Microfiltration of algae (Chlorella sorokiniana): Critical flux, fouling and transmission

Wicaksana, Filicia; Fane, Anthony G.; Pongpairoj, Pharima; Field, Robert W.

doi:10.1016/j.memsci.2011.10.013

Cited by 129 publications

(64 citation statements)

References 24 publications

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“…As cross-flow velocity increases, flow turbulence and shear force increase at the membrane surface, reducing cake formation and increasing permeate flux [55]. Similarly, higher surface shear rates in dynamic filtration systems can lead to a decrease in fouling [56,57].…”

Section: Trans-membrane Pressure and Cross-flow Velocitymentioning

confidence: 99%

Application of membrane dewatering for algal biofuel

et al. 2015

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Section: Trans-membrane Pressure and Cross-flow Velocitymentioning

confidence: 99%

Application of membrane dewatering for algal biofuel

et al. 2015

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“…Therefore, air bubbling has been tested as a solution for membrane fouling, in which the coarse bubbles aeration generates direct shear on the membrane surface by inducing a secondary flow of liquid. This disrupts the mass transfer boundary layer, and promotes local mixing near the membrane surface [31,32].…”

Section: Discussionmentioning

confidence: 99%

Biochemical Composition of Chlorella Sorokiniana Grown in a Novel Design of Hybrid Photobioreactor

Haneda¹

2015

J Microb Biochem Technol

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The aim of this study was to assess the feasibility of a 180 L photobioreactor in which a submerged ultrafiltration system was used to maintain continuous nutrient inflow without biomass loss from the culture. After exponential growth, approximately 15% of the total volume was removed and replaced with a modified medium to induce algal physiological responses as a biochemical manipulation procedure. In this system, Chlorella sorokiniana was kept under healthy conditions, according to protein: carbohydrate ratio. C. sorokiniana was grown exponentially for 4 days up to 8.9x10 6 cells mL -1 . The culture medium used for biochemical manipulation (72 h exposure) consisted of LC Oligo medium without nitrates or phosphates, and with 7x10 -7 molL -1 total copper. The results confirmed the effectiveness of the submerged membrane and showed that algae exposure to a stressing medium resulted in intracellular carbohydrate increase, thus protein: carbohydrate (P:C) ratios, and affected lipid class composition. This novel photobioreactor configuration has the potential to improve microalgal yields and/or specific intracellular constituents, inasmuch as biochemical manipulation of the biomass is facilitated and the continuous system is operated without biomass loss.

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“…Selection of a lower pressure operation and lower cross flow velocity is more suitable for a long term operation of membrane as it presents a gentle condition for the fragile species (Frappart et al 2011). Other research has reported that the lower fouling rate was achieved at a higher cross flow velocity (Wicaksana et al 2012) and the flux was also observed to increase with increasing cross flow velocity by Choi and colleagues (Choi et al 2005). This phenomenon is due to increase of shear velocity which is caused by cross flow velocity elevation.…”

Section: Microalgae Separation Processmentioning

confidence: 97%

“…Therefore, the need for prior chemical addition is omitted (Wicaksana et al 2012) and the resultant permeates can be maintained below the specific limit without any further treatment.…”

Section: Microalgae Separation Processmentioning

confidence: 99%