Xihui Kang
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View article: Distillable amine-based solvents for effective pretreatment of multiple biomass feedstocks
Distillable amine-based solvents for effective pretreatment of multiple biomass feedstocks Open
Exploring the potential of advanced distillable solvents as efficient biomass pretreatment agents is critical for biorefineries, enhancing fermentable sugar yields while enabling solvent recovery and recycling without suffering significant…
View article: Storage-Induced Collapse of Lignin Macromolecular Structure and Its Impacts on the Biorefinery
Storage-Induced Collapse of Lignin Macromolecular Structure and Its Impacts on the Biorefinery Open
Lignin plays a vital role in the economics of biorefineries, serving as a source of process energy and a feedstock for sustainable fuels and chemical production. While understanding lignin's chemical composition is crucial, emerging eviden…
View article: Economic and environmental viability of biofuel production from organic wastes: A pathway towards competitive carbon neutrality
Economic and environmental viability of biofuel production from organic wastes: A pathway towards competitive carbon neutrality Open
Production of renewable C1 transport biofuels (such as biomethane and biomethanol) through the integration of anaerobic digestion (AD) with carbon capture, utilization and sequestration technologies may offer a solution to reduce greenhous…
View article: Biochar facilitates biofuel production through batch single-stage and two-stage digestion of grass silage and cattle slurry
Biochar facilitates biofuel production through batch single-stage and two-stage digestion of grass silage and cattle slurry Open
Grass silage and cattle slurry are the most abundant feedstocks for biogas in an Irish context. This work describes how to optimize biomethane yield. Hydrolysis and biomethane yields from co-digestion of grass silage and slurry were enhanc…
View article: Electrofuels in a circular economy: A systems approach towards net zero
Electrofuels in a circular economy: A systems approach towards net zero Open
Decarbonising the hard-to-abate sectors will be necessary in realising a future net-zero economy. Electrofuels store electricity as low carbon energy vectors such as hydrogen or methane which can be used in areas where electrification is n…
View article: Renewable deep eutectic solvents pretreatment improved the efficiency of anaerobic digestion by lignin extraction from willow
Renewable deep eutectic solvents pretreatment improved the efficiency of anaerobic digestion by lignin extraction from willow Open
Lignin extraction from lignocellulosic biomass can enhance its bioconversion efficiency, whilst the recovered lignin can provide added economic value. This study comprehensively investigated the impacts of short-chain carboxylic acid-based…
View article: Boosting biogas production from recalcitrant lignin-based feedstock by adding lignin-derived carbonaceous materials within the anaerobic digestion process
Boosting biogas production from recalcitrant lignin-based feedstock by adding lignin-derived carbonaceous materials within the anaerobic digestion process Open
Lignocellulosic biomass can add to the worldwide resource of biogas; however, the aromatic structure of lignin is recalcitrant which impairs biodegradation. Direct interspecies electron transfer (DIET) may overcome limitations in the biode…
View article: Effects of Iron Oxides on the Anaerobic Codigestion Performances of the <i>Pennisetum</i> Hybrid and Kitchen Waste
Effects of Iron Oxides on the Anaerobic Codigestion Performances of the <i>Pennisetum</i> Hybrid and Kitchen Waste Open
The addition of iron oxides in anaerobic digestion can increase conversion efficiency. In this study, we investigated the effects of the addition of Fe2O3, Fe2O3 nanoparticles, Fe3O4, and Fe3O4 nanoparticles with different concentrations (…
View article: An assessment of how the properties of pyrochar and process thermodynamics impact pyrochar mediated microbial chain elongation in steering the production of medium-chain fatty acids towards n-caproate
An assessment of how the properties of pyrochar and process thermodynamics impact pyrochar mediated microbial chain elongation in steering the production of medium-chain fatty acids towards n-caproate Open
Microbial chain elongation fermentation is an alternative technology for medium-chain fatty acid (MCFA) production. This paper proposed the addition of pyrochar and graphene in chain elongation to improve MCFA production using ethanol and …
View article: Towards green whiskey production: Anaerobic digestion of distillery by-products and the effects of pretreatment
Towards green whiskey production: Anaerobic digestion of distillery by-products and the effects of pretreatment Open
Using renewable biogas from the anaerobic digestion of distillery by-products as a low-carbon heat source can decarbonize the distillery process and support the distillery industry to transition to a more sustainable production process. Th…
View article: Co-production of hydrochar, levulinic acid and value-added chemicals by microwave-assisted hydrothermal carbonization of seaweed
Co-production of hydrochar, levulinic acid and value-added chemicals by microwave-assisted hydrothermal carbonization of seaweed Open
Seaweed is considered a third-generation biomass for transport biofuel production with great potential for bioenergy and biorefinery applications. Microwave-assisted hydrothermal carbonization (HTC) offers a conversion route for seaweed va…
View article: Improvement in biohydrogen and volatile fatty acid production from seaweed through addition of conductive carbon materials depends on the properties of the conductive materials
Improvement in biohydrogen and volatile fatty acid production from seaweed through addition of conductive carbon materials depends on the properties of the conductive materials Open
Fermentative production of biohydrogen and volatile fatty acids (VFAs) from advanced feedstocks such as seaweed provides opportunities in the carbon-neutral bioeconomy. The gap in the state of the art exists in overcoming both the low ferm…
View article: Improved robustness of ex-situ biological methanation for electro-fuel production through the addition of graphene
Improved robustness of ex-situ biological methanation for electro-fuel production through the addition of graphene Open
Ex-situ biomethanation (CO2 + 4H(2)-> CH4 + 2H(2)O) can simultaneously achieve renewable electricity storage and CO2 valorisation. However, fluctuations in variable renewable electricity may lead to intermittent hydrogen supply, which i…
View article: Assessment of Coproduction of Ethanol and Methane from <i>Pennisetum purpureum</i>: Effects of Pretreatment, Process Performance, and Mass Balance
Assessment of Coproduction of Ethanol and Methane from <i>Pennisetum purpureum</i>: Effects of Pretreatment, Process Performance, and Mass Balance Open
To overcome the structural complexity and improve the bioconversion efficiency of Pennisetum purpureum into bioethanol or/and biomethane, the effects of ensiling pretreatment, NaOH pretreatment, and their combination on digestion performan…
View article: Assessment of pretreatment and digestion temperature on anaerobic digestion of whiskey byproducts and microbial taxonomy
Assessment of pretreatment and digestion temperature on anaerobic digestion of whiskey byproducts and microbial taxonomy Open
The effects of steam and sulfuric acid pretreatment on anaerobic digestion (AD) of whiskey byproducts (including draff, thin and thick stillage) were investigated in order to improve the digestion performance under both mesophilic and ther…
View article: Opportunities and barriers for biofuel and bioenergy production from poplar
Opportunities and barriers for biofuel and bioenergy production from poplar Open
Due to the growing demand for transportation fuels and concerns about the greenhouse gas emissions derived from the use of fossil fuels, the development of alternative fuels from renewable resources, such as lignocellulosic biomass, is of …
View article: Competing Reactions Limit Production of Sugars in Hydrothermal Hydrolysis of Grass Silage: An Assessment of the Effect of Temperature on Sugar Production and Parasitic Energy Demand
Competing Reactions Limit Production of Sugars in Hydrothermal Hydrolysis of Grass Silage: An Assessment of the Effect of Temperature on Sugar Production and Parasitic Energy Demand Open
Grass represents a major renewable feedstock in temperate climate zones, but its efficient utilization is challenging in biorefineries and advanced biofuels due to its structural recalcitrance. Here hydrothermal hydrolysis (100–180°C, for …
View article: Anaerobic digestion performance and microbial community structures in biogas production from whiskey distillers organic by-products
Anaerobic digestion performance and microbial community structures in biogas production from whiskey distillers organic by-products Open
By-product and residue management are significant economic and environmental considerations in whiskey production. Incorporation of sustainable production methods in the industry can reduce costs in the areas of energy consumption and wast…
View article: Effect of Organic Loading Rate and Temperature on the Anaerobic Digestion of Municipal Solid Waste: Process Performance and Energy Recovery
Effect of Organic Loading Rate and Temperature on the Anaerobic Digestion of Municipal Solid Waste: Process Performance and Energy Recovery Open
This study investigated the effects of organic loading rates (OLRs) and temperature on the performance and stability of anaerobic digestion treating the organic fraction of municipal solid waste (OFMSW) in a semi-continuous mode. Furthermo…
View article: Microwave assisted low-temperature hydrothermal treatment of solid anaerobic digestate for optimising hydrochar and energy recovery
Microwave assisted low-temperature hydrothermal treatment of solid anaerobic digestate for optimising hydrochar and energy recovery Open
With the growth of anaerobic digestion (AD) for biogas production, associated increasing digestate production may cause environmental problems if the increasing agricultural land required for digestate application is limited. An alternativ…
View article: A perspective on decarbonizing whiskey using renewable gaseous biofuel in a circular bioeconomy process
A perspective on decarbonizing whiskey using renewable gaseous biofuel in a circular bioeconomy process Open
Low-carbon circular economy strategies within the whiskey industry necessitate minimal use of fossil-based energy including heat and electricity. Renewable energy generated from process by-products such as draff and pot ale offers opportun…