Paul S. Fennell
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View article: Compositional Chemical Property Analysis and Evaluation of Liquid Smoke Produced from Microwave-assisted Pyrolysis of Mixtures of Oil Palm Solid Waste
Compositional Chemical Property Analysis and Evaluation of Liquid Smoke Produced from Microwave-assisted Pyrolysis of Mixtures of Oil Palm Solid Waste Open
Microwave-assisted pyrolysis (MAP) was employed to valorise oil palm solid waste, namely empty fruit bunches (EFBs), kernel shells (KSs), and mesocarp fibres (MFs), into liquid smoke at 300 and 400 °C. Unlike conventional pyrolysis systems…
View article: Defining ‘abated’ fossil fuel and industrial process emissions
Defining ‘abated’ fossil fuel and industrial process emissions Open
There is scientific consensus that limiting warming in line with the Paris Agreement goals requires reaching net zero CO2 emissions by mid-century and net negative emissions thereafter. Because of the entrenchment of current fossil fuel en…
View article: Design and operation of a cost-effective reactor for large protic ionic liquid synthesis
Design and operation of a cost-effective reactor for large protic ionic liquid synthesis Open
View article: The acetate anion promotes hydrolysis of poly(ethylene terephthalate) in ionic liquid–water mixtures
The acetate anion promotes hydrolysis of poly(ethylene terephthalate) in ionic liquid–water mixtures Open
A solvent screening shows that ionic liquid water mixtures enable effective hydrolysis of PET to yield terephthalic acid and ethylene glycol when the anion is acetate.
View article: Novel onboard ammonia cracker for light-duty automotive fuel cell vehicles
Novel onboard ammonia cracker for light-duty automotive fuel cell vehicles Open
This work introduces an innovative onboard ammonia cracker module integrated with a 100-kW fuel cell system for light-duty automotive fuel cell vehicles.
View article: Geospatial techno-economic and environmental assessment of different energy options for solid sorbent direct air capture
Geospatial techno-economic and environmental assessment of different energy options for solid sorbent direct air capture Open
Summary: Direct air capture (DAC) is a promising carbon dioxide removal technology, but its effectiveness hinges on access to cheap, low-carbon energy. Here, we present a spatial techno-economic and environmental assessment of the coupling…
View article: Global decarbonization potential of CO <sub>2</sub> mineralization in concrete materials
Global decarbonization potential of CO <sub>2</sub> mineralization in concrete materials Open
CO 2 mineralization products are often heralded as having outstanding potentials to reduce CO 2 -eq. emissions. However, these claims are generally undermined by incomplete consideration of the life cycle climate change impacts, material p…
View article: An Ionic Liquid-Based Biorefinery Approach for Duckweed Utilization
An Ionic Liquid-Based Biorefinery Approach for Duckweed Utilization Open
This study establishes a foundation for the ionic liquid (IL) pretreatment of duckweed biomass. An optimized IL-based process was designed to exploit the unique properties of duckweed including efficient metal removal, potential starch acc…
View article: Novel carbon-free innovation in centralised ammonia cracking for a sustainable hydrogen economy: the hybrid air-volt ammonia cracker (HAVAC) process
Novel carbon-free innovation in centralised ammonia cracking for a sustainable hydrogen economy: the hybrid air-volt ammonia cracker (HAVAC) process Open
The hybrid air-volt ammonia cracker (HAVAC) represents a novel approach to centralised ammonia cracking for hydrogen production, enhancing both efficiency and scalability.
View article: Defining "abated" fossil fuel emissions
Defining "abated" fossil fuel emissions Open
View article: Design and Operation of a Cost-Effective Reactor for Large Protic Ionic Liquid Synthesis
Design and Operation of a Cost-Effective Reactor for Large Protic Ionic Liquid Synthesis Open
View article: Compositional Chemical Property Analysis and Evaluation of Liquid Smoke Produced from Microwave-Assisted Pyrolysis of Binary Mixtures of Oil Palm Solid Waste
Compositional Chemical Property Analysis and Evaluation of Liquid Smoke Produced from Microwave-Assisted Pyrolysis of Binary Mixtures of Oil Palm Solid Waste Open
View article: A three-interface random pore model: the reduction of iron oxide in chemical looping and green steel technologies
A three-interface random pore model: the reduction of iron oxide in chemical looping and green steel technologies Open
Accurate modelling of the gaseous reduction of porous iron oxide powders or fines is important in industry for (i) reinventing the carbon intensive production of iron and steel and (ii) chemical looping technologies in the sphere of carbon…
View article: Enhancement of iron‐based oxygen carriers through alloying with tungsten oxide for chemical looping applications including water splitting
Enhancement of iron‐based oxygen carriers through alloying with tungsten oxide for chemical looping applications including water splitting Open
Chemical looping applications offer a variety of options to decarbonise different industrial sectors, such as iron and steel and hydrogen production. Chemical looping with water splitting (CLWS) is a chemical looping technology, which prod…
View article: Spouted fluidised bed reactor for kinetic measurements of the reduction of Fe2O3 in a CO/ CO2 atmosphere part II: An extended random pore model for solid-state diffusion
Spouted fluidised bed reactor for kinetic measurements of the reduction of Fe2O3 in a CO/ CO2 atmosphere part II: An extended random pore model for solid-state diffusion Open
A generalised random pore model, including both gaseous diffusion and solid-state diffusion in the product layer was developed, and was successfully applied to the reduction of hematite to magnetite by CO. The initial surface rate constant…
View article: Layered double hydroxide‐derived copper‐based oxygen carriers for chemical looping applications: Oxygen release kinetics and impact of loading on long‐term performance
Layered double hydroxide‐derived copper‐based oxygen carriers for chemical looping applications: Oxygen release kinetics and impact of loading on long‐term performance Open
Chemical looping with oxygen uncoupling, a variant of chemical looping combustion, requires chemically and physically stable oxygen carriers over long‐term redox cycling. Copper‐based oxygen carriers are characterised by high oxygen releas…
View article: Modelling and analysis of direct air capture systems in different locations
Modelling and analysis of direct air capture systems in different locations Open
Direct air capture is an important negative emission technology with the aim to reduce carbon dioxide emissions in the atmosphere and to face the current environmental problems such as global warming and climate change. This emerging techn…
View article: A Paris Agreement Compliant Definition for “Abated Fossil Fuels”
A Paris Agreement Compliant Definition for “Abated Fossil Fuels” Open
View article: A novel technological blue hydrogen production process: industrial sorption enhanced autothermal membrane (ISEAM)
A novel technological blue hydrogen production process: industrial sorption enhanced autothermal membrane (ISEAM) Open
We model a novel industrial blue hydrogen production process, the industrial sorption enhanced autothermal membrane (ISEAM) process, with the potential to produce constant fuel cell grade hydrogen with 99.99% purity, regardless of upstream…
View article: Adsorption of CO2 and N2 on bimetallic Mg-Al hydrotalcites and Z-13X zeolites under high pressure and moderate temperatures
Adsorption of CO2 and N2 on bimetallic Mg-Al hydrotalcites and Z-13X zeolites under high pressure and moderate temperatures Open
The adsorption of carbon dioxide on a commercial hydrotalcite (HT) was investigated using gravimetric analysis at 473 K, 573 K and 673 K and pressures up to 10 bar. The CO2 adsorption performance of HT was correlated with a wide range of p…
View article: Air-source heat pumps for water heating at a high temperature: State of the art
Air-source heat pumps for water heating at a high temperature: State of the art Open
View article: Geospatial analysis of regional climate impacts to accelerate cost-efficient direct air capture deployment
Geospatial analysis of regional climate impacts to accelerate cost-efficient direct air capture deployment Open
View article: Solid-sorbent direct air capture global performance data
Solid-sorbent direct air capture global performance data Open
Global performance data for solid-sorbent direct air capture utilizing amine-functionalized sorbent (i.e., Lewatit VP OC 1065) in a steam-assisted vacuum-pressure temperature swing adsorption cycle.
View article: Solid-sorbent direct air capture global performance data
Solid-sorbent direct air capture global performance data Open
Global performance data for solid-sorbent direct air capture utilizing amine-functionalized sorbent (i.e., Lewatit VP OC 1065) in a steam-assisted vacuum-pressure temperature swing adsorption cycle.
View article: Precursor engineering of hydrotalcite-derived redox sorbents for reversible and stable thermochemical oxygen storage
Precursor engineering of hydrotalcite-derived redox sorbents for reversible and stable thermochemical oxygen storage Open
View article: Hydrotalcite-Derived Copper-Based Oxygen Carrier Materials for Efficient Chemical-Looping Combustion of Solid Fuels with CO<sub>2</sub> Capture
Hydrotalcite-Derived Copper-Based Oxygen Carrier Materials for Efficient Chemical-Looping Combustion of Solid Fuels with CO<sub>2</sub> Capture Open
Chemical-looping combustion (CLC) is a promising technology that utilizes metal oxides as oxygen carriers for the combustion of fossil fuels to CO2 and H2O, with CO2 readily sequestrated after the condensat…
View article: Analysis of Technologies for Carbon Dioxide Capture from the Air
Analysis of Technologies for Carbon Dioxide Capture from the Air Open
The increase in CO2 concentration in the atmosphere has prompted the research community to find solutions for this environmental problem, which causes climate change and global warming. CO2 removal through the use of negative emissions tec…
View article: Simulation of direct separation technology for carbon capture and storage in the cement industry
Simulation of direct separation technology for carbon capture and storage in the cement industry Open
This research investigated the application of the direct separation reactor (DSR) to the cement industry to capture a large portion of the process-derived CO2. The case herein assumed a DSR fuelled by natural gas, and downstream rotary kil…
View article: Reclamation of nutrients, carbon, and metals from compromised surface waters fated to the Salton Sea: Biomass production and ecosystem services using an attached periphytic algae flow-way
Reclamation of nutrients, carbon, and metals from compromised surface waters fated to the Salton Sea: Biomass production and ecosystem services using an attached periphytic algae flow-way Open
View article: Modeling and Evaluation of Ash-Forming Element Fate and Occurrence in Woody Biomass Combustion in an Entrained-Flow Burner
Modeling and Evaluation of Ash-Forming Element Fate and Occurrence in Woody Biomass Combustion in an Entrained-Flow Burner Open
Biomass combustion equipment is often susceptible to ash deposition due to the relatively significant quantities of potassium, silicon, and other ash-forming elements in biomass. To evaluate the propensity for ash deposition resulting from…