Biodesalination of saline aquaculture wastewater with simultaneous nutrient removal and biomass production using the microalgae Arthrospira and Dunaliella in a circular economy approach

Mirzaei, Marzieh; Jazini, Mohammadhadi; Aminiershad, Ghazaleh; Refardt, Dominik

doi:10.1016/j.desal.2024.117564

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-30438

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Biodesalination of saline aquaculture wastewater with simultaneous nutrient removal and biomass production using the microalgae Arthrospira and Dunaliella in a circular economy approach
Authors:	Mirzaei, Marzieh Jazini, Mohammadhadi Aminiershad, Ghazaleh Refardt, Dominik
et. al:	No
DOI:	10.1016/j.desal.2024.117564 10.21256/zhaw-30438
Published in:	Desalination
Volume(Issue):	581
Issue:	117564
Issue Date:	20-Jul-2024
Publisher / Ed. Institution:	Elsevier
ISSN:	0011-9164 1873-4464
Language:	English
Subjects:	Biodesalination; Nutrient removal; Aquaculture wastewater; Arthrospira platensis; Dunaliella salina
Subject (DDC):	639.8: Aquaculture
Abstract:	Freshwater scarcity is escalating due to factors such as climate change, droughts, increased demand, population growth, and poor water management practices. A promising sustainable solution to this challenge is biodesalination using microalgae. We demonstrate that Arthrospira platensis and Dunaliella salina can thrive in saline aquaculture wastewater, reducing both its salinity and the concentration of nutrients. The salinity removal ability was quantified through measurements of electrical conductivity (EC) and ICP-OES, revealing reductions in EC by up to 45 % (from 31.5 to 17.2 ms/cm) for A. platensis and 35 % (from 31.5 to 20.5 ms/cm) for D. salina. FESEM indicated the formation of a salt layer on the surface of both microalgae, suggesting biosorption and bioaccumulation as likely mechanisms. FTIR spectroscopy analysis demonstrated the binding of functional groups within the cell wall of A. platensis and the cell membrane of D. salina with the ions present in the medium. Scaling up the cultivation of A. platensis in a photobioreactor under non-sterile conditions validated the processes' potential for industrial-scale biodesalination. Although the treated water did not reach the standards for irrigation or potable use, this approach provides a preliminary desalination step, reducing burden on subsequent treatments and simultaneously providing nutrient removal and biomass production.
URI:	https://digitalcollection.zhaw.ch/handle/11475/30438
Fulltext version:	Published version
License (according to publishing contract):	CC BY 4.0: Attribution 4.0 International
Departement:	Life Sciences and Facility Management
Organisational Unit:	Institute of Natural Resource Sciences (IUNR)
Appears in collections:	Publikationen Life Sciences und Facility Management

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Mirzaei, M., Jazini, M., Aminiershad, G., & Refardt, D. (2024). Biodesalination of saline aquaculture wastewater with simultaneous nutrient removal and biomass production using the microalgae Arthrospira and Dunaliella in a circular economy approach. Desalination, 581(117564). https://doi.org/10.1016/j.desal.2024.117564

Mirzaei, M. et al. (2024) ‘Biodesalination of saline aquaculture wastewater with simultaneous nutrient removal and biomass production using the microalgae Arthrospira and Dunaliella in a circular economy approach’, Desalination, 581(117564). Available at: https://doi.org/10.1016/j.desal.2024.117564.

M. Mirzaei, M. Jazini, G. Aminiershad, and D. Refardt, “Biodesalination of saline aquaculture wastewater with simultaneous nutrient removal and biomass production using the microalgae Arthrospira and Dunaliella in a circular economy approach,” Desalination, vol. 581, no. 117564, Jul. 2024, doi: 10.1016/j.desal.2024.117564.

MIRZAEI, Marzieh, Mohammadhadi JAZINI, Ghazaleh AMINIERSHAD und Dominik REFARDT, 2024. Biodesalination of saline aquaculture wastewater with simultaneous nutrient removal and biomass production using the microalgae Arthrospira and Dunaliella in a circular economy approach. Desalination. 20 Juli 2024. Bd. 581, Nr. 117564. DOI 10.1016/j.desal.2024.117564

Mirzaei, Marzieh, Mohammadhadi Jazini, Ghazaleh Aminiershad, and Dominik Refardt. 2024. “Biodesalination of Saline Aquaculture Wastewater with Simultaneous Nutrient Removal and Biomass Production Using the Microalgae Arthrospira and Dunaliella in a Circular Economy Approach.” Desalination 581 (117564). https://doi.org/10.1016/j.desal.2024.117564.

Mirzaei, Marzieh, et al. “Biodesalination of Saline Aquaculture Wastewater with Simultaneous Nutrient Removal and Biomass Production Using the Microalgae Arthrospira and Dunaliella in a Circular Economy Approach.” Desalination, vol. 581, no. 117564, July 2024, https://doi.org/10.1016/j.desal.2024.117564.