PhD: Bio-chemo-cat — Converting Potato Waste into Acrylic Acid and Propylene Glycol

PhD: Bio-chemo-cat — Converting Potato Waste into Acrylic Acid and Propylene Glycol

Quick Decision

This project is most distinctive at the junction between fermentation and catalytic reaction engineering: producing lactic acid is only the first step; making a useful catalytic feed and demonstrating defensible environmental gains are the harder integration questions. The supervisory team connects bioprocesses, catalyst behaviour and sustainability assessment. The key question for an applicant is whether that breadth can become a feasible set of linked experiments, models and environmental comparisons.

The Birmingham 2027 call lists the project under 168D PhD in Chemical Engineering (MIBTP), with an October 2027 start and a deadline of 23 November 2026. The application opening date, exact deadline time and time zone are not stated, and the available record does not establish whether applications are still being accepted. Birmingham explicitly covers international tuition fees for MIBTP awardees; the advertised £21,805 stipend is a 2026/27 reference rate, not a confirmed 2027/28 amount. The immediate action is to check eligibility and prepare the correct programme-specific application while asking how the two product routes will be prioritised. Birmingham project call.

Research Problem and Doctoral Work

Where the scientific problem lies

The detailed project description proposes transforming potato-processing waste into lactic acid (LA), then acrylic acid (AA) and propylene glycol (PG). Its context figures—over 700,000 tonnes of UK potato waste annually and an approximately US$18 billion combined LA/AA market—are advertised background figures whose date and market definition were not independently established. They should not be used as a forecast of this process's commercial value.

Potato waste to LA already has experimental precedent: de Oliveira and colleagues reported fermentation and recovery in 2021. Consequently, novelty cannot rest simply on using potato waste as a fermentation substrate. The potential doctoral contribution is the integration of biological production, selective and stable catalytic conversion, reactor modelling and a credible environmental comparison. Potato-to-LA study.

Advertised tasks and their boundaries

Work strand	Advertised research	What still needs defining
Biological production	Pretreatment, sugar extraction and optimisation of fermentation to LA	Feedstock variability, production baseline and condition of the feed passed downstream
Catalysts	Active, deactivation-resistant solid catalysts; basic zeolites for AA dehydration and supported metals for PG hydrogenation; Cu or Fe incorporation by impregnation is mentioned	Whether these are starting candidates or already validated materials, and which stability/selectivity targets matter
Reaction engineering	Fixed-bed continuous-flow and batch evaluation, dilute-feed performance, kinetic parameters and models for scale-up	How transport effects will be separated from kinetics and how the AA/PG workload is divided
Environmental assessment	Cradle-to-grave LCA against fossil-based production	Functional unit, product specification, allocation, energy inputs and available inventory data

The project description lists these tasks; Birmingham's call independently confirms the title and primary supervisor, but no complete official technical outline is available. One passage emphasises LA-to-AA conversion while the objectives include both AA and PG. Both routes therefore remain in scope until the supervisors clarify priorities.

Three useful analytical questions, rather than additional promised work packages, follow. Can realistic dilute or impurity-containing feeds preserve catalyst selectivity and lifetime? Does extra concentration or purification consume the apparent environmental advantage of waste feedstock? Will a fitted kinetic model remain informative outside its calibration conditions? These questions connect the project's stated transport, stability, dilute-feed and LCA aims with the adjacent processing literature; there is no verified evidence that this particular integrated process has already solved them.

Plausible outputs are comparative fermentation/catalyst datasets, a validated kinetic description and a transparent LCA. A pilot plant, commercial process or guaranteed publication count is not advertised.

School, Programme and Field Context

The host is the University of Birmingham's School of Chemical Engineering, Edgbaston, United Kingdom. The university call identifies its own 168D MIBTP programme; the partnership's six universities provide a training network, which does not itself establish a joint degree or shared employment contract. Registration and individual award terms should be confirmed with Birmingham. School.

Birmingham is joint 68th in the QS World University Rankings 2027, an overall institutional ranking. The school reports a UK top-ten position for Engineering research GPA and four-star research in REF 2021; this is broader Engineering evidence, not a verified Chemical Engineering subject or laboratory ranking. An independent current Chemical Engineering-specific position was not established. QS ranking history.

MIBTP is a BBSRC-supported, four-year training context with quantitative teaching, cross-partner research experience and a three-month non-academic PIPS internship. The published detailed outline is labelled 2025: it includes R/statistics, later bioinformation/modelling, a three-month partner placement and a technical visit of one day to three months in years two or three. The FAQ uses older, less flexible mini-project language. Treat these as evidence of training architecture, then obtain the 2027 schedule and funding arrangements for travel rather than assuming the doctorate is four uninterrupted years in one laboratory. Training outline, partnership overview, FAQs.

Supervisor and Lab Assessment

A coherent team, with the division of work still to agree

Joe Wood leads the Catalysis and Reaction Engineering group, working on catalyst development, reactor operation and more sustainable chemicals. Tim Overton brings microbial physiology and productive bioprocess experience. Neha Mehta works on whole-system sustainability, circular economy and LCA/techno-economic/material-flow analysis. The inferred division—catalysts/reactors, fermentation and environmental assessment—is credible, but is not a published joint-supervision agreement. Wood, Overton, Mehta, UKERC profile.

The department describes experimental and computational work across upstream and downstream bioprocessing. That supports an appropriate research ecosystem; it does not verify the particular reactors, analytical instruments, fermentation capacity or LCA licences allocated to this student. Mehta's public supervision page describes collaborative goal setting and regular meetings, but cannot determine the cadence of this three-supervisor project. Bioprocessing environment.

Publication evidence and its limits

These papers provide methodological context, not results already achieved by Bio-chemo-cat.

Mudi, Hart, Ingram and Wood: 2024 kinetic-model comparison

Mudi, Hart, Ingram and Wood, 2024, Catalysts 14(1), 54. The study compares LHHW kinetic models for furfural hydrogenation on a Ni/biochar catalyst; a dual-site description fits that system best. Its relevance is the connection between measured catalytic behaviour and rate models. It does not validate kinetics for LA, Cu/Fe candidates or fermentation-derived feeds, and fit quality alone does not uniquely prove mechanism. The evidence cited here is limited to the repository abstract and relevant model passages. Paper. The supporting spreadsheet may help with modelling preparation, but its contents are outside the evidence assessed here. Dataset.

Fernández-Castané et al., 2024: production and recovery

Fernández-Castané and colleagues, including Overton, 2024, Food and Bioproducts Processing 144, 110–122. This paper joins fermentation to downstream recovery and purification of bacterial magnetosomes. It demonstrates why product recovery must be considered alongside biological production. That is methodologically relevant to defining a usable LA feed, although magnetosomes are a different product and the result cannot be transferred to the proposed catalytic process. The available assessment covers the abstract and repository conclusions, not all experimental sections. Paper.

Osman et al., 2022: performance and environmental burdens

Osman and colleagues, including Mehta, 2022, ACS Sustainable Chemistry & Engineering 10(37), 12433–12447. Waste-derived sorbent synthesis is assessed together with eleven LCA impact categories. The contribution relevant here is combining performance with environmental burdens rather than declaring waste-derived products inherently green. It concerns water-treatment materials, not potato-to-AA/PG; the available evidence is the university abstract and metadata; publisher full text was unavailable. This 2022 paper falls within the five-year review window. Paper.

Together, these papers support complementary methodological competence. They establish neither this integrated process's readiness nor personal supervision availability or alumni outcomes.

Funding, Application and Living Cost

Eligibility and the award

International students can apply; up to 30% of awards in an MIBTP cohort may go to international candidates; whether that cohort covers the entire partnership remains unconfirmed. This is a cohort proportion, not this project's allocation or an individual applicant's chance; the project-specific number of awards is unconfirmed. Relevant first/high 2:1 degrees qualify; a lower 2:1 may be considered with a Master's or at least three years of relevant postgraduate experience. Lower classifications require exceptional additional experience. Overseas qualifications are assessed for equivalence; no China-specific percentage conversion was verified. These are eligibility routes, not admission guarantees. The programme anticipates interviews in late January/early February 2027. MIBTP application guidance.

UKRI normally funds UK-rate fees, and Birmingham explicitly supplements the overseas difference for MIBTP awardees. The advertised package also includes research consumables, travel/conference support and laptop use. The stated £21,805 per year for 2026/27 is about £1,817 per month by arithmetic. Obtain the October 2027 rate, award dates and continuation conditions in writing. The offer is a competitive studentship, not a salary or an automatic award attached to every application.

Living-cost interpretation

The university's undated table uses a 42-week session. It lists essentials of £185/week in a private house or £207/week in self-catered halls, plus £110/week of variable spending. A simple 52-week doctoral illustration gives:

Illustration	Annual cost	Monthly equivalent
Private-house essentials plus listed variables	£15,340	£1,278
Self-catered essentials plus listed variables	£16,484	£1,374

Against the 2026/27 reference stipend, the arithmetic difference is £5,321–£6,465 per year before relocation, visa/healthcare, deposits, price changes or extra personal needs. This is not a confirmed 2027 housing quotation or guaranteed savings. Official living-cost table.

The primary 2026 student-money survey reports £1,113/month for the West Midlands, but includes students living with parents and constrained spending; it cannot substitute for an independently housed doctoral budget. 2026 survey. Immigration financial evidence is a separate issue from living costs; check current sponsorship/CAS and visa rules when applying, rather than carrying a 2026 threshold into 2027. Official financial-evidence guidance.

Applicant Fit, Preparation and Career Relevance

The clearest preparation is relevant research in chemical/biochemical engineering, chemistry, biotechnology or an adjacent quantitative science, with evidence of learning across disciplinary boundaries. No requirement to master fermentation, catalysis, reactor modelling and LCA before entry is advertised. An applicant seeking only computation or a tightly confined single-method biological project should clarify the substantial experimental and reaction-engineering work.

Useful suggested preparation includes mass balances, regression and uncertainty, rate modelling, upstream/downstream interfaces and LCA functional units. A reproducible analysis showing how evidence changed a process decision would be more informative than claiming familiarity with every named technique. These are analytical suggestions, not additional eligibility conditions.

For language context, the general Chemical Engineering with Integrated Study course lists IELTS 6.0 overall/5.5 per component. It is a separate general course; that does not establish the exact language condition of 168D MIBTP. Likewise, general proposal guidance must not override Birmingham's MIBTP-specific no-proposal instructions. General course benchmark.

Career and transferable skills

Career value is likely to come from transferable process R&D, catalytic testing, fermentation development and environmental assessment. IChemE's March 2026 release, based on 2,503 member and 875 employer responses in late 2025, reports sector-specific technical skills shortages. The government's engineering-biology vision identifies process engineers and fermentation scientists as important to commercial scale-up. These support broad relevance, not a forecast of jobs, salary, visa sponsorship or placement outcomes for this particular doctorate. IChemE survey, engineering-biology vision.

Next Actions and Questions to Verify

Before applying: confirm degree equivalence and the 168D English condition, reference workflow and deadline hour. Use the linked Chemical Engineering MIBTP programme. Birmingham allows one project per programme, at most five programmes, with separate applications; an application naming several projects may be rejected. Prepare the CV, English academic evidence and Research Methods response. Its specific instructions say no research proposal and an optional personal statement; clarify reference/cover-letter handling where generic FAQ wording differs. Complete the MIBTP ED&I form. The FAQ's isolated October 2026 English-condition wording is older than the current 2027 call.

At interview: ask what baseline fermentation and catalyst data already exist; what feed enters the catalytic reactor; how AA and PG are prioritised; and what stability, kinetic and LCA results would constitute a feasible thesis. Confirm instruments, feedstock supply, data/software access and how three supervisors will make decisions together.

Before accepting: obtain the full international-fee cover, stipend year/rate, award duration and continuation conditions in writing. Resolve the 2027 placement/technical-visit/PIPS calendar, travel and accommodation funding, registration arrangements and personally funded immigration/relocation costs. Public contacts are j.wood@bham.ac.uk, t.w.overton@bham.ac.uk, n.mehta.1@bham.ac.uk and MIBTP@warwick.ac.uk; listed contacts do not imply messages have been sent.

Evidence and Sources

Technical tasks follow the detailed project description; Birmingham's call confirms the project title and primary supervisor, but no complete official technical outline is available.

Project, programme and admissions

• Birmingham MIBTP official call and application instructions
• MIBTP application and eligibility
• MIBTP FAQs
• MIBTP training outline, labelled 2025
• MIBTP partnership overview
• General Chemical Engineering with Integrated Study course

Institution and supervisors

• School of Chemical Engineering
• QS University of Birmingham ranking history
• Joe Wood profile
• Tim Overton profile
• Neha Mehta MIBTP profile
• Neha Mehta UKERC profile
• Birmingham Bioprocessing and Bioengineering

Research papers and data

• Mudi et al., 2024, kinetic modelling of furfural hydrogenation
• Supporting furfural kinetic dataset
• Fernández-Castané et al., 2024, integrated magnetosome biomanufacturing
• Osman et al., 2022, waste-derived sorbent synthesis and LCA
• de Oliveira et al., 2021, potato-processing waste to lactic acid
• de Oliveira et al., 2021, original DOI
• Matharu, de Melo and Houghton, 2016, food-chain waste chemicals

Finance and career context

• Birmingham official living-cost table
• National Student Money Survey 2026
• UK Student visa financial evidence
• IChemE 2026 Employment Survey release
• UK National Vision for Engineering Biology