PhD project: Developing tractable model systems for filamentous bacteria in wastewater treatment
Wastewater treatment (WWT) is arguably the most important biotechnological application in the world. Each day, large volumes of influent wastewater are processed in municipal WWT plants so that safe effluent is returned to the water cycle. It is the metabolic activity of flocculating bacteria that make this process work. In short, the bacteria degrade dissolved pollutants in the wastewater whilst forming compact flocs, which are then separated from the liquid under gravity. WWT flocs consist of micron-sized bacteria “glued” together by “sticky” polymers. Understanding the interactions underpinning polymer-mediated bacterial (colloidal) aggregation lies in the domain of soft matter. Therefore, the student will use the principles of soft matter to develop a simple experimental model for WWT bacteria, with a particular emphasis on filamentous cells. These are crucial for floc strength and structural integrity, however, too many filaments disrupt floc structure and give rise to a diffuse network that prevents compaction and subsequent settling. In this project, the student will design and perform experiments (with scope for computational modeling) to characterise the structure and dynamics of aggregating filamentous cells isolated from WWT
Students interested in working on bacteria & wastewater are encouraged to apply to the SOFI CDT
Deadline 28th Nov 2021
Contact Dr. Gavin Melaugh for more information
- Dr. Gavin Melaugh (School of Physics & Astronomy, University of Edinburgh)
- Professor Cait MacPhee (School of Physics & Astronomy, University of Edinburgh)
The project supervisors welcome informal enquiries about this project.
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- Find out more about Physics of Living Matter.
- Find out more about Soft Matter Physics.
- Find out more about the Institute for Condensed Matter and Complex Systems.
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