Dewatering algae using an aquaporin-based polyethersulfone forward osmosis membrane

Munshi, Faris M.; Church, Jared; McLean, Rebecca; Maier, Nicholas; Sadmani, A.H.M. Anwar; Duranceau, Steven J.; Lee, Woo Hyoung

doi:10.1016/j.seppur.2018.04.077

Cited by 55 publications

(23 citation statements)

References 40 publications

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“…Primary DS used in FO for microalgae dewatering are synthetic salts, such as NaCl, MgCl 2 , CaCl 2 , KCl, NH 4 Cl [66][67][68][70][71][72][73][74][75]77], mimicking the constituents of seawater. The concentrations used range from 0.5 to 5 M, which is much higher than the salt concentration in seawater [78].…”

Section: Draw and Feed Solutionsmentioning

confidence: 99%

“…The most explored microalgae were Chlorella vulgaris, with different strains from many culture collections, e.g., Chlorella vulgaris [67], Chlorella sp.ADE4 [69], Chlorella sp. KR-1 [72], Chlorella vulgaris (UTEX 2714, Austin, TX) [73], Chlorella vulgaris (FACHB-36) [74], Chlorella vulgaris KCTC AG 10002 [76]. The microalgae were cultivated with different media such as BG-11, modified bold basal media (BBM), selenite enrichment (SE), and Bristol medium (BM) in different bioreactors.…”

Section: Draw and Feed Solutionsmentioning

confidence: 99%

“…Natural seawater and sea salts are also used as DS as well as brine solution from brackish water and seawater RO [69][70][71]73]. Pure and crude glycerol was also used as DS [68].…”

Section: Draw and Feed Solutionsmentioning

confidence: 99%

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Microalgae in Food-Energy-Water Nexus: A Review on Progress of Forward Osmosis Applications

et al. 2019

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Nowadays the world is facing vulnerability problems related to food, energy and water demands. The challenges in those subsystems are intertwined and thus require inter-discipline approaches to address them. Bioresources offer promising solutions of the dilemma. Microalgae biomass is expected to become a superfood and a favorable energy feedstock and assist in supplying clean water and treat wastewater. Efficient mass production of microalgae, both during upstream and downstream processes, is thus a key process for providing high quality and affordable microalgae biomass. This paper covers recent progress in microalgae harvesting and dewatering by using osmotic driven membrane process, i.e., forward osmosis. Critical factors during forward osmosis process for microalgae harvesting and dewatering are discussed. Finally, perspective on further research directions and implementation scenarios of the forward osmosis are also provided.

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Section: Draw and Feed Solutionsmentioning

confidence: 99%

Section: Draw and Feed Solutionsmentioning

confidence: 99%

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Microalgae in Food-Energy-Water Nexus: A Review on Progress of Forward Osmosis Applications

et al. 2019

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“…(5-6 μm) and Chlorella vulgaris (0.1 μm) can be harvested through microfi ltration [23,24], while a microfi ber disc fi lter was used for Nannochloropsis salina [25]. For Chlorella pyrenoidosa, Chu et al studied a stainless steel mesh with a pore size of 75 μm, on which a diatomite cake layer was formed as the dynamic membrane module [26,27] and found this membrane combination generally suitable [28]. It should be mentioned that the opposite objective has been reported in several publications: textile fabrics can also be prepared to protect buildings from algae (particularly in consortia with bacteria) growing on them or to serve other biocidal functions [29].…”

Section: Textile Fabrics For Algae Immobilisation and Harvestingmentioning

confidence: 99%

On the Possible Use of Textile Fabrics for Vertical Farming

Ehrmann¹

2019

TEK

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Vertical farming is one of several ideas that are being developed further by diverse research groups, companies and private citizens. Due to the growing problems of urbanisation and a growing population, vertical farming has presented itself as one possibility to feed people, particularly in large and densely crowded cities, in an effi cient and eco-friendly way. Interestingly, while agrotextiles are often used in agriculture and textile fabrics can be bought, for example, as frames for small vertical farming solutions for private balconies, only a few researchers have studied the possibilities of using textile fabrics as substrates for vertical faming to date. This study provides an overview of possible future applications of textile fabrics in vertical farming solutions.

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“…Unlike pressure-driven membrane processes, FO uses a high ionic strength draw solution on the permeate side of the membrane to “draw” water from the feed to the permeate [ 6 ]. As a result, FO is capable of concentrating biomass [ 7 , 8 ] and offers excellent dewatering efficiency with less fouling potential compared to pressure driven membrane processes [ 9 ]. Systematic experiments were conducted to explore the impact of operating factors on the rate of water removal and the maximum achievable chicken feather stick water concentration during batch operation.…”

Section: Introductionmentioning

confidence: 99%

Low-Energy Membrane Process for Concentration of Stick Water

Zhou

Husson

2018

Membranes

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This communication describes the application of forward osmosis (FO) to concentrate stick water, a nutrient-rich water byproduct of meat rendering operations. The objectives of the study were to carry out a set of batch FO runs in concentration mode to determine the maximum achievable stick water concentration and to perform a preliminary cost analysis for operating a FO/reverse osmosis membrane separation process for comparison to an evaporative concentration process. The study examined the roles of feed and draw solution stir rates, temperature, feed concentration, and draw solution ionic strength on flux using commercial cellulose triacetate membranes. Results show that FO could concentrate the stick water up to 45 wt %; however, concentrations above about 30 wt % would be difficult to process through conventional membrane configurations. Preliminary operating cost estimations show that the energy cost of the FO process is about 5.3% of the energy costs for a single-effect thermal evaporation process; and, assuming a 2-year membrane lifetime, the total operating cost using FO membranes was estimated to be about 23.1% of the operating cost using such a thermal evaporation process.

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Dewatering algae using an aquaporin-based polyethersulfone forward osmosis membrane

Cited by 55 publications

References 40 publications

Microalgae in Food-Energy-Water Nexus: A Review on Progress of Forward Osmosis Applications

Microalgae in Food-Energy-Water Nexus: A Review on Progress of Forward Osmosis Applications

On the Possible Use of Textile Fabrics for Vertical Farming

Low-Energy Membrane Process for Concentration of Stick Water

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