Jump to main content
Jump to site search

Issue 3, 2018
Previous Article Next Article

Emergency water treatment with ferrate(vi) in response to natural disasters

Author affiliations

Abstract

The frequency and magnitude of natural disasters (e.g. hurricanes) have increased globally over the past century. Clean water is a top priority for disaster-affected populations. However, existing emergency water treatment (EWT) methods are not all feasible or technically effective in many emergency situations. The recent Puerto Rican water crisis after Hurricane Maria highlights the research needs and new challenges for new EWT technologies. In this study, bench scale experiments were carried out to evaluate ferrate(VI) for the treatment of simulated disaster-polluted water. Results show that ferrate(VI) treatment could simultaneously and effectively inactivate bacterial indicators, remove metal and metalloid contaminants, degrade dissolved organic matter, and reduce turbidity, while insignificantly increasing total dissolved solids (TDS) to ensure an acceptable TDS ≤ 1000 mg L−1 (the recommended minimum TDS standard for an emergency water supply). The ferrate(VI) dose played a key role, because it directly influenced the removal efficiencies and also affected the size distributions of iron and metal/metalloid contaminants after treatment. As the ferrate(VI) dose increased, the fractions of soluble and colloidal iron and metal/metalloid contaminants decreased, while their particulate portions increased, implying that the contaminants were associated with ferrate(VI) resultant iron particles. Therefore, an increased ferrate(VI) dose could accelerate the aggregation of fine iron particles, thereby facilitating the removal of associated toxic metals and metalloids in ensuing solid–liquid separation. Ferrate(VI) opens a new opportunity for EWT to provide safe and sufficient water for disaster-affected populations and rapid disaster relief. The knowledge can also be applied to ferrate(VI) treatment design for municipal water treatment and reuse, supporting urban water sustainability.

Graphical abstract: Emergency water treatment with ferrate(vi) in response to natural disasters

Back to tab navigation

Article information


Submitted
04 Nov 2017
Accepted
06 Jan 2018
First published
08 Jan 2018

Environ. Sci.: Water Res. Technol., 2018,4, 359-368
Article type
Paper

Emergency water treatment with ferrate(VI) in response to natural disasters

J. Cui, L. Zheng and Y. Deng, Environ. Sci.: Water Res. Technol., 2018, 4, 359 DOI: 10.1039/C7EW00467B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Social activity

Search articles by author

Spotlight

Advertisements