ORCID Profile
0000-0001-6910-7883
Current Organisation
Queensland University of Technology
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Engineering Systems Design | Systems engineering | Agricultural Economics | Engineering practice and education | Environmentally sustainable engineering | Public Health and Health Services | Applied Economics | Environmental and Occupational Health and Safety | Agricultural Biotechnology not elsewhere classified | Building science technologies and systems | Atmospheric Aerosols |
ANZSRC Socio-Economic Objective (SEO)
Environmentally Sustainable Plant Production not elsewhere classified | Plant Production and Plant Primary Products not elsewhere classified | Economic Growth | Commercial Building Management and Services | Environmental Health | Environmentally Sustainable Transport not elsewhere classified
Related Links
Publications
Engine performance and emissions from fuels containing nitrogen and sulphur
Publisher: Elsevier BV
Date: 05-2022
Measuring the regional availability of biomass for biofuels and the potential for microalgae
Publisher: Elsevier BV
Date: 09-2015
Experimental investigations of physical and chemical properties for microalgae HTL bio-crude using a large batch reactor
Publisher: MDPI AG
Date: 05-04-2017
DOI: 10.3390/EN10040467
Microalgae dewatering for biofuels: A comparative techno-economic assessment using single and two-stage technologies
Publisher: Elsevier BV
Date: 08-2019
A comparison of particulate matter and gaseous emission factors from two large cargo vessels during manoeuvring conditions
Publisher: Elsevier BV
Date: 11-2019
Physical and Chemical Stability of Bagasse Biocrude from Liquefaction Stored in Real Conditions
Publisher: American Chemical Society (ACS)
Date: 10-11-2016
The financial feasibility of microalgae biodiesel in an integrated, multi‐output production system
Publisher: Wiley
Date: 30-08-2017
DOI: 10.1002/BBB.1802
Nitrogen and sulphur in algal biocrude: A review of the HTL process, upgrading, engine performance and emissions
Publisher: Elsevier BV
Date: 02-2019
Fuel properties and emission characteristics of essential oil blends in a compression ignition engine
Publisher: Elsevier BV
Date: 02-2019
Techno-economic analysis of the thermal liquefaction of sugarcane bagasse in ethanol to produce liquid fuels
Publisher: Elsevier BV
Date: 08-2018
Fractional distillation of algae based hydrothermal liquefaction biocrude for co-processing
Publisher: Elsevier BV
Date: 05-2021
Correlation and Prediction of Isobaric Vapor–Liquid Equilibria of Binary and Ternary Systems Containing Oxygenated Biofuel Compounds (Butan-2-one + 2-Methylpropan-1-ol + Cyclopentanone) at Atmospheric Pressure
Publisher: American Chemical Society (ACS)
Date: 08-05-2023
Cationic polyacrylamide induced flocculation and turbulent dewatering of microalgae on a Britt Dynamic Drainage Jar
Publisher: Elsevier BV
Date: 02-2020
Whole-genome sequencing reveals transmission of gonococcal antibiotic resistance among men who have sex with men: An observational study
Publisher: BMJ
Date: 15-12-2018
DOI: 10.1136/SEXTRANS-2017-053287
Abstract: Drug-resistant Neisseria gonorrhoeae are now a global public health threat. Direct transmission of antibiotic-resistant gonococci between in iduals has been proposed as a driver for the increased transmission of resistance, but direct evidence of such transmission is limited. Whole-genome sequencing (WGS) has superior resolution to investigate outbreaks and disease transmission compared with traditional molecular typing methods such as multilocus sequence typing (MLST) and N. gonorrhoeae multiantigen sequence (NG-MAST). We therefore aimed to systematically investigate the transmission of N. gonorrhoeae between men in sexual partnerships using WGS to compare isolates and their resistance to antibiotics at a genome level. 458 couples from a large prospective cohort of men who have sex with men (MSM) tested for gonorrhoea together between 2005 and 2014 were included, and WGS was conducted on all isolates from couples where both men were culture-positive for N. gonorrhoeae . Resistance-determining sequences were identified from genome assemblies, and comparison of isolates between and within in iduals was performed by pairwise single nucleotide polymorphism and pangenome comparisons, and in silico predictions of NG-MAST and MLST. For 33 of 34 (97% 95% CI 85% to 100%) couples where both partners were positive for gonorrhoea, the resistance-determining genes and mutations were identical in isolates from each partner (94 isolates in total). Resistance determinants in isolates from 23 of 23 (100% 95% CI 86% to 100%) men with multisite infections were also identical within an in idual. These partner and within-host isolates were indistinguishable by NG-MAST, MLST and whole genomic comparisons. These data support the transmission of antibiotic-resistant strains between sexual partners as a key driver of resistance rates in gonorrhoea among MSM. This improved understanding of the transmission dynamics of N. gonorrhoeae between sexual partners will inform treatment and prevention guidelines.
Solar biorefinery concept for sustainable co-production of microalgae-based protein and renewable fuel
Publisher: Elsevier BV
Date: 09-2022
Diesel engine performance and emissions with fuels derived from waste tyres
Publisher: Springer Science and Business Media LLC
Date: 06-02-2018
DOI: 10.1038/S41598-018-19330-0
Abstract: The disposal of waste rubber and scrap tyres is a significant issue globally disposal into stockpiles and landfill poses a serious threat to the environment, in addition to creating ecological problems. Fuel production from tyre waste could form part of the solution to this global issue. Therefore, this paper studies the potential of fuels derived from waste tyres as alternatives to diesel. Production methods and the influence of reactor operating parameters (such as reactor temperature and catalyst type) on oil yield are outlined. These have a major effect on the performance and emission characteristics of diesel engines when using tyre derived fuels. In general, tyre derived fuels increase the brake specific fuel consumption and decrease the brake thermal efficiency. The majority of studies indicate that NOx emissions increase with waste tyre derived fuels however, a few studies have reported the opposite trend. A similar increasing trend has been observed for CO and CO 2 emissions. Although most studies reported an increase in HC emission owing to lower cetane number and higher density, some studies have reported reduced HC emissions. It has been found that the higher aromatic content in such fuels can lead to increased particulate matter emissions.
Single-step dynamic dewatering of microalgae from dilute suspensions using flocculant assisted filtration
Publisher: Springer Science and Business Media LLC
Date: 12-2020
DOI: 10.1186/S12934-020-01472-4
Abstract: Dewatering constitutes a major challenge to the production of microalgae, accounting for 20–30% of the product cost. This presents a setback for the applicability of microalgae in the development of several sustainable products. This study presents an investigation into the dynamic dewatering of microalgae in a combined flocculation-filtration process. The effect of process conditions on the performance of 12 flocculants and their mixtures was assessed. The mechanism of flocculation via the electrostatic path was dominated by charge neutralization and subsequently followed bridging in a ‘sweep flocculation’ process. Cationic polyacrylamide (CPAM) based flocculants recorded the highest biomass retention with PAM1 and PAM2 attaining 99 and 98% retention with flocculant dosages of 10 and 15 mg/L respectively. Polyvinylamine (PVAM) was also found to improve system stability across the pH range 4–10. Alum was observed to be only effective in charge neutralization, bringing the system close to its isoelectric point (IEP). Chemometric analysis using the multi-criteria decision methods, PROMETHEE and GAIA, was applied to provide a sequential performance ranking based on the net outranking flow (ф) from 207 observations. A graphical exploration of the flocculant performance pattern, grouping the observations into clusters in relation to the decision axis ( $$\\pi$$ π ), which indicated the weighted resultant of most favorable performance for all criteria was explored. CPAM based flocculants and their mixtures demonstrated superior performance due to their viscoelastic behaviour under turbulence. The use of PVAM or alum in mixtures with CPAM reduced the required doses of both flocculants, which will provide beneficial financial impact for largescale microalgae dewatering in a flocculant assisted dynamic filtration process. Chemometric analysis based on the physico-chemical properties of the system provides a time saving assessment of performance across several criteria. The study findings provide an important foundation for flocculant assisted dynamic filtration processes.
Isobaric Vapor–Liquid Equilibria of Binary Systems Containing Oxygenated Biofuel Compounds (Ethanol + Cyclopentanone, Propyl Butanoate + 4-Methylphenol, Cyclopentanone + Propane-1,2-diol) at Atmospheric Pressure
Publisher: American Chemical Society (ACS)
Date: 25-01-2023
A method for HTL biocrude simulation using multi-objective optimisation and fractional distillation
Publisher: Elsevier BV
Date: 2022
Experimental investigation of diesel engine performance, combustion and emissions using a novel series of dioctyl phthalate (DOP) biofuels derived from microalgae
Publisher: MDPI AG
Date: 22-05-2019
DOI: 10.3390/EN12101964
Abstract: Physico-chemical properties of microalgae biodiesel depend on the microalgae species and oil extraction method. Dioctyl phthalate (DOP) is a clear, colourless and viscous liquid as a plasticizer. It is used in the processing of polyvinyl chloride (PVC) resin and polymers. A new potential biofuel, hydrothermally liquefied microalgae bio-oil can contain nearly 11% (by mass) of DOP. This study investigated the feasibility of using up to 20% DOP blended in 80% diesel fuel (v/v) in an existing diesel engine, and assessed the performance and exhaust emissions. Despite reasonable differences in density, viscosity, surface tension, and boiling point, blends of DOP and diesel fuel were found to be entirely miscible and no separation was observed at any stage during prolonged miscibility tests. The engine test study found a slight decrease in peak cylinder pressure, brake, and indicated mean effective pressure, indicated power, brake power, and indicated and brake thermal efficiency with DOP blended fuels, where the specific fuel consumption increased. This is due to the presence of 16.4% oxygen in neat DOP, responsible for the relatively lower heating value, compared to that of diesel. The emission tests revealed a slight increase in nitrogen oxides (NOx) and carbon monoxide (CO) emissions from DOP blended fuels. However, particulate matter (PM) emissions were lower from DOP blended fuels, although some inconsistency in particle number (PN) was present among different engine loads.
The value of externalities for biofuels and implications for policy-led development: a discrete choice experiment with Australian consumers
Publisher: Elsevier BV
Date: 2023
LNG regasification - Effects of project stage decisions on capital expenditure and implications for gas pricing
Publisher: Elsevier BV
Date: 06-2020
Kinetic modelling for thermal decomposition of agricultural residues at different heating rates
Publisher: Springer Science and Business Media LLC
Date: 03-2023
Economic and policy issues in the production of algae-based biofuels: A review
Publisher: Elsevier BV
Date: 10-2016
A review of fractional distillation to improve hydrothermal liquefaction biocrude characteristics; future outlook and prospects
Publisher: Elsevier BV
Date: 11-2019
LNG Regasification Terminals: The Role of Geography and Meteorology on Technology Choices
Publisher: MDPI AG
Date: 16-12-2017
DOI: 10.3390/EN10122152
Effect of depithing on the safety and environmental aspects of bagasse stockpiling
Publisher: Elsevier BV
Date: 09-2013
Effect of sulphur and vanadium spiked fuels on particle characteristics and engine performance of auxiliary diesel engines
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.ENVPOL.2018.08.055
Abstract: Particle emission characteristics and engine performance were investigated from an auxiliary, heavy duty, six-cylinder, turbocharged and after-cooled diesel engine with a common rail injection system using spiked fuels with different combinations of sulphur (S) and vanadium (V) spiking. The effect of fuel S content on both particle number (PN) and mass (PM) was clearly observed in this study. Higher PN and PM were observed for fuels with higher S contents at all engine load conditions. This study also found a correlation between fuel S content and nucleation mode particle number concentration which have more harmful impact on human health than larger particles. The highest PN and PM were observed at partial load conditions. In addition, S in fuel resulted in higher viscosity of spiked fuels, which led to lower engine blow-by. Fuel V content was observed in this study, evidencing that it had no clear effect on engine performance and emissions. Increased engine load also resulted in higher engine blow-by. The lower peak of in-cylinder pressure observed at both pre-mixed and diffusion combustion phases with the spiked fuels may be associated with the lower energy content in the fuel blends compared to diesel fuel.
Techno-economic evaluation of solar-driven ceria thermochemical water-splitting for hydrogen production in a fluidized bed reactor
Publisher: Elsevier BV
Date: 10-2022
A review of hydrothermal liquefaction bio-crude properties and prospects for upgrading to transportation fuels
Publisher: MDPI AG
Date: 07-2015
DOI: 10.3390/EN8076765
Global impacts of recent IMO regulations on marine fuel oil refining processes and ship emissions
Publisher: Elsevier BV
Date: 05-2019
Regenerated cellulose fibers wetspun from different waste cellulose types
Publisher: Informa UK Limited
Date: 21-02-2021
Light scattering study on the size and structure of calcium phosphate/hydroxyapatite flocs formed in sugar solutions
Publisher: Elsevier BV
Date: 02-2007
DOI: 10.1016/J.JCIS.2006.10.010
Abstract: The formation, flocculation and sedimentation of calcium phosphate particles are among the main physico-chemical reactions that occur during the clarification of cane sugar juice. The mechanisms through which processes occur in juice clarification are still poorly understood. This study (being part of a comprehensive investigation to unravel these mechanisms) reports on the size and structure of calcium phosphate particles and aggregates in water and sugar solutions at 20 degrees C using the small angle laser light scattering technique. The average size of the primary calcium phosphate particles was in the range 10.4+/-1.1 microm to 17.5+/-1.2 microm and the scattering exponents, which describe the structure of the calcium phosphate flocs, varied from 1.97 to 2.76. The flocs formed without flocculant are more compact in water than those formed in sugar solution. The compactness of the flocs was also affected by pH of the solution. This effect has been explained by considering the electrical double layer phenomenon.
A comparison of cellulose nanocrystals and cellulose nanofibres extracted from bagasse using acid and ball milling methods
Publisher: IOP Publishing
Date: 05-07-2016
Comparative techno-economic analysis of biofuel production through gasification, thermal liquefaction and pyrolysis of sugarcane bagasse
Publisher: Elsevier BV
Date: 08-2019
Effect of cold start on engine performance and emissions from diesel engines using IMO-Compliant distillate fuels
Publisher: Elsevier BV
Date: 12-2019
DOI: 10.1016/J.ENVPOL.2019.113260
Abstract: Emissions from ships at berth are small compared to the total ship emissions however, they are one of the main contributors to pollutants in the air of densely-populated areas, consequently heavily affecting public health. This is due to auxiliary marine engines being used to generate electric power and steam for heating and providing services. The present study has been conducted on an engine representative of a marine auxiliary, which was a heavy duty, six-cylinder, turbocharged and after-cooled engine with a high pressure common rail injection system. Engine performance and emission characterisations during cold start are the focus of this paper, since cold start is significantly influential. Three tested fuels were used, including the reference diesel and two IMO (International Maritime Organization) compliant spiked fuels. The research engine was operated at a constant speed and 25% load condition after 12 h cooled soak. Results show that during cold start, significant heat generated from combustion is used to heat the engine block, coolant and lubricant. During the first minute, compared to the second minute, emissions of particle number (PN), carbon monoxide (CO), particulate matter (PM), and nitrogen oxides (NO
Performance and Combustion Characteristics Analysis of Multi-Cylinder CI Engine Using Essential Oil Blends
Publisher: MDPI AG
Date: 24-03-2018
DOI: 10.3390/EN11040738
Pressure Filtration of Australian Bagasse Pulp
Publisher: Springer Science and Business Media LLC
Date: 03-09-2011
Aqueous phase recycling in catalytic hydrothermal liquefaction for algal biomass and the effect on elemental accumulation and energy efficiency
Publisher: Elsevier BV
Date: 03-2021
On-board measurements of particle and gaseous emissions from a large cargo vessel at different operating conditions
Publisher: Elsevier BV
Date: 06-2018
DOI: 10.1016/J.ENVPOL.2017.11.008
Abstract: This study investigated particle and gaseous emission factors from a large cargo vessel for her whole voyage including at berth, manoeuvring and cruising. Quantification of these factors assists in minimising the uncertainty in the current methods of exhaust gas emission factor estimation. Engine performance and emissions from the main marine engine were measured on-board while the ship was manoeuvring and cruising at sea. Emissions of an auxiliary engine working at 55% of maximum continuous rating (MCR) were measured when the ship was at actual harbour stopovers. Gaseous and particle emission factors in this study are presented in g kWh
Scrap Tyre Management Pathways and Their Use as a Fuel—A Review
Publisher: MDPI AG
Date: 29-10-2016
DOI: 10.3390/EN9110888
Engine performance and emissions of high nitrogen-containing fuels
Publisher: Elsevier BV
Date: 03-2020
Engineering cellulose nanofibre suspensions to control filtration resistance and sheet permeability
Publisher: Springer Science and Business Media LLC
Date: 02-11-2015
Investigation of microalgae HTL fuel effects on diesel engine performance and exhaust emissions using surrogate fuels
Publisher: Elsevier BV
Date: 11-2017
Effect of Oxygenated Functional Groups in Essential Oils on Diesel Engine Performance, Emissions, and Combustion Characteristics
Publisher: American Chemical Society (ACS)
Date: 09-09-2019
Review on the Use of Essential Oils in Compression Ignition Engines
Publisher: Springer Singapore
Date: 02-11-2019
Techno-economic assessment of solar thermal and alternative energy integration in supercritical water gasification of microalgae
Publisher: Elsevier BV
Date: 02-2021
Matching the biomass to the bioproduct: Summary of up- and downstream bioprocesses
Publisher: De Gruyter
Date: 22-08-2016
Novel biofuels derived from waste tyres and their effects on reducing oxides of nitrogen and particulate matter emissions
Publisher: Elsevier BV
Date: 2020
The effect of flocculants, shear, vacuum and depithing on the formation of thin bagasse pulp pads
Publisher: Walter de Gruyter GmbH
Date: 12-2010
Pulp and paper production from sugarcane bagasse
Publisher: Wiley
Date: 28-03-2016
Hydrothermal technologies for the production of fuels and chemicals from biomass
Publisher: Wiley
Date: 12-12-2012
Liquefaction biocrudes and their petroleum crude blends for processing in conventional distillation units
Publisher: Elsevier BV
Date: 12-2017
Hydrothermal liquefaction of bagasse using ethanol and black liquor as solvents
Publisher: Wiley
Date: 10-09-2015
DOI: 10.1002/BBB.1578
Comparative evaluation of the effect of sweet orange oil-diesel blend on performance and emissions of a multi-cylinder compression ignition engine
Publisher: Author(s)
Date: 2017
DOI: 10.1063/1.4984636
Capacity of quartz fibers with high filtration efficiency for capturing soot particles
Publisher: Springer Science and Business Media LLC
Date: 02-08-2017
An overview of the influence of biodiesel, alcohols, and various oxygenated additives on the particulate matter emissions from diesel engines
Publisher: MDPI AG
Date: 23-05-2019
DOI: 10.3390/EN12101987
Abstract: Rising pollution levels resulting from vehicular emissions and the depletion of petroleum-based fuels have left mankind in pursuit of alternatives. There are stringent regulations around the world to control the particulate matter (PM) emissions from internal combustion engines. To this end, researchers have been exploring different measures to reduce PM emissions such as using modern combustion techniques, after-treatment systems such as diesel particulate filter (DPF) and gasoline particulate filter (GPF), and alternative fuels. Alternative fuels such as biodiesel (derived from edible, nonedible, and waste resources), alcohol fuels (ethanol, n-butanol, and n-pentanol), and fuel additives have been investigated over the last decade. PM characterization and toxicity analysis is still growing as researchers are developing methodologies to reduce particle emissions using various approaches such as fuel modification and after-treatment devices. To address these aspects, this review paper studies the PM characteristics, health issues, PM physical and chemical properties, and the effect of alternative fuels such as biodiesel, alcohol fuels, and oxygenated additives on PM emissions from diesel engines. In addition, the correlation between physical and chemical properties of alternate fuels and the characteristics of PM emissions is explored.
Energy and chemical conversion of five Australian lignocellulosic feedstocks into bio-crude through liquefaction
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7RA02335A
Abstract: Thermal liquefaction of five potential feedstocks namely, banana bunch stems (BBS), pineapple tops (PT), Forage sorghum (FS), bagasse (Ba) and Arundo donax (AD) were examined from an energy perspective at a large laboratory scale.
The fate of nitrogen and sulphur during co-liquefaction of algae and bagasse: Experimental and multi-criterion decision analysis
Publisher: Elsevier BV
Date: 08-2021
Returning biochar to fields: A review
Publisher: Elsevier BV
Date: 08-2017
Effects of process-thermal configuration on energy, exergy, and thermo-economic performance of solar driven supercritical water gasification
Publisher: Elsevier BV
Date: 2022
Cellulose nanofibres from bagasse using a high speed blender and acetylation as a pretreatment
Publisher: Springer Science and Business Media LLC
Date: 22-04-2019
Co-Electrodeposition of Nanostructured Ce-NiOx on Stainless-Steel Substrates for the Oxygen Evolution Reaction under Alkaline Conditions
Publisher: Wiley
Date: 10-2022
Abstract: The development of cost‐effective catalysts that can be fabricated at scale for electrochemical water oxidation is an ongoing challenge. Here it is shown that stainless‐steel AISI316 is an appropriate support electrode for a co‐electrodeposited Ni‐CeO x catalyst for the oxygen evolution reaction (OER) under alkaline conditions. Optimal OER performance is achieved via a cyclic voltammetric deposition protocol rather than constant potential deposition for the catalyst layer. An overpotential of 300 mV at a current density of 10 mA cm −2 is recorded with a Tafel slope of 43 mV dec −1 while the catalyst also demonstrates long‐term stability. It is also found that the catalyst layer changes significantly after the OER. This includes changes to the catalyst morphology, distribution of oxidation state, and speciation as well as the transformation from an entirely amorphous material into one containing crystalline regions. This simple one‐step electrodeposition process on a cost‐effective substrate should, in principle, facilitate the fabrication of low‐cost electrolyzers.
Performance and exhaust emissions of diesel engines using microalgae FAME and the prospects for microalgae HTL biocrude
Publisher: Elsevier BV
Date: 02-2018
The effect of diesel fuel sulphur and vanadium on engine performance and emissions
Publisher: Elsevier BV
Date: 02-2020
Related Organisations
Related Funding Activities
Linkage Projects - Grant ID: LP180100269
Start Date: 10-2019
End Date: 12-2022
Amount: $589,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Training Centres - Grant ID: IC220100012
Start Date: 07-2023
End Date: 07-2028
Amount: $4,939,486.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP200301123
Start Date: 2023
End Date: 06-2026
Amount: $898,013.00
Funder: Australian Research Council
View Funded Activity