Dr Jude Onwudili

Lecturer in Chemical Engineering Aston University

  • Birmingham

Dr Onwudili is an experienced researcher, having worked on a number of projects on catalytic and non-catalytic thermochemic processing.

Contact

Aston University

View more experts managed by Aston University

View all Experts

Spotlight

5 min

Homes heated by human sewage could be a reality thanks to Aston University

Project to transform sewage sludge into clean water and energy awarded a share of £4.5 million by Ofwat Involves extracting energy from the waste produced during sewage and water treatment Gases obtained can be used to power engines or heat people’s homes. An Aston University project that could transform sewage sludge into clean water and energy has been awarded a share of £4.5 million by Ofwat. The University project with engineering consultancy ICMEA-UK involves extracting energy from the waste produced during sewage and water treatment and transforming it into hydrogen and/or methane. The gases can then be used to power engines or heat people’s homes. The aim is to create a sustainable and cost-efficiently run wastewater processes, plus extra energy. The initiative was one of ten winners of Ofwat’s Water Discovery Challenge, of which the Aston University scientists and two industrial partners have been awarded £427,000. Dr Jude Onwudili based at Aston University’s Energy and Bioproducts Research Institute (EBRI) is leading the team of scientists who will work with the partners to develop a trial rig to transform solid residues from wastewater treatment plants to hydrogen and/or methane. The two-stage process will involve the initial transformation of organic components in the sludge into liquid intermediates, which will then be converted to the fuel gases in a second stage. The project is called REvAR (Renewable Energy via Aqueous-phase Reforming), and Dr Onwudili will be working with lead partner and engineering consultancy company ICMEA-UK Limited and sustainable infrastructure company Costain. REVAR combines the use of hot-pressurised water or hydrothermal conditions with catalysts to achieve high conversion efficiency. The technique can treat sewage sludge in just minutes, and it is hoped that it will replace existing processes. In 2013, a Chartered Institution of Water and Environmental Management report stated that the sector is the fourth most energy intensive industry in the UK. Dr Onwudili said: “This project is important because millions of tonnes of sewage sludge are generated in the UK each year and the water industry is struggling with how to effectively manage them as waste. “Instead, they can be converted into valuable feedstocks which are used for producing renewable fuel gases, thereby increasing the availability of feedstocks to meet UK decarbonisation targets through bioenergy. “We will be taking a waste product and recovering two important products from it: clean water and renewable energy. Overall, the novel technology will contribute towards meeting UK Net Zero obligations by 2050 and ties in with the University’s purpose to make our world a better place through education, research and innovation.” The Water Discovery Challenge aims to accelerate the development and adoption of promising new innovations for the water sector. Over the next six months, winners will also receive non-financial support and will be able to pitch their projects to potential water company partners and/or investors. The 10 winning teams are from outside the water industry and were chosen because of their projects’ potential to help solve the biggest challenges facing the sector.   The competition is part of the Ofwat Innovation Fund, run by the water regulator Ofwat, with Challenge Works, Arup and Isle Utilities and is the first in the water sector to invite ideas from innovators across industries. Helen Campbell, senior director for sector performance at Ofwat, said: “This competition was about reaching new innovators from outside the sector with different approaches and new ideas, and that’s exactly what the winners are doing. “The products and ideas recognised in this cross-sector challenge will equip water companies to better face challenges of the future – including achieving sustainability goals and meeting net zero targets – all while providing the highest-quality product for consumers.” ENDS A Blueprint For Carbon Emissions Reduction in the UK Water Industry The Chartered Institution of Water and Environmental Management https://www.ciwem.org/assets/pdf/Policy/Reports/A-Blueprint-for-carbon-emissions-reductions-in-the-water-industry.pdf Ofwat Innovation Fund Ofwat, the Water Services Regulation Authority for England and Wales, has established a £200 million Innovation Fund to grow the water sector’s capacity to innovate, enabling it to better meet the evolving needs of customers, society and the environment. The Innovation Fund, delivered in partnership with Challenge Works (formerly known as Nesta Challenges) and supported by Arup and Isle Utilities, is designed to complement Ofwat’s existing approach to innovation and to help deliver against Ofwat’s strategy which highlights the role of innovation in meeting many of the challenges the sector faces. About ICMEA-UK Based in Sheffield, in the North of England, ICMEA-UK is the UK arm of an established Italian innovative engineering company ICMEA SRL. They are an innovative Engineering consultancy company, and work in partnership with a range of other organisations to provide innovative, bespoke solutions to problems where an Engineering solution is required. About Costain Costain helps to improve people’s lives by creating connected, sustainable infrastructure that enables people and the planet thrive. They shape, create, and deliver pioneering solutions that transform the performance of the infrastructure ecosystem across the UK’s energy, water, transportation, and defence markets. They are organised around their customers anticipating and solving challenges and helping to improve performance. By bringing together their unique mix of construction, consulting, and digital experts they engineer and deliver sustainable, efficient, and practical solutions. About Aston University For over a century, Aston University’s enduring purpose has been to make our world a better place through education, research and innovation, by enabling our students to succeed in work and life, and by supporting our communities to thrive economically, socially and culturally. Aston University’s history has been intertwined with the history of Birmingham, a remarkable city that once was the heartland of the Industrial Revolution and the manufacturing powerhouse of the world. Born out of the First Industrial Revolution, Aston University has a proud and distinct heritage dating back to our formation as the School of Metallurgy in 1875, the first UK College of Technology in 1951, gaining university status by Royal Charter in 1966, and becoming The Guardian University of the Year in 2020. Building on our outstanding past, we are now defining our place and role in the Fourth Industrial Revolution (and beyond) within a rapidly changing world. For media inquiries in relation to this release, contact Nicola Jones, Press and Communications Manager, on (+44) 7825 342091 or email: n.jones6@aston.ac.uk

Dr Jude Onwudili

3 min

Aston University to help power Indonesia with affordable energy made from rice straw

Project to convert unwanted rice straw into cheap energy on a commercial scale Most rice straw in Indonesia is burned causing pollution and health problems Project will almost double affordable energy captured from waste. Scientists at the Energy and Bioproducts Institute at Aston University are to start a project to convert Indonesia’s unwanted rice straw into low-cost energy on a commercial scale. Each year the country produces 100 million tonnes of the rice waste, of which 60% is burned in open fields, causing air pollution and has even been linked to lung cancer. The amount burned is equivalent to approximately 85 Terawatts of electricity, which is enough to power Indonesia’s households 10 times over. A consortium which includes Aston University aims to develop processes to capture more affordable energy from rice straw than ever before and demonstrate that it can be done on a commercial scale. Part of the process involves a biomass conversion technology called pyrolysis. This involves heating organic waste materials to high temperatures of around 500 °C to break them down, producing vapour and solid products. Some of the vapour may be condensed into a liquid product called pyrolysis oil or pyrolysis bio-oil. Both the pyrolysis vapour and liquid bio-oil can be converted to electricity. Current methods convert just 35% of the thermal energy of rice straw to affordable electricity. However, a newly patented combustion engine designed by consortium member, UK-based Carnot Limited, could see that doubled to 70%. Energy extracted this way could help low and middle-income countries create their own locally generated energy, contribute to net zero by 2050, create new jobs and improve the health of locals. The project will help develop a business model which could support companies and local authorities to produce local, cheap energy in Indonesia, and other countries with biomass capacity. Three academic experts from different disciplines at Aston University are involved in this initial project, which focuses on Indonesia’s Lombok Island. Dr Jude Onwudili, Dr Muhammad Imran and Dr Mirjam Roeder are based at Aston University’s Energy and Bioproducts Research Institute (EBRI). Dr Jude Onwudili who is leading the team said: “This project has huge potential commercialisation of this combined technology will have significant economic benefits for the people of Indonesia through direct and indirect job creation, including the feedstock supply chain and electricity distribution and sales. “About one million Indonesian homes lack access to energy and Indonesia's 6,000 inhabited islands make sustainable infrastructure development challenging in areas such as Lombok Island. “The new techniques being explored could reduce environmental pollution, contribute to net zero and most importantly, provide access to affordable energy from sustainable local agricultural waste. “Aston University is a global leader in bioenergy and energy systems, and I am delighted we received funding to explore this area.” Over a power plant’s life, the project team have calculated that biomass produces cheaper electricity (approx. $4.3$/kWh) compared to solar (approx. $6.6/kWh), geothermal (approx. $6.9/kWh), coal (approx.$7.1/kWh), wind (approx. $8/kWh) and subsidised gas (approx.$8.4ckWh). The project will start in April 2023 with a total of £1.5 million funding for the four partners from Innovate UK. Alongside Carnot Limited, the Aston University scientists will be working with two other UK-based businesses to deliver the project, PyroGenesys and Straw Innovations. PyroGenesys specialises in PyroChemy technology which will convert 70% of the rice straw into vapour or bio-oil for electricity production, with the remainder converted into nutrient-rich biochar, which can be sold back for use as fertiliser on the rice farms. Straw Innovations will contribute their rice straw harvesting and collection expertise, with their many years of similar operations in Asia.

Dr Jude OnwudiliDr Mirjam Röder

Media

Social

Biography

Dr Onwudili is a Senior Lecturer in Chemical Engineering in the Deprtament of Chemical Engineering & Applied Chemistry. He was previously a Research Fellow at the renowned Energy Research Institute, School of Chemical & Process Engineering at the University of Leeds, under the supervision of Professor Paul T. Williams.

Onwudili is an experienced researcher, having worked on a number of EPSRC-funded and industrially-funded research projects on catalytic and non-catalytic thermochemical (hydrothermal, combustion, pyrolysis and gasification) processing of biomass, plastics, algae and municipal solid wastes for the production of fuels, chemicals and materials.

He is currently developing and leading a Sustainable Chemicals Laboratory at the European Bioenergy Research Institute, Aston University.

Areas of Expertise

Advanced Renewable (Bioenergy) Technologies
Renewable Energy Technologies‎
Chemical Product Design
Chemical Process Design
Advanced Process Design

Education

University of Leeds

PhD

2005

University of Ibadan

BSc

Affiliations

  • Associate Member – Institution of Chemical Engineers (IChemE)
  • Full Member- Royal Society of Chemistry (RSC)
  • Full Member – Society of Chemical Industry (SCI)
  • Senior Fellow – Higher Education Academy (HEA)

Articles

Comparative techno-economic modelling of large-scale thermochemical biohydrogen production technologies to fuel public buses: A case study of West Midlands region of England

Renewable Energy

2022

This work presents techno-economic modelling of four thermochemical technologies that could produce over 22,000 tonnes/year of hydrogen from biomass for >2000 public transport buses in West Midlands region, UK. These included fluidised bed (FB) gasification, fast pyrolysis-FB gasification, fast pyrolysis-steam reforming, and steam reforming of biogas from anaerobic digestion (AD). Each plant was modelled on ASPEN plus with and without carbon capture and storage (CCS), and their process flow diagrams, mass and energy balances used for economic modelling. Payback periods ranged from 5.10 to 7.18 years. For operations with CCS, in which the captured CO2 was sold, FB gasification gave the lowest minimum hydrogen selling price of $3.40/kg. This was followed by AD-biogas reforming ($4.20/kg), while pyrolysis-gasification and pyrolysis-reforming gave $4.83/kg and $7.30/kg, respectively. Hydrogen selling prices were sensitive to raw material costs and internal rates of return, while revenue from selling CO2 was very important to make biohydrogen production cost competitive. FB gasification and AD-biogas reforming with CCS could deliver hydrogen at less than or around $4/kg when CO2 was sold at above $75/tonne. This study showed that thermochemical technologies could produce biohydrogen at competitive prices to extend the current use of electrolytic hydrogen-fuelled buses in Birmingham to the wider West Midlands region.

View more

Process modelling and economic evaluation of biopropane production from aqueous butyric acid feedstock

Renewable Energy

2022

Catalytic hydrothermal decarboxylation of biomass-derived butyric acid can produce renewable biopropane as a direct drop-in replacement fuel for liquefied petroleum gases. In this present study, experimental results from a batch reactor have been used to develop a hypothetical continuous process to deliver 20,000 tonnes/year of biopropane, as base-case capacity, from 10 wt% aqueous butyric acid. A combination of process synthesis and ASPEN Hysys simulation have been used to formulate a process flowsheet, after equipment selection. The flowsheet has been used to carry out economic analyses, which show that the minimum selling price of biopropane is $2.51/kg without selling the CO2 co-product. However, with the incorporation of existing UK renewable energy incentives, the minimum selling price can reduce to $0.98/kg, which is cheaper than the current $1.25/kg selling price for fossil liquefied petroleum gases. Sensitivity analysis based on raw material costs and production capacities show profound influence on the minimum selling price, with strong potentials to making biopropane competitive without incentivisation, whereas the influence of selling CO2 is marginal. While this biopropane technology appears promising, it still requires more detailed technical and process data, life-cycle analysis and detail economic costings and testing at a pilot-scale prior to commercial exploitation.

View more

Optimisation of Propane Production from Hydrothermal Decarboxylation of Butyric Acid Using Pt/C Catalyst: Influence of Gaseous Reaction Atmospheres

Energies

2021

The displacement and eventual replacement of fossil-derived fuel gases with biomass-derived alternatives can help the energy sector to achieve net zero by 2050. Decarboxylation of butyric acid, which can be obtained from biomass, can produce high yields of propane, a component of liquefied petroleum gases. The use of different gaseous reaction atmospheres of nitrogen, hydrogen, and compressed air during the catalytic hydrothermal conversion of butyric acid to propane have been investigated in a batch reactor within a temperature range of 200–350 °C. The experimental results were statistically evaluated to find the optimum conditions to produce propane via decarboxylation while minimizing other potential side reactions. The results revealed that nitrogen gas was the most appropriate atmosphere to control propane production under the test conditions between 250 °C and 300 °C, during which the highest hydrocarbon selectivity for propane of up to 97% was achieved. Below this temperature range, butyric acid conversion remained low under the three reaction atmospheres. Above 300 °C, competing reactions became more significant. Under compressed air atmosphere, oxidation to CO2 became dominant, and under nitrogen, thermal cracking of propane became significant, producing both ethane and methane as side products. Interestingly, under a hydrogen atmosphere, hydrogenolytic cracking propane became dominant, leading to multiple C–C bond cleavages to produce methane as the main side product at 350 °C.

View more

Powered by