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Award details

University of Exeter funding: Natural biogeochemistry of lithium:

Natural biogeochemistry of lithium: resource formation, biorecovery and environmental impacts, Camborne School of Mines – PhD (Funded) Ref: 4085

About the award

Supervisors

Academic Supervisors

Dr Laura Newsome, College of Engineering, Mathematics and Physical Sciences, University of Exeter 
Professor Karen Hudson-Edwards, College of Engineering, Mathematics and Physical Sciences, University of Exeter
Dr Evi Petavratzi, British Geological Survey

The University of Exeter’s College of Engineering, Mathematics and Physical Sciences, is inviting applications for a fully-funded PhD studentship to commence in September 2021 or as soon as possible thereafter. For eligible students who meet the residency requirements outlined by the NERC the studentship will cover home student tuition fees plus an annual tax-free stipend of at least £15,285 for 4 years full-time, or pro rata for part-time study. Students from EU countries who do not meet the residency requirements may still be eligible for a fees-only award but no stipend.  Applicants who are classed as International for tuition fee purposes are not eligible for funding.  Further information about eligibility can be found here.

Location: Camborne School of Mines, University of Exeter, Penryn, Cornwall

Project Description

Lithium will power our low-carbon future. It is essential for lightweight batteries used to store renewable energy and power electric cars. There are three main sources of lithium: geothermal brines found in granite bedrock, brines sourced from salt lakes (see image below), and lithium-bearing minerals from rocks. At present lithium is recovered from brines using chemical processing and/or evaporation. These are expensive or take a long time, and generate large quantities of waste.  New supplies of lithium are needed to meet the growing global demand, and sustainable methods of extraction are also required.  This applied geoscience PhD project will contribute to these goals by providing key data on the factors that control lithium behaviour in the critical zone, assessing the potential for using microbes to recover lithium, and assessing the environmental impact of lithium extraction, and therefore help support the transition to a low carbon economy.

lithium 1

This project will investigate how microbial activity contributes to the weathering and mobilisation of lithium from different resource types, the potential for lithium biorecovery, and the environmental impacts of lithium extraction, through the testing the following hypotheses:
• Microbial communities are present in lithium deposits, they contribute to the biogeochemical weathering of hard rock minerals, and influence the behaviour of lithium in brines.
• Microbes can be used to recover lithium from brines, such as through sorption to biomass, or via the precipitation of lithium biominerals.  
• Lithium mine waste from a range of geological settings does not contain potentially toxic elements. The composition of lithium mine waste is poorly characterised in general, and we will seek to address this by characterising the composition of soils and wastes from lithium extraction.

The research will involve field and laboratory work, and as well as being part of the GeoNetZero CDT, the student will have access to a variety of training opportunities, please see http://blogs.exeter.ac.uk/em3group/2020/11/05/phd-lithium/ for full details and how to apply.

The ideal candidate will have a strong background in a relevant discipline, such as Earth Sciences, Geoscience, Geology, Microbiology, Molecular Biology, Environmental Chemistry, or Biology, with a particular interest in environmental geomicrobiology and geochemistry.

Entry requirements

Applicants for this studentship must have obtained, or be about to obtain, a First or Upper Second Class UK Honours degree, or the equivalent qualifications gained outside the UK, in an appropriate area of science or technology. 

If English is not your first language you will need to have achieved at least 6.0 in IELTS and no less than 6.0 in any section by the start of the project.  Alternative tests may be acceptable (see https://www.exeter.ac.uk/pg-research/apply/english/).

How to apply

In the application process you will be asked to upload several documents. 
• CV
• Letter of application (outlining your academic interests, prior research experience and reasons for wishing to undertake the project).
• Transcript(s) giving full details of subjects studied and grades/marks obtained (this should be an interim transcript if you are still studying)
• Two references from referees familiar with your academic work. If your referees prefer, they can email the reference direct to stemm-pgr-admissions@exeter.ac.uk quoting the studentship reference number 4085.
• If you are not a national of a majority English-speaking country you will need to submit evidence of your proficiency in English.

The closing date for applications is midnight on 1 February 2021.  Interviews will be held on-line or on the University of Exeter Penryn Campus the week commencing 1 March 2021.

If you have any general enquiries about the application process please email stemm-pgr-admissions@exeter.ac.uk or phone 0300 555 60 60 (UK callers) +44 (0) 1392 723044 (EU/International callers)  Project-specific queries should be directed to the main supervisor (l.newsome@exeter.ac.uk).

Summary

Application deadline:1st February 2021
Value:UK student tuition fees plus an annual tax-free stipend of at least £15,285 for 4 years full-time, or pro rata for part-time study
Duration of award:per year
Contact: STEMM PGR Admissions stemm-pgr-admissions@exeter.ac.uk