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A novel microaerobic bioreactor to enhance Magnetotactic Bacteria growth and magnetosome production for application as biosorbents for metal recovery from electronic waste

Project description

Bacteria for recycling electronic waste

Discarded electrical and electronic equipment including mobile phones, computers and household appliances generate millions of tonnes of waste which release toxic metals to the environment. Current recycling methods such as hydrometallurgy face issues of energy use and sustainability. With the support of the Marie Skłodowska-Curie Actions programme, the MS-GMT project addresses the pressing need for low-carbon metal recycling solutions using magnetotactic bacteria (MTB). MTB have the unique ability to absorb and store metals from electronic waste in magnetic nanoparticles called magnetosomes. Researchers will develop a novel, energy-efficient bioreactor tailored to the growth needs of MTB. The proposed approach has the potential to reduce the environmental impact of electronic waste and support circular bioeconomy goals.

Objective

Annually, the world generates over 62 million tonnes of electronic waste (e-waste), which contains metals (e.g. lead, mercury, cadmium), which, if not properly managed, can leach into the environment, contaminating soil, water, and air. This situation poses a significant risk to human health and ecosystems, necessitating innovative recycling measures. So far, hydrometallurgical processes for metal recovery have made strides in addressing these issues. However, challenges such as their sustainability approaches, storage capacity, high energy costs, and scalability are problematic, leading to an urgent need for new solutions. The use of magnetotactic bacteria (MTB) represents an alternative low-carbon route for metal recovery, as they can uptake and store large amounts of metals in the form of magnetosomes, (magnetic nanoparticles that can be doped with a variety of metals for superior biotechnology applications) and biosorb a wide range of metals on the bacterial membrane. However, MTB are typically cultivated using off-the-shelf bioreactors as a one-fit-all system, with sparging hydrodynamics significantly limiting microbial growth as they require tightly controlled microaerobic conditions. Therefore, this interdisciplinary project aims to develop, optimize and scale up a sustainable biomanufacturing strategy (via enhancing production performance) for MTB growth using e-waste with a novel bioreactor design. This aim successfully addresses a significant environmental problem with a low-energy, sustainable process. Overall, the developed technology will create industrial potential for its utilisation in other applicable processes, such as the health sector. This project will have a great social and economic impact in Europe by contributing to reaching Net Zero and the Green Deal targets by 2050 while advancing bionanotechnologies. It also has the potential to create new business models and technology development while promoting circular bioeconomy principles.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

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Coordinator

ASTON UNIVERSITY
Net EU contribution
€ 260 347,92
Address
ASTON TRIANGLE
B4 7ET Birmingham
United Kingdom
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data

Partners (1)