Dr WILLIAM MEREDITH's Outputs (44)

Co-treatment of municipal solid waste incineration fly ash and alumina-/silica-containing waste: A critical review (2024)
Journal Article
Yang, D., Kow, K. W., Wang, W., Meredith, W., Zhang, G., Mao, Y., & Xu, M. (2024). Co-treatment of municipal solid waste incineration fly ash and alumina-/silica-containing waste: A critical review. Journal of Hazardous Materials, 479, Article 135677. https://doi.org/10.1016/j.jhazmat.2024.135677

Municipal solid waste incineration fly ash (MSWI-FA) is a hazardous by-product of the incineration process, characterized by elevated levels of heavy metals, chlorides, and dioxins. With a composition high in calcium but low in silicon/aluminum, MSWI... Read More about Co-treatment of municipal solid waste incineration fly ash and alumina-/silica-containing waste: A critical review.

Fast pyrolysis of agricultural residues: Reaction mechanisms and effects of feedstock properties and microwave operating conditions on the yield and product composition (2023)
Journal Article
Silos-Llamas, A. K., Sudibyo, H., Hernández-Montoya, V., Meredith, W., & Durán-Jiménez, G. (2023). Fast pyrolysis of agricultural residues: Reaction mechanisms and effects of feedstock properties and microwave operating conditions on the yield and product composition. Journal of Analytical and Applied Pyrolysis, 175, Article 106217. https://doi.org/10.1016/j.jaap.2023.106217

Fundamental understanding of the pyrolysis process plays an indispensable role in valorization of wastes and the development of novel sustainable technologies. This study introduces a novel approach by investigating the reaction mechanisms involve in... Read More about Fast pyrolysis of agricultural residues: Reaction mechanisms and effects of feedstock properties and microwave operating conditions on the yield and product composition.

Low-temperature chemical looping oxidation of hydrogen for space heating (2023)
Journal Article
Güleç, F., Okolie, J. A., Clough, P. T., Erdogan, A., Meredith, W., & Snape, C. E. (2023). Low-temperature chemical looping oxidation of hydrogen for space heating. Journal of the Energy Institute, 110, Article 101355. https://doi.org/10.1016/j.joei.2023.101355

Chemical looping combustion (CLC) is an advanced combustion process in which the combustion reaction splits into two parts; in the first reaction metal oxides are used as oxygen suppliers for fuel combustion and then in the second reaction, reduced m... Read More about Low-temperature chemical looping oxidation of hydrogen for space heating.

A comprehensive analysis on the synthesis of value-added chemicals via slow pyrolysis: Valorisation of rapeseed residue, whitewood, and seaweed (Laminaria digitata) (2023)
Journal Article
Güleç, F., Sudibyo, H., Kostas, E. T., Williams, O., Samson, A., Meredith, W., & Lester, E. (2023). A comprehensive analysis on the synthesis of value-added chemicals via slow pyrolysis: Valorisation of rapeseed residue, whitewood, and seaweed (Laminaria digitata). Journal of Analytical and Applied Pyrolysis, 173, Article 106093. https://doi.org/10.1016/j.jaap.2023.106093

Pyrolysis has emerged as a crucial thermochemical conversion technology in the field of biomass processing. Maximising the valorisation of biomass is an essential area of investigation, as it plays a pivotal role in understanding the economic viabili... Read More about A comprehensive analysis on the synthesis of value-added chemicals via slow pyrolysis: Valorisation of rapeseed residue, whitewood, and seaweed (Laminaria digitata).

Geochemical evaluation and hydrocarbon generation potential of the Upper Cretaceous–Pliocene succession, offshore Nile Delta, Egypt (2023)
Journal Article
Farouk, S., Khairy, A., Shehata, A. M., Uguna, C. N., El Sheennawy, T., Salama, A., …Meredith, W. (2023). Geochemical evaluation and hydrocarbon generation potential of the Upper Cretaceous–Pliocene succession, offshore Nile Delta, Egypt. Journal of African Earth Sciences, 205, Article 105004. https://doi.org/10.1016/j.jafrearsci.2023.105004

The offshore Nile Delta is a prominent petroleum province; nevertheless, previous research focused mainly on evaluation of Miocene–Pliocene possible source rocks because of lack of data. The current study is the first to evaluate organic geochemical... Read More about Geochemical evaluation and hydrocarbon generation potential of the Upper Cretaceous–Pliocene succession, offshore Nile Delta, Egypt.

Geochemical assessment and hydrocarbon potential of Oligocene–Pliocene source rocks from northeast onshore Nile Delta, Egypt (2023)
Journal Article
Khairy, A., El Diasty, W. S., Uguna, C. N., Peters, K. E., Vane, C. H., Snape, C. E., & Meredith, W. (2023). Geochemical assessment and hydrocarbon potential of Oligocene–Pliocene source rocks from northeast onshore Nile Delta, Egypt. International Journal of Coal Geology, 274, Article 104283. https://doi.org/10.1016/j.coal.2023.104283

Recent exploration in the Nile Delta Basin has led to major oil and gas discoveries; however, source–reservoir relationships in the onshore part of the basin are still ambiguous. This work involves a comprehensive geochemical assessment of possible O... Read More about Geochemical assessment and hydrocarbon potential of Oligocene–Pliocene source rocks from northeast onshore Nile Delta, Egypt.

Correction to: Comparison of bio-oils derived from crop digestate treated through conventional and microwave pyrolysis as an alternative route for further waste valorization (2023)
Journal Article
Perez, N. D., Lindfors, C., van den Broek, L. A., van der Putten, J., Meredith, W., & Robinson, J. (2024). Correction to: Comparison of bio-oils derived from crop digestate treated through conventional and microwave pyrolysis as an alternative route for further waste valorization. Biomass Conversion and Biorefinery, 14(14), 15755-15755. https://doi.org/10.1007/s13399-023-03868-9

In this article the Table 3 with SD± was not properly adjusted. The original article has been corrected.

CO2 capture from fluid catalytic crackers via chemical looping combustion: Regeneration of coked catalysts with oxygen carriers (2023)
Journal Article
Güleç, F., Meredith, W., & Snape, C. E. (2023). CO2 capture from fluid catalytic crackers via chemical looping combustion: Regeneration of coked catalysts with oxygen carriers. Journal of the Energy Institute, 107, Article 101187. https://doi.org/10.1016/j.joei.2023.101187

Oil refineries are responsible for ∼5% of total global CO2 emissions and approximately 25–35% of these emissions are released from a single unit called Fluid Catalytic Cracking (FCC). Chemical Looping Combustion (CLC) has been recently proposed as a... Read More about CO2 capture from fluid catalytic crackers via chemical looping combustion: Regeneration of coked catalysts with oxygen carriers.

Comparison of bio-oils derived from crop digestate treated through conventional and microwave pyrolysis as an alternative route for further waste valorization (2023)
Journal Article
Diaz Perez, N., Lindfors, C., van den Broek, L. A., van der Putten, J., Meredith, W., & Robinson, J. (2023). Comparison of bio-oils derived from crop digestate treated through conventional and microwave pyrolysis as an alternative route for further waste valorization. Biomass Conversion and Biorefinery, 14, 15739-15754. https://doi.org/10.1007/s13399-022-03712-6

A total of 120,000 tonnes per year of crop waste from contaminated land has been used as a feedstock for anaerobic digestion (AD). This produces only around 20% of biogas from the total crop and results in a large amount of digestate with heavy metal... Read More about Comparison of bio-oils derived from crop digestate treated through conventional and microwave pyrolysis as an alternative route for further waste valorization.

The productivity effects of macroalgal biochar from Ulva (Linnaeus) bloom species on Arabidopsis thaliana (Linnaeus) seedlings (2022)
Journal Article
Kenneth, F., Joniver, C. F., Meredith, W., & Adams, J. M. (2023). The productivity effects of macroalgal biochar from Ulva (Linnaeus) bloom species on Arabidopsis thaliana (Linnaeus) seedlings. European Journal of Phycology, 58(3), 284-299. https://doi.org/10.1080/09670262.2022.2103739

Intensive agricultural practices and poor management of organic waste have adverse effects on aquatic ecosystems, where excessive macroalgal proliferation can occur to form ‘green tides’, with negative environmental, ecological and socioeconomic impa... Read More about The productivity effects of macroalgal biochar from Ulva (Linnaeus) bloom species on Arabidopsis thaliana (Linnaeus) seedlings.

Synergistic effect in co-processing a residue from a transesterification process with vacuum gas oil in fluid catalytic cracking (2022)
Journal Article
Haruna, A. M., Meredith, W., & Snape, C. E. (2022). Synergistic effect in co-processing a residue from a transesterification process with vacuum gas oil in fluid catalytic cracking. Fuel, 327, Article 124973. https://doi.org/10.1016/j.fuel.2022.124973

The catalytic co-processing of bottom fuel oil (BFO) with refinery vacuum gas oil (VGO) using a commercial fluid catalytic cracking (FCC) zeolite equilibrium catalyst was carried out to ascertain its potential as a source for biofuels. The BFO used w... Read More about Synergistic effect in co-processing a residue from a transesterification process with vacuum gas oil in fluid catalytic cracking.

Molecular and isotopic evidence for the origin of light oils and associated gases in the onshore northeast Nile Delta (2022)
Journal Article
Khairy, A., El Diasty, W. S., Peters, K. E., & Meredith, W. (2022). Molecular and isotopic evidence for the origin of light oils and associated gases in the onshore northeast Nile Delta. Marine and Petroleum Geology, 140, Article 105658. https://doi.org/10.1016/j.marpetgeo.2022.105658

The Nile Delta is a prolific hydrocarbon province in Egypt and the eastern Mediterranean region, particularly for gas resources. However, the origin of discovered hydrocarbons from the onshore Nile Delta has not been comprehensively studied. Fourteen... Read More about Molecular and isotopic evidence for the origin of light oils and associated gases in the onshore northeast Nile Delta.

Opening the black box: Soil microcosm experiments reveal soot black carbon short-term oxidation and influence on soil organic carbon mineralisation (2021)
Journal Article
Crispo, M., Cameron, D. D., Meredith, W., Eveleigh, A., Ladommatos, N., Mašek, O., & Edmondson, J. L. (2021). Opening the black box: Soil microcosm experiments reveal soot black carbon short-term oxidation and influence on soil organic carbon mineralisation. Science of the Total Environment, 801, Article 149659. https://doi.org/10.1016/j.scitotenv.2021.149659

Soils hold three quarters of the total organic carbon (OC) stock in terrestrial ecosystems and yet we fundamentally lack detailed mechanistic understanding of the turnover of major soil OC pools. Black carbon (BC), the product of the incomplete combu... Read More about Opening the black box: Soil microcosm experiments reveal soot black carbon short-term oxidation and influence on soil organic carbon mineralisation.

Heavy metals and metalloids concentrations across UK urban horticultural soils and the factors influencing their bioavailability to food crops (2021)
Journal Article
Crispo, M., Dobson, M. C., Blevins, R. S., Meredith, W., Lake, J. A., & Edmondson, J. L. (2021). Heavy metals and metalloids concentrations across UK urban horticultural soils and the factors influencing their bioavailability to food crops. Environmental Pollution, 288, Article 117960. https://doi.org/10.1016/j.envpol.2021.117960

Urban horticulture (UH) has been proposed as a solution to increase urban sustainability, but the potential risks to human health due to potentially elevated soil heavy metals and metalloids (HM) concentrations represent a major constraint for UH exp... Read More about Heavy metals and metalloids concentrations across UK urban horticultural soils and the factors influencing their bioavailability to food crops.

Green and simple approach for low-cost bioproducts preparation and CO2 capture (2021)
Journal Article
Durán-Jiménez, G., Kostas, E. T., Stevens, L. A., Meredith, W., Erans, M., Hernández-Montoya, V., …Binner, E. (2021). Green and simple approach for low-cost bioproducts preparation and CO2 capture. Chemosphere, 279, Article 130512. https://doi.org/10.1016/j.chemosphere.2021.130512

This study has demonstrated, for the first time, a simple, fast and flexible microwave processing method for the simultaneous preparation of bio-products (bio-oil, bio-gas and biochar) using a methodology that avoids any form of catalyst or chemical... Read More about Green and simple approach for low-cost bioproducts preparation and CO2 capture.

Comparison of the impact of moisture on methane adsorption and nanoporosity for over mature shales and their kerogens (2021)
Journal Article
Li, W., Stevens, L. A., Uguna, C. N., Vane, C. H., Meredith, W., Tang, L., …Snape, C. E. (2021). Comparison of the impact of moisture on methane adsorption and nanoporosity for over mature shales and their kerogens. International Journal of Coal Geology, 237, Article 103705. https://doi.org/10.1016/j.coal.2021.103705

© 2021 Elsevier B.V. Moisture in shales under reservoir conditions adversely affects gas adsorption and nanoporosity and is also likely to impact on the contribution that kerogen makes to the methane adsorption capacity. To investigate these phenomen... Read More about Comparison of the impact of moisture on methane adsorption and nanoporosity for over mature shales and their kerogens.

It's the product not the polymer: Rethinking plastic pollution (2020)
Journal Article
Stanton, T., Kay, P., Johnson, M., Chan, F. K. S., Gomes, R. L., Hughes, J., …Xu, Y. (2021). It's the product not the polymer: Rethinking plastic pollution. Wiley Interdisciplinary Reviews: Water, 8(1), Article e1490. https://doi.org/10.1002/wat2.1490

Mismanaged plastic waste poses a complex threat to the environments that it contaminates, generating considerable concern from academia, industry, politicians, and the general public. This concern has driven global action that presents a unique oppor... Read More about It's the product not the polymer: Rethinking plastic pollution.

Progress in the CO2 Capture Technologies for Fluid Catalytic Cracking (FCC) Units—A Review (2020)
Journal Article
Güleç, F., Meredith, W., & Snape, C. E. (2020). Progress in the CO2 Capture Technologies for Fluid Catalytic Cracking (FCC) Units—A Review. Frontiers in Energy Research, 8, https://doi.org/10.3389/fenrg.2020.00062

© Copyright © 2020 Güleç, Meredith and Snape. Heavy industries including cement, iron and steel, oil refining, and petrochemicals are collectively responsible for about 22% of global CO2 emissions. Among these industries, oil refineries account for 4... Read More about Progress in the CO2 Capture Technologies for Fluid Catalytic Cracking (FCC) Units—A Review.

Demonstrating the applicability of chemical looping combustion for the regeneration of fluid catalytic cracking catalysts (2020)
Journal Article
Güleç, F., Meredith, W., Sun, C. G., & Snape, C. E. (2020). Demonstrating the applicability of chemical looping combustion for the regeneration of fluid catalytic cracking catalysts. Chemical Engineering Journal, 389, Article 124492. https://doi.org/10.1016/j.cej.2020.124492

© 2020 Elsevier B.V. Fluid Catalytic Cracking (FCC) units are responsible for roughly 25% of CO2 emissions from oil refineries, which themselves account for 4–6% of total global CO2 emissions. Although post- and oxy-combustion technologies have been... Read More about Demonstrating the applicability of chemical looping combustion for the regeneration of fluid catalytic cracking catalysts.

Microwave pyrolysis of olive pomace for bio-oil and bio-char production (2019)
Journal Article
Williams, O. S., Kostas, E. T., Durán-Jiménez, G., Shepherd, B. J., Meredith, W., Stevens, L. A., …Lye, G. J. (2020). Microwave pyrolysis of olive pomace for bio-oil and bio-char production. Chemical Engineering Journal, 387, Article 123404. https://doi.org/10.1016/j.cej.2019.123404

Olive pomace is a widely available agro-industrial waste residue in Europe that has the potential to contribute towards a circular, low carbon bio-economy. This study demonstrated, for the first time, the ability to successfully pyrolyse olive pomace... Read More about Microwave pyrolysis of olive pomace for bio-oil and bio-char production.

Shale gas reserve evaluation by laboratory pyrolysis and gas holding capacity consistent with field data (2019)
Journal Article
Whitelaw, P., Uguna, C. N., Stevens, L. A., Meredith, W., Snape, C. E., Vane, C. H., …Carr, A. D. (2019). Shale gas reserve evaluation by laboratory pyrolysis and gas holding capacity consistent with field data. Nature Communications, 10(1), Article 3659. https://doi.org/10.1038/s41467-019-11653-4

Exploration for shale gas occurs in onshore basins, with two approaches used to predict the maximum gas in place (GIP) in the absence of production data. The first estimates adsorbed plus free gas held within pore space, and the second measures gas y... Read More about Shale gas reserve evaluation by laboratory pyrolysis and gas holding capacity consistent with field data.

Selective low temperature chemical looping combustion of higher alkanes with Cu- and Mn- oxides (2019)
Journal Article
Güleç, F., Meredith, W., Sun, C., & Snape, C. E. (2019). Selective low temperature chemical looping combustion of higher alkanes with Cu- and Mn- oxides. Energy, 173, 658-666. https://doi.org/10.1016/j.energy.2019.02.099

Chemical looping combustion (CLC) of n-hexadecane and n-heptane with copper and manganese oxides (CuO and Mn2O3) has been investigated in a fixed bed reactor to reveal the extent to which low temperature CLC can potentially be applicable to hydrocarb... Read More about Selective low temperature chemical looping combustion of higher alkanes with Cu- and Mn- oxides.

A novel approach to CO2 capture in Fluid Catalytic Cracking-Chemical Looping Combustion (2019)
Journal Article
Güleç, F., Meredith, W., Sun, C.-G., & Snape, C. E. (2019). A novel approach to CO2 capture in Fluid Catalytic Cracking-Chemical Looping Combustion. Fuel, 244, 140-150. https://doi.org/10.1016/j.fuel.2019.01.168

Oil refineries collectively account for about 4–6% of global CO2 emissions and Fluid Catalytic Cracking (FCC) units are responsible for roughly 25% of these. Although post-combustion and oxy-combustion have been suggested to capture CO2 released from... Read More about A novel approach to CO2 capture in Fluid Catalytic Cracking-Chemical Looping Combustion.

Formation of bitumen in the Elgin/Franklin complex, Central Graben, North Sea: Implications for hydrocarbon charging (2019)
Journal Article
Meredith, W., Uguna, C. N., Snape, C. E., Carr, A. D., & Scotchman, I. C. (2019). Formation of bitumen in the Elgin/Franklin complex, Central Graben, North Sea: Implications for hydrocarbon charging. Geological Society Special Publications, 484, SP484-2017-344. https://doi.org/10.1144/sp484-2017-344

The Elgin/Franklin complex contains gas condensates in Upper Jurassic reservoirs in the North Sea Central Graben. Upper parts of the reservoirs contain bitumens, which previous studies have suggested were formed by the thermal cracking of oil as the... Read More about Formation of bitumen in the Elgin/Franklin complex, Central Graben, North Sea: Implications for hydrocarbon charging.

Evaluating the effect of biochar addition on the anaerobic digestion of swine manure: application of Py-GC/MS (2018)
Journal Article
Gómez, X., Meredith, W., Fernández, C., Sánchez-García, M., Díez-Antolínez, R., Garzón-Santos, J., & Snape, C. E. (in press). Evaluating the effect of biochar addition on the anaerobic digestion of swine manure: application of Py-GC/MS. Environmental Science and Pollution Research, https://doi.org/10.1007/s11356-018-2644-4

The anaerobic digestion process of swine manure was studied when char was used as supplement for improving performance. The use of pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) was proposed for assessing the organic matter degradation. Th... Read More about Evaluating the effect of biochar addition on the anaerobic digestion of swine manure: application of Py-GC/MS.

Dynamics of charcoal alteration in a tropical biome: a biochar-based study (2018)
Journal Article
Ascough, P., Bird, M., Meredith, W., Snape, C. E., Large, D., Tilston, E., Apperley, D., Bernabé, A., & Shen, L. (2018). Dynamics of charcoal alteration in a tropical biome: a biochar-based study. Frontiers in Earth Science, 6, Article 61. https://doi.org/10.3389/feart.2018.00061

Pyrogenic carbon (PyC) is a polyaromatic residue of the incomplete combustion of biomass or fossil fuels. There is a growing recognition that PyC forms an important part of carbon budgets, due to production rates of 116–385 Tg C yr, and the size and... Read More about Dynamics of charcoal alteration in a tropical biome: a biochar-based study.

The impact of hydrothermal carbonisation on the char reactivity of biomass (2018)
Journal Article
Stirling, R. J., Snape, C. E., & Meredith, W. (2018). The impact of hydrothermal carbonisation on the char reactivity of biomass. Fuel Processing Technology, 177, https://doi.org/10.1016/j.fuproc.2018.04.023

Hydrothermal carbonisation (HTC) is an attractive biomass pre-treatment as it produces a coal-like fuel, can easily process wet biomass and wastes, and lowers the risk of slagging and fouling in pulverised fuel (PF) combustion boilers. One of the maj... Read More about The impact of hydrothermal carbonisation on the char reactivity of biomass.

Cryogenian evolution of stigmasteroid biosynthesis (2017)
Journal Article
Hoshino, Y., Poshibaeva, A., Meredith, W., Snape, C., Poshibaev, V., Versteegh, G. J., …Hallmann, C. (2017). Cryogenian evolution of stigmasteroid biosynthesis. Science Advances, 3(9), Article e1700887. https://doi.org/10.1126/sciadv.1700887

Sedimentary hydrocarbon remnants of eukaryotic C26–C30 sterols can be used to reconstruct early algal evolution. Enhanced C29 sterol abundances provide algal cell membranes a density advantage in large temperature fluctuations. Here, we combined a li... Read More about Cryogenian evolution of stigmasteroid biosynthesis.

Analysis of biochars by hydropyrolysis (2017)
Book Chapter
Meredith, W., McBeath, A., Ascough, P., & Bird, M. (2017). Analysis of biochars by hydropyrolysis. In B. Singh, M. Camps-Arbestain, & J. Lehmann (Eds.), Biochar: a guide to analytical methods. CSIRO Publishing

Analysis of biochars for C,H,N,O and S by elemental analyser (2017)
Book Chapter
Bird, M., Keitel, C., & Meredith, W. (2017). Analysis of biochars for C,H,N,O and S by elemental analyser. In B. Singh, M. Camps-Arbestain, & J. Lehmann (Eds.), Biochar: a guide to analytical methods. CSIRO Publishing

Molecular characterization of the thermally labile fraction of biochar by hydropyrolysis and pyrolysis-GC/MS (2016)
Journal Article
Rombolà, A. G., Fabbri, D., Meredith, W., Snape, C. E., & Dieguez-Alonso, A. (2016). Molecular characterization of the thermally labile fraction of biochar by hydropyrolysis and pyrolysis-GC/MS. Journal of Analytical and Applied Pyrolysis, 121, 230-239. https://doi.org/10.1016/j.jaap.2016.08.003

Agroenvironmental benefits and limitations of biochar in soil applications require a full understanding of the stability and fate of the various carbon fractions. Analytical hydropyrolysis (HyPy) enables the determination of the stable black carbon (... Read More about Molecular characterization of the thermally labile fraction of biochar by hydropyrolysis and pyrolysis-GC/MS.

Retardation of oil cracking to gas and pressure induced combination reactions to account for viscous oil in deep petroleum basins: Evidence from oil and n-hexadecane pyrolysis at water pressures up to 900bar (2016)
Journal Article
Uguna, C. N., Carr, A. D., Snape, C. E., & Meredith, W. (2016). Retardation of oil cracking to gas and pressure induced combination reactions to account for viscous oil in deep petroleum basins: Evidence from oil and n-hexadecane pyrolysis at water pressures up to 900bar. Organic Geochemistry, 97, 61-73. https://doi.org/10.1016/j.orggeochem.2016.04.007

This study reports a laboratory pyrolysis experimental study on oil and n-hexadecane to rationalise the thermal stability of oil in deep petroleum reservoirs. Using a 25 ml Hastelloy pressure vessel, a 35° API North Sea oil (Oseberg) and n-hexadecane... Read More about Retardation of oil cracking to gas and pressure induced combination reactions to account for viscous oil in deep petroleum basins: Evidence from oil and n-hexadecane pyrolysis at water pressures up to 900bar.

Thermal Cracking of Oil under Water Pressure up to 900 bar at High Thermal Maturities. 1. Gas Compositions and Carbon Isotopes (2016)
Journal Article
Xie, L., Sun, Y., Uguna, C. N., Li, Y., Snape, C. E., & Meredith, W. (2016). Thermal Cracking of Oil under Water Pressure up to 900 bar at High Thermal Maturities. 1. Gas Compositions and Carbon Isotopes. Energy and Fuels, 30(4), 2617-2627. https://doi.org/10.1021/acs.energyfuels.5b02792

In this study, a C9+ fraction of saturate-rich Tertiary source rock-derived oil from the South China Sea basin was pyrolyzed in normal and supercritical water using a 25 mL vessel at a range of temperature from 350 to 425 °C for 24 h, to probe pressu... Read More about Thermal Cracking of Oil under Water Pressure up to 900 bar at High Thermal Maturities. 1. Gas Compositions and Carbon Isotopes.

Pyrolysis oil upgrading in high conversions using sub- and supercritical water above 400 °C (2016)
Journal Article
Isa, K. M., Snape, C. E., Uguna, C., Meredith, W., & Deng, H. (2016). Pyrolysis oil upgrading in high conversions using sub- and supercritical water above 400 °C. Journal of Analytical and Applied Pyrolysis, 119, 180-188. https://doi.org/10.1016/j.jaap.2016.03.004

The upgrading of pyrolysis oil to bio-fuel was investigated using sub- and supercritical water at 410 and 450oC, with a high mass ratio of water to pyrolysis oil to ascertain the maximum yields that could be achieved. The results indicate that conver... Read More about Pyrolysis oil upgrading in high conversions using sub- and supercritical water above 400 °C.

Impact of high water pressure on oil generation and maturation in Kimmeridge Clay and Monterey source rocks: implications for petroleum retention and gas generation in shale gas systems (2016)
Journal Article
Uguna, C. N., Carr, A. D., Snape, C. E., Meredith, W., Scotchman, I. C., Murray, A., & Vane, C. H. (2016). Impact of high water pressure on oil generation and maturation in Kimmeridge Clay and Monterey source rocks: implications for petroleum retention and gas generation in shale gas systems. Marine and Petroleum Geology, 73, https://doi.org/10.1016/j.marpetgeo.2016.02.028

This study presents results for pyrolysis experiments conducted on immature Type II and IIs source rocks (Kimmeridge Clay, Dorset UK, and Monterey shale, California, USA respectively) to investigate the impact of high water pressure on source rock ma... Read More about Impact of high water pressure on oil generation and maturation in Kimmeridge Clay and Monterey source rocks: implications for petroleum retention and gas generation in shale gas systems.

The priming potential of environmentally weathered pyrogenic carbon during land-use transition to biomass crop production (2015)
Journal Article
McClean, G. J., Meredith, W., Cross, A., Heal, K. V., Bending, G. D., & Sohi, S. P. (2016). The priming potential of environmentally weathered pyrogenic carbon during land-use transition to biomass crop production. GCB Bioenergy, 8(4), https://doi.org/10.1111/gcbb.12293

Since land-use change (LUC) to lignocellulosic biomass crops often causes a loss of soil organic carbon (SOC), at least in the short term, this study investigated the potential for pyrogenic carbon (PyC) to ameliorate this effect. Although negative p... Read More about The priming potential of environmentally weathered pyrogenic carbon during land-use transition to biomass crop production.

Determining the lower limit of Liangzhu culture based on black carbon purification with hydropyrolysis technique (2015)
Journal Article
Zhang, X., Huang, D., Han Deng, H., Snape, C., Meredith, W., Zhao, Y., …Sun, Y. (2015). Determining the lower limit of Liangzhu culture based on black carbon purification with hydropyrolysis technique. Quaternary Geochronology, 30(A), https://doi.org/10.1016/j.quageo.2015.07.001

Located in the middle and lower reaches of the Yangtze River, the Liangzhu Culture was one of the most important Neolithic cultures at the dawn of Chinese civilization. However, uncertainty over the lower age limit ending the Liangzhu Culture has res... Read More about Determining the lower limit of Liangzhu culture based on black carbon purification with hydropyrolysis technique.

Multiple Cosmic Sources for Meteorite Macromolecules? (2015)
Journal Article
Sephton, M. A., Watson, J. S., Meredith, W., Love, G. D., Gilmour, I., & Snape, C. E. (2015). Multiple Cosmic Sources for Meteorite Macromolecules?. Astrobiology, 15(10), 779-786. https://doi.org/10.1089/ast.2015.1331

The major organic component in carbonaceous meteorites is an organic macromolecular material. The Murchison macromolecular material comprises aromatic units connected by aliphatic and heteroatom-containing linkages or occluded within the wider struct... Read More about Multiple Cosmic Sources for Meteorite Macromolecules?.

Fate of soil organic carbon and polycyclic aromatic hydrocarbons in a vineyard soil treated with biochar (2015)
Journal Article
Rombolà, A. G., Meredith, W., Baronti, S., Snape, C. E., Genesio, L., Vaccari, F. P., …Fabbri, D. (2015). Fate of soil organic carbon and polycyclic aromatic hydrocarbons in a vineyard soil treated with biochar. Environmental Science and Technology, 49(18), https://doi.org/10.1021/acs.est.5b02562

The effect of biochar addition on the levels of black carbon (BC) and polcyclic aromatic hydrocarbons (PAHs) in a vineyard soil in central Italy was investigated within a two year period. Hydropyrolysis (HyPy) was used to determine the contents of BC... Read More about Fate of soil organic carbon and polycyclic aromatic hydrocarbons in a vineyard soil treated with biochar.

Geochemistry and petrology of palaeocene coals from Spitzbergen — Part 2: Maturity variations and implications for local and regional burial models (2015)
Journal Article
Marshall, C., Uguna, J., Large, D. J., Meredith, W., Jochmann, M., Friis, B., …Orheim, A. (2015). Geochemistry and petrology of palaeocene coals from Spitzbergen — Part 2: Maturity variations and implications for local and regional burial models. International Journal of Coal Geology, 143, 1-10. https://doi.org/10.1016/j.coal.2015.03.013

The Central Tertiary Basin is an uplifted part of the North Barents Shelf and should be an ideal location to understand the thermal history, maximum burial depth and overburden thickness in this petroleum-rich area. Efforts to quantify the thermal hi... Read More about Geochemistry and petrology of palaeocene coals from Spitzbergen — Part 2: Maturity variations and implications for local and regional burial models.

Geochemistry and petrology of Palaeocene coals from Spitsbergen — Part 1: oil potential and depositional environment (2015)
Journal Article
Marshall, C., Large, D. J., Meredith, W., Snape, C. E., Uguna, C. N., Spiro, B. F., …Friis, B. (2015). Geochemistry and petrology of Palaeocene coals from Spitsbergen — Part 1: oil potential and depositional environment. International Journal of Coal Geology, 143, https://doi.org/10.1016/j.coal.2015.03.006

Abundant oil prone coal (Type III kerogen) deposits are preserved within the high latitude, middle Palaeocene, Todalen member of the Central Tertiary Basin, Spitsbergen Island, Norwegian Arctic. The coals (Svea, Longyear, Svarteper and Askeladden sea... Read More about Geochemistry and petrology of Palaeocene coals from Spitsbergen — Part 1: oil potential and depositional environment.

High pressure water pyrolysis of coal to evaluate the role of pressure on hydrocarbon generation and source rock maturation at high maturities under geological conditions (2014)
Journal Article
Uguna, C. N., Carr, A. D., Snape, C. E., & Meredith, W. (2015). High pressure water pyrolysis of coal to evaluate the role of pressure on hydrocarbon generation and source rock maturation at high maturities under geological conditions. Organic Geochemistry, 78, 44-51. https://doi.org/10.1016/j.orggeochem.2014.10.013

© 2014 Elsevier Ltd. This study investigates the effect of water pressure on hydrocarbon generation and source rock maturation at high maturities for a perhydrous Tertiary Arctic coal, Svalbard. Using a 25. ml Hastalloy vessel, the coal was pyrolysed... Read More about High pressure water pyrolysis of coal to evaluate the role of pressure on hydrocarbon generation and source rock maturation at high maturities under geological conditions.

Spectroscopic Studies of Internal Injector Deposits (IDID) Resulting from the Use of Non-Commercial Low Molecular Weight Polyisobutylenesuccinimide (PIBSI) (2014)
Journal Article
Barker, J., Reid, J., Snape, C., Scurr, D., & Meredith, W. (2014). Spectroscopic Studies of Internal Injector Deposits (IDID) Resulting from the Use of Non-Commercial Low Molecular Weight Polyisobutylenesuccinimide (PIBSI). SAE International Journal of Fuels and Lubricants, 7(3), 762-770. https://doi.org/10.4271/2014-01-2720

Copyright © 2014 SAE International. Since 2009, there has been a rise in deposits of various types found in diesel fuel injection systems. They have been identified in the filter, the injector tip and recently inside the injector. The latter internal... Read More about Spectroscopic Studies of Internal Injector Deposits (IDID) Resulting from the Use of Non-Commercial Low Molecular Weight Polyisobutylenesuccinimide (PIBSI).

Quantifying 12/13 CH4 migration and fate following sub-surface release to an agricultural soil (2013)
Journal Article