Jankowska, Katarzyna and Domingo-Félez, Carlos and Andres Prado-Rubio, Oscar and Skiadas, Ioannis V. and Woodley, John M. and Pinelo, Manuel (2024) Effect of backwash as a strategy for biofouling control in the submerged ceramic membrane bioreactor for high-density cultivations: Process optimization and fouling mechanism at pilot scale. Separation and Purification Technology, 338: 126428. ISSN 1383-5866
AI Summary:
This study investigated backwash as a method for mitigating biofouling in a submerged ceramic membrane bioreactor. The results showed that backwash can effectively recover up to 100% of the initial flux after fouling.AI Topics:
Submerged membrane bioreactors are effective tools for synergistic production of valuable compounds, cell retention in the bioreactor, and separation of products from the reaction solution. However, membrane fouling is a problem that impairs efficiency of processes involving submerged membrane bioreactors. One of the mechanical methods for efficient fouling mitigation is backwash. Therefore, this study investigated backwash as a method for mitigating biofouling in a submerged ceramic membrane bioreactor, specifically in terms of separation of Saccharomyces cerevisiae from the suspension. To identify the key factors affecting the dynamic flux and their interactions, a Fractional Factorial Design (FFD) was employed based on the key operating variables (2 levels, 5 variables). The average flux model showed a dependency on the flow rate of backwash, time between backwash cycles, backwash duration, cell concentration, and separation process time (adjusted R2 = 0.99). Furthermore, the effect of backwash on flux recovery was assessed in comparison to separation processes without backwash. It was found that after the application of backwash, up to 100 % of the initial flux could be recovered. In contrast, only around 20 % of the initial flux could be maintained after the process without backwash. The optimized conditions of backwash were found to be a flow rate of backwash at 1500 mL min−1, time between backwash cycles 5 min, backwash duration 5 sec, cell concentration 20 g dry weight per liter, and separation process time 0.5 h. The mechanism of membrane fouling was determined to be the deposition of yeast cells on the membrane surface and the blocking of pores inside the membrane by sorbitan monostearate as a reagent present in the yeast suspension.
Jankowska, Katarzyna
Author
Jankowska, Katarzyna and Domingo-Félez, Carlos and Andres Prado-Rubio, Oscar and Skiadas, Ioannis V. and Woodley, John M. and Pinelo, Manuel (2024) Effect of backwash as a strategy for biofouling control in the submerged ceramic membrane bioreactor for high-density cultivations: Process optimization and fouling mechanism at pilot scale. Separation and Purification Technology, 338: 126428. ISSN 1383-5866
See full publications listDomingo-Félez, Carlos
Author
Ye, Jinyu and Mark Jensen, Marlene and Goonesekera, Estelle M. and Yu, Ran and Smets, Barth F. and Valverde-Pérez, Borja and Domingo-Felez, Carlos (2024) Denitrifying communities enriched with mixed nitrogen oxides preferentially reduce N₂O under conditions of electron competition in wastewater. Chemical Engineering Journal, 498: 155292. ISSN 1385-8947
Jankowska, Katarzyna and Domingo-Félez, Carlos and Andres Prado-Rubio, Oscar and Skiadas, Ioannis V. and Woodley, John M. and Pinelo, Manuel (2024) Effect of backwash as a strategy for biofouling control in the submerged ceramic membrane bioreactor for high-density cultivations: Process optimization and fouling mechanism at pilot scale. Separation and Purification Technology, 338: 126428. ISSN 1383-5866
Qiu, Yuge and Ekström, Sara and Valverde-Pérez, Borja and Smets, Barth F. and Climent, Javier and Domingo-Félez, Carlos and Martínez Cuenca, Raúl and Plósz, Benedek G. (2024) Numerical modelling of surface aeration and N2O emission in biological water resource recovery. Water Research, 255: 121398. ISSN 0043-1354
See full publications listAndres Prado-Rubio, Oscar
Author
Jankowska, Katarzyna and Domingo-Félez, Carlos and Andres Prado-Rubio, Oscar and Skiadas, Ioannis V. and Woodley, John M. and Pinelo, Manuel (2024) Effect of backwash as a strategy for biofouling control in the submerged ceramic membrane bioreactor for high-density cultivations: Process optimization and fouling mechanism at pilot scale. Separation and Purification Technology, 338: 126428. ISSN 1383-5866
See full publications listSkiadas, Ioannis V.
Author
Jankowska, Katarzyna and Domingo-Félez, Carlos and Andres Prado-Rubio, Oscar and Skiadas, Ioannis V. and Woodley, John M. and Pinelo, Manuel (2024) Effect of backwash as a strategy for biofouling control in the submerged ceramic membrane bioreactor for high-density cultivations: Process optimization and fouling mechanism at pilot scale. Separation and Purification Technology, 338: 126428. ISSN 1383-5866
See full publications listWoodley, John M.
Author
Jankowska, Katarzyna and Domingo-Félez, Carlos and Andres Prado-Rubio, Oscar and Skiadas, Ioannis V. and Woodley, John M. and Pinelo, Manuel (2024) Effect of backwash as a strategy for biofouling control in the submerged ceramic membrane bioreactor for high-density cultivations: Process optimization and fouling mechanism at pilot scale. Separation and Purification Technology, 338: 126428. ISSN 1383-5866
See full publications listPinelo, Manuel
Author
Jankowska, Katarzyna and Domingo-Félez, Carlos and Andres Prado-Rubio, Oscar and Skiadas, Ioannis V. and Woodley, John M. and Pinelo, Manuel (2024) Effect of backwash as a strategy for biofouling control in the submerged ceramic membrane bioreactor for high-density cultivations: Process optimization and fouling mechanism at pilot scale. Separation and Purification Technology, 338: 126428. ISSN 1383-5866
See full publications listAvailable under License Creative Commons Attribution.
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