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Developing Sustainable Decarbonised Polygeneration System Concept for the Production of Hydrogen, Chemicals and Energy

   Chemical Engineering

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  Dr Kok Siew Ng  Applications accepted all year round  Self-Funded PhD Students Only

About the Project

Polygeneration system is a highly integrated, flexible and robust system design concept that is capable of generating a spectrum of products such as chemicals, fuels, hydrogen, heat and power.

This research will consider using organic waste and biomass resources as the feedstock. Unlocking the full potential of utilising organic waste requires consideration of multiple product generation and combining different technologies into hybrid systems. Chemical engineering principles, process integration and intensification techniques are needed in designing the polygeneration system in order to achieve maximum resource efficiency and minimum environmental impact by recovering by-product and waste streams into value-added products.

What would you expect from this project?

• Computational modelling: This project will require simulation modelling and optimisation techniques using software such as Aspen Plus, Matlab and GAMS, and will also involve software development using Python.

• Sustainability assessment: This research will involve rigorous sustainability assessment including techno-economic analysis and environmental life cycle assessment (LCA). LCA software such as SimaPro is required. It is anticipated that this research will generate principles and methodologies for designing a complex polygeneration system.

Applicants should have received a First or Upper Second Class honours degree in Chemical Engineering, Environmental Engineering, Chemistry or a similar discipline. Applicants should be highly motivated, able to work independently and in a team, and have good written and verbal communication skills.

Research journey

Doctoral research programmes (PhDs) take a proud place in the world-class research environment and community at Brunel. PhD students are recognised and valued by their supervisors as an essential part of their departments and a key component of the university's overall strategy to develop and deliver world-class research.

A PhD programme is expected to take 3 years full-time or 6 years part-time, with intakes starting in January, April or October.

The general University entrance requirement for registration for a research degree is normally a First or Upper Second Class Honours degree (1st or 2:1) or an international equivalent. A Masters degree is a welcome, but not required, qualification for entry.

Find out how to apply for a PhD at Brunel

Research support

Excellent research support and training

The Graduate School provides a range of personal, professional and career development opportunities. This includes workshops, online training, coaching and events, to enable you to enhance your professional profile, refine your skills, and plan your next career steps as part of the Researcher Development Programme. The researcher development programme (RDP) offers workshops and seminars in a range of areas including progression, research management, research dissemination, and careers and personal development. You will also be offered a number of online, self-study courses on BBL, including Research Integrity, Research Skills Toolkit, Research Methods in Literature Review and Principles of Research Methods.

Library services

Brunel's Library is open 24 hours a day, has 400,000 books and 250,000 ebooks, and an annual budget of almost £2m. Subject information Specialists train students in the latest technology, digital literacy, and digital dissemination of scholarly outputs. As well as the physical resources available in the Library, we also provide access to a wealth of electronic resources. These include databases, journals and e-books. Access to these resources has been bought by the Library through subscription and is limited to current staff and students. 

Dedicated research support staff provide guidance and training on open access, research data management, copyright and other research integrity issues.

Find out more: Brunel Library

Careers support

You will receive tailored careers support during your PhD and for up to three years after you complete your research at Brunel. We encourage you to actively engage in career planning and managing your personal development right from the start of your research, even (or perhaps especially) if you don't yet have a career path in mind. Our careers provision includes online information and advice, one-to-one consultations and a range of events and workshops. The Professional Development Centre runs a varied programme of careers events throughout the academic year. These include industry insight sessions, recruitment fairs, employer pop-ups and skills workshops.

Funding Notes

Brunel offers a number of funding options to research students that help cover the cost of their tuition fees, contribute to living expenses or both. See more information here: The UK Government is also offering Doctoral Student Loans for eligible students, and there is some funding available through the Research Councils. Many of our international students benefit from funding provided by their governments or employers. Brunel alumni enjoy tuition fee discounts of 15%.


Previous studies related to polygeneration systems
Ng, K.S., Martinez-Hernandez, E., 2020. Techno-economic assessment of an integrated bio-oil steam reforming and hydrodeoxygenation system for polygeneration of hydrogen, chemicals, and combined heat and power production, in Towards Sustainable Chemical Processes, J. Ren, Y. Wang, and C. He, (Ed.), p. 69-98, Elsevier.
Ng, K.S., Martinez Hernandez, E., 2016. A systematic framework for energetic, environmental and economic (3E) assessment and design of polygeneration systems, Chem Eng Res Des, 106: 1-25.
Ng, K.S., Zhang, N., Sadhukhan, J., 2013. Techno-economic analysis of polygeneration systems with carbon capture and storage and CO2 reuse. Chem Eng J. 219: 96-108.
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