-term membrane. modeling approach useful improving monitoring feed parameters assessing operational conditions minimum membranes. In addition, it introduces novel integration membrane coating effects, offering predictive tool support decisions improved performance.

Language: Английский

---

Concentration of phenolic compounds from an orange peel waste extract using a combination of ultrafiltration and forward osmosis

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 131228 - 131228

Published: Dec. 1, 2024

Language: Английский

---

Occurrence characteristics, removal efficiencies and potential health risks of typical viruses in rural domestic sewage: A review

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 69, P. 106611 - 106611

Published: Nov. 30, 2024

Language: Английский

---