Metal recovery from reverse osmosis concentrate

Jeppesen, T., Shu, L., Keir, G., and Jegatheesan, V. (2009) Metal recovery from reverse osmosis concentrate. Journal of Cleaner Production, 17 (7). pp. 703-707.

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Abstract

The use of reverse osmosis (RO) membranes is becoming increasingly common in desalination plants, though disposal of the highly concentrated brines poses significant environmental risks. The targeted extraction of some metals from the concentrate can have multiple environmental and economic benefits. This is particularly apparent with recent developments in the development of zero liquid discharge desalination systems. This study has shown that recovery of sodium chloride from RO concentrate can significantly lower the cost of potable water production if employed in conjunction with thermal processing systems. Additionally, the recovery of rubidium from seawater may be a potential source of revenue, however further work is needed to characterise the economics of the rubidium extraction process. Finally, removal of phosphorus from RO concentrate provides little economic benefit, but may become increasingly necessary as environmental restrictions increase in the future.

Item ID: 11209
Item Type: Article (Refereed Research - C1)
Keywords: desalination; metal recovery; nanofiltration; reverse osmosis membranes; salt; zero liquid discharge
ISSN: 0959-6526
Date Deposited: 28 May 2010 01:19
FoR Codes: 09 ENGINEERING > 0904 Chemical Engineering > 090404 Membrane and Separation Technologies @ 50%
09 ENGINEERING > 0907 Environmental Engineering > 090703 Environmental Technologies @ 50%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8499 Other Mineral Resources (excl. Energy Resources) > 849999 Mineral Resources (excl. Energy Resources) not elsewhere classified @ 100%
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