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Contributing to the circular economy: biological coagulant recovery in water and wastewater treatment PhD

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  • Full or part time
    Dr G Dotro
    Prof Bruce Jefferson
  • Application Deadline
    No more applications being accepted
  • Funded PhD Project (European/UK Students Only)
    Funded PhD Project (European/UK Students Only)

Project Description

Sponsored by EPSRC, Cranfield University, Severn Trent Water, Thames Water, United Utilities and Scottish Water, this studentship will provide a bursary of up to £18,500 (tax free) plus fees* for three years

This PhD position offers an exciting opportunity to do pioneering research on the recovery of nutrients and metals from water treatment sludge in close collaboration with industry. The Water Industry is rapidly embracing the circular economy, actively trying to transform materials typically considered waste into resources. This project will develop a biological reactor for the extraction of iron and phosphorus from water waste for in-house reuse. The work combines microbiology, chemical engineering, and wastewater treatment principles to develop a proof of concept reactor. Working in collaboration with Scottish Water, Severn Trent, United Utilities and Thames Water, the student will benefit from a stimulating research environment with key input from the end user.

Current production of potable water is heavily dependent on chemical use with the UK currently using 325,000 tonnes of coagulant and producing 182,000 tonnes of sludge each year at a cost of £41m and £8.1m, respectively. Wastewater treatment also uses coagulants for enhanced treatment, with changing legislation increasing the use of coagulants to beyond that used in drinking water for the first time. Currently both use the fresh coagulant once before disposal. Coagulant recovery is therefore a much-coveted target to help reduce costs, minimise the vulnerabilities associated with the sourcing of the coagulant, and reduce the environmental footprint of the water industry. Work to date has been based on chemical recovery processes, which can have prohibitive financial and environmental costs. This PhD opportunity postulates that recovery can be made sustainable using engineered bioreactors that deliver an output that is both plausible and viable with reuse applications and the circular economy.

This project aims to determine the feasibility of operating a biological reactor to recover iron and phosphorus from water and wastewater treatment sludge.

Four water utilities together with EPSRC are sponsoring this leading-edge research project. The student will lead the work, develop experimental plans, conduct all research and discuss the key findings with the sponsors at regular intervals during the three years of work, under the guidance of the supervisory team. There will be opportunities to disseminate the research findings at both academic conferences and industrial networking events.

The work is primarily laboratory-based at Cranfield University, with sampling trips to each of the water utilities to source various types of sludge to determine the feasibility of the bioreactor. The student will work on understanding the fundamental pathways for Fe and P transformations, establish the critical reactor design and operation criteria, and propose the designs for a proof of concept prototype. The business implications including the role of the bioreactor in the contribution to the circular economy and the overall environmental footprint of the water utilities will form part of the feasibility assessment. The multiple skills needed to deliver this work will be developed through hands-on training, elective modules and mentoring, depending on the candidate’s first degree and post-graduation ambitions.

Entry requirements
Applicants should have a first or second class UK honours degree or equivalent in a related discipline. This project would suit microbiologists, engineers from chemical, environmental or ecologial backgrounds, and environmental scientists.


How to apply
For further information please contact: Dr Gabriela Dotro E: [Email Address Removed]

If you are eligible to apply for this research studentship, please complete the online application form stating the reference number SWEE0074.

Start date: ASAP

For further information contact us today:
Admissions
T: +44 (0)1234 758082
E: [Email Address Removed]

Funding Notes

*To be eligible for this funding, applicants must be a UK national.



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