Dina Ahmed
PhD Student
Hello, my name is Dina Ahmed.
I hold BSc in Chemistry from Khartoum University, Sudan. I completed my Masters degree from Heriot-Watt University in Environmental Analysis & Assessment in 2010. Then I worked as an energy advisor for a few years inspiring people to reduce their carbon footprint and to use sustainable energy.
I joined the Horsfall Group in March 2019. My PhD project aims to develop novel lignin-metallic nanoparticle composites as anticorrosion and antifouling agents.
In my spare time I enjoy listening to music, travelling and swimming.
Public Abstract
Corrosion is a major challenge in the marine environment, requiring the investment of time and resources into maintenance. It deteriorates marine structures which affect both their integrity and performance, and poses potential risks associated with the release of toxic chemicals into the marine environment. Global estimated costs associated with maintenance are very high, and effective antifouling agents such as biocides have been officially banned since 2008 due to their serious environmental impact on the marine environment. Therefore there is an urgent need for better (more cost effective, efficient and sustainable, low toxic) anti-corrosion coatings, which my project focuses on developing.
Bacteria are used to produce small metallic particles, called nanoparticles, that will be tested for their antimicrobial properties alongside lignin which is renewable abundant waste substance from woody plants that exhibits anticorrosion properties. The combined protective coating could be applied to surfaces to prevent corrosion.
Scientific Abstract
In response to the urgent need for developing an effective, robust and efficient agent to control corrosion of marine surfaces, new materials are required to both reduce corrosion and act as antimicrobials. Lignin, a renewable abundant plant polymer, produced in large quantities as a by-product from wood and paper processing industries has such properties. In addition to lignin; biogenic nanoparticles have been used in many fields as antifouling agents. This project will focus on improving the nanoparticle yield from bacteria using a collection of genetic tools and improved downstream processing. A composite of nanoparticles and lignin will be tested for both anticorrosion and anti-biofouling abilities.