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Publication Type J
Authors Gao, L., X. W. Zhang, L. H. Fan, S. Gray and M. Li
Title Algae-Based Approach for Desalination: An Emerging Energy-Passive and Environmentally Friendly Desalination Technology
Source Acs Sustainable Chemistry & Engineering
Language English
Author Keywords Desalination Algae Energy-passive Energy-water-food nexus Bioaccumulation Biosorption waste-water treatment aphanothece halophytica contains of-the-art salt tolerance seawater desalination plasma-membrane osmosis desalination chlorella-vulgaris dunaliella-salina na+/h+ antiporter Chemistry Science & Technology - Other Topics Engineering
Abstract Desalination processes are critical for producing freshwater from salty water, and an algae-based desalination approach has drawn increasing attention as a potential low-cost and passive-energy desalination technology, which could be a competitive solution to desalination in remote areas impacted by water shortages. As the first comprehensive review in this emerging research field, a systematic analysis of the published results from the relevant studies is presented, and algae salt removal mechanisms are summarized. It is suggested that both nonmetabolic biosorption and metabolic-dependent bioaccumulation make contributions to salt removal, but bioaccumulation had a relatively minor role and required a significantly longer time for the reaction compared to the biosorption process. To select the most appropriate algae species for an algae-based desalination process, salt acclimation and salt removal abilities are considered as the two key selection criteria. Process configuration, influent water characteristics, algae harvesting, and reuse should also be taken into consideration during algae screening and selection. Based on the advantages and limitations of an algae-based desalination system, we have suggested different implementation strategies for algae-based desalination systems. Utilization of algae for brackish water treatment could be a more viable option compared to the seawater desalination. Combining an algae-based desalination system with wastewater treatment or the RO process could potentially improve the overall system economic feasibility. The focus areas of future studies are recommended, including system life-cycle cost analysis, energy efficient separation of algae from the effluent, mathematical simulation of the salt removal process, and the effects of engineering approaches on the salt removal process.
Author Address [Gao, Li; Gray, Stephen] Victoria Univ, Inst Sustainable Ind & Liveable Cities, Melbourne, Vic 8001, Australia. [Zhang, Xiwang] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia. [Fan, Linhua] RMIT Univ, Water Effect Tools & Technol Ctr, Sch Engn, Melbourne, Vic 2476, Australia. [Li, Ming] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China. Li, M (corresponding author), Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China. lileaf@163.com
ISSN 2168-0485
ISBN 2168-0485
29-Character Source Abbreviation ACS Sustain. Chem. Eng.
Publication Date Jul
Year Published 2021
Volume 9
Issue 26
Beginning Page 8663-8678
Digital Object Identifier (DOI) 10.1021/acssuschemeng.1c00603
Unique Article Identifier WOS:000671060400001

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