Energy minimization of a tilted panel filtration system for microalgae filtration: Performance modeling and optimization

Eliseus, A.; Putra, Zulfan Adi; Bilad, Muhammad Roil; Nordin, Nik Abdul Hadi Md; Wirzal, Mohd Dzul Hakim; Jaafar, Juhana; Khan, Asim Laeeq; Aqsha,

doi:10.1016/j.algal.2018.07.008

Cited by 21 publications

(9 citation statements)

References 34 publications

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“…Intermittent aeration is a process to periodically stop the aeration in order to save energy consumption. It can also be seen as the performance of the tilted panel system operated under switching panel mode to improve panel productivity with alternating aeration [18]. The switching panel is considered beyond the scope of this study.…”

Section: Effect Of Intermittence Aerationmentioning

confidence: 99%

“…The system offers 2.7-fold of permeance increment under optimum condition for microalgae filtration and can reach plateau permeance for activated sludge filtration using MBRs [11]. The tilted panel also allows for switching operation in order to enhance the panel productivity [18]. Apart from the plate-and-frame module system, the ceramic tubular module can also be tilted to maximize the contact of air bubbles, and hence improve overall system productivity [19].…”

Section: Introductionmentioning

confidence: 99%

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Patterned Membrane in an Energy-Efficient Tilted Panel Filtration System for Fouling Control in Activated Sludge Filtration

et al. 2020

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A membrane bioreactor enhances the overall biological performance of a conventional activated sludge system for wastewater treatment by producing high-quality effluent suitable for reuse. However, membrane fouling hinders the widespread application of membrane bioreactors by reducing the hydraulic performance, shortening membrane lifespan, and increasing the operational costs for membrane fouling management. This study assesses the combined effect of membrane surface corrugation and a tilted panel in enhancing the impact of air bubbling for membrane fouling control in activated sludge filtration, applicable for membrane bioreactors. The filterability performance of such a system was further tested under variable parameters: Filtration cycle, aeration rate, and intermittent aeration. Results show that a combination of surface corrugation and panel tilting enhances the impact of aeration and leads to 87% permeance increment. The results of the parametric study shows that the highest permeance was achieved under short filtration–relaxation cycle of 5 min, high aeration rate of 1.5 L/min, and short switching period of 2.5 min, to yield the permeances of 465 ± 18, 447 ± 2, and 369 ± 9 L/(m2h bar), respectively. The high permeances lead to higher operational flux that helps to lower the membrane area as well as energy consumption. Initial estimation of the fully aerated system yields the energy input of 0.152 kWh/m3, much lower than data from the full-scale references of <0.4 kWh/m3. Further energy savings and a lower system footprint can still be achieved by applying the two-sided panel with a switching system, which will be addressed in the future.

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Section: Effect Of Intermittence Aerationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Patterned Membrane in an Energy-Efficient Tilted Panel Filtration System for Fouling Control in Activated Sludge Filtration

et al. 2020

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“…The effect of the aeration rate on permeability was investigated at rates of 0, 0.36, 0.72, 1.08, 1.44, and 1.80 L•min −1 while keeping the tilting angle at 20 • [30]. The tilting angle effect was evaluated at 0, 5, 10, 15, and 20 • while keeping the aeration rate at 1.80 L•min −1 .…”

Section: Filterability Testmentioning

confidence: 99%

“…An aeration rate of 1.8 L•min −1 improves water permeability by ±10% compared to the non-aerated system. Increasing the aeration rate imposes greater shear rates between the bubbles and the membrane's surface, creating a more vigorous bulk fluid movement, and providing more mass and momentum transfer to scour the foulants [30].…”

Section: Effect Of Aeration Ratementioning

confidence: 99%

Filterability of Polysulfone Membrane in a Tilted Panel System for Activated Sludge Filtration

Ismail

Mulyati

Aprilia

et al. 2020

Water

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Membrane bioreactors (MBRs) are established technology for treatment of domestic and industrial wastewater because they offer a small footprint and high quality of effluent, in addition to lower excess sludge. However, their widespread applications are still limited by higher expenditure for compensating for membrane fouling. In this study, polysulfone (PSF)-based ultrafiltration membranes were developed and integrated with a tilted panel system for fouling control in activated sludge filtration. The results show an enhanced performance of filtration system thanks to the mutual advantage of the tilted panel system and the membrane properties. Both membranes showed a clear trend of higher permeability with respect to the tilted panel parameters, namely, higher tilting angle, higher aeration rate, and shorter intermittent/switching period. PSF-1 (1 wt% polyethylene glycol (PEG) additive) shows significantly better performance than PSF-3 (3 wt% PEG additive) although their mean flow pore size, structural properties, and contact angle do not differ significantly. PSF-1 shows superior filterability performance of about 45% for panel tilting angles of 20° at an aeration rate of 1.8 L·min−1, and 11% for a switching period of 1 min compared with PSF-3. The key property enhancing the performance of the PSF-1 is its narrower distribution of pore size. Overall results suggest that an optimum system could be achieved by optimizing both the filtration system and the membrane material properties.

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“…Nonetheless, maximum impact of air bubbling in fouling management is often achieved at a higher aeration rate, which incurs high energy input. However, a newly developed tilted membrane panel system proves to enhance membrane surface–air bubbles interaction at an economic pumping rate [ 23 ], which substantially reduced energy input by operating under optimum conditions [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

Detergent and Water Recovery from Laundry Wastewater Using Tilted Panel Membrane Filtration System

et al. 2020

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Increasing global concern on clean water scarcity and environmental sustainability drive invention in water reclamation technology. Laundry wastewater reclamation via membrane technology faces the challenge of membrane fouling. This paper assesses a tilting-the-filtration-panel filtration system for the treatment of real laundry wastewater filtration aimed for water and detergent reuse. Results showed that the panel tilting significantly improved fouling control and enhanced permeability due to enhanced contact of air bubbles with the membrane surface, which induced continuous detachment of foulant from the membrane surface. The combination of aeration rate and tilting angle resulted in up to 83% permeability enhancement from 109 to 221.4 ± 10.8 (L/m2·h·bar). The system also offers 32% detergent recovery. Overall findings suggest that the system offers an attractive approach for both fouling management and detergent recovery and can potentially be applied under a simple setup in which filtration can be driven by gravity/hydrostatic pressure.

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Energy minimization of a tilted panel filtration system for microalgae filtration: Performance modeling and optimization

Cited by 21 publications

References 34 publications

Patterned Membrane in an Energy-Efficient Tilted Panel Filtration System for Fouling Control in Activated Sludge Filtration

Patterned Membrane in an Energy-Efficient Tilted Panel Filtration System for Fouling Control in Activated Sludge Filtration

Filterability of Polysulfone Membrane in a Tilted Panel System for Activated Sludge Filtration

Detergent and Water Recovery from Laundry Wastewater Using Tilted Panel Membrane Filtration System

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