industrial wastewater

Engineers Use Electricity to Clean up Toxic Water

Powerful electrochemical process destroys water contaminants, such as pesticides

Written byUniversity of Sydney
| 2 min read
Register for free to listen to this article
Listen with Speechify
0:00
2:00

A team of engineers may be one step closer to cleaning up heavily contaminated industrial wastewater streams.

Researchers from the School of Chemical and Biomolecular Engineering at the University of Sydney developed an electrochemical oxidation process with the aim of cleaning up complex wastewater that contained a toxic cocktail of chemical pollutants.

Lab manager academy logo

Lab Safety Management Certificate

The Lab Safety Management certificate is more than training—it’s a professional advantage.

Gain critical skills and IACET-approved CEUs that make a measurable difference.

"Our study, published in Algal Research, involved industrial wastewater that had been heavily contaminated with a cocktail of organic and inorganic species during a biofuel production process", said Julia Ciarlini Jungers Soares, who is completing a PhD in chemical and biomolecular engineering under the supervision of Dr. Alejandro Montoya.

Water before and after electrochemical treatment.
Julia Ciarlini Jungers Soares, University of Sydney

The wastewater, which contained carbon, nitrogen, and phosphorus, was generated in a pilot plant, designed by the team for the production of biofuels using naturally abundant microalgae.

The process involved treating wastewater with electricity using specialized electrodes. They discharged electricity, then drove oxidation reactions near the electrode surfaces, transforming the organic contaminants into harmless gases, ions, or minerals.

"We have employed an incredibly powerful process that eliminates even the most persistent non-biodegradable pollutants, such as pharmaceuticals and pesticides, as well as various classes of organic compounds that can be found in many industrial effluents," she said. "The process is relatively simple, does not require the addition of chemicals or severe operation conditions, and does not produce additional waste streams.

Interested in chemistry and materials science?

Subscribe to our free Chemistry & Materials Science Newsletter.

Is the form not loading? If you use an ad blocker or browser privacy features, try turning them off and refresh the page.

By subscribing, you agree to receive email related to Lab Manager content and products. You may unsubscribe at any time.


Related Article: A New Way to Remove Contaminants from Nuclear Wastewater


Julia Ciarlini Jungers Soares.
Julia Ciarlini Jungers Soares

Wastewater is a significant issue for our environment, as well as for many industries who use substantial volumes of water in their processes, such as in reactions, transport, and washing and cooling. Finding suitable solutions for reuse or disposal is often very challenging and costly.

The electrochemical method that we used can be readily applied to industries that must comply with strict regulations for wastewater disposal, such as pulp and paper processing, wineries, as well as pharmaceutical production facilities.

Worldwide, researchers are investigating methods for the development of biofuels from algae. Developing alternatives for the treatment and reuse of this industrial effluent is a hot research topic and can bring opportunities for energy and resource recovery within a circular bio-economy framework."

The team will soon carry out research focused on specific contaminants to better understand the chemical transformations that take place during electrochemical oxidation and will upscale the process.

A 2017 UNESCO report found that the opportunities from exploiting wastewater as a resource were vast, and that safely managed wastewater is an affordable and sustainable source of water, energy, nutrients, and other recoverable materials.

- This press release was originally published on the University of Sydney website

Loading Next Article...
Loading Next Article...

CURRENT ISSUE - May/June 2025

The Benefits, Business Case, And Planning Strategies Behind Lab Digitalization

Joining Processes And Software For a Streamlined, Quality-First Laboratory

Lab Manager May/June 2025 Cover Image