All Outputs (85)

Hydrogenotrophic Methanogenesis Under Alkaline Conditions (2020)
Journal Article
Wormald, R. M., Rout, S. P., Mayes, W., Gomes, H., & Humphreys, P. N. (2020). Hydrogenotrophic Methanogenesis Under Alkaline Conditions. Frontiers in Microbiology, 11, Article 614227. https://doi.org/10.3389/fmicb.2020.614227

A cement-based geological disposal facility (GDF) is one potential option for the disposal of intermediate level radioactive wastes. The presence of both organic and metallic materials within a GDF provides the opportunity for both acetoclastic and h... Read More about Hydrogenotrophic Methanogenesis Under Alkaline Conditions.

New insights into biomass combustion ash categorisation: A phylogenetic analysis (2020)
Journal Article
Zhai, J., Burke, I., Mayes, W. M., & Stewart, D. (in press). New insights into biomass combustion ash categorisation: A phylogenetic analysis. Fuel, Article 119469. https://doi.org/10.1016/j.fuel.2020.119469

Combustion of biomass within power stations is a more sustainable way to generate electricity than the use of fossil fuels provided the feedstock is sustainably grown. The physical and chemical properties of biomass combustion ash from different feed... Read More about New insights into biomass combustion ash categorisation: A phylogenetic analysis.

Legacy iron and steel wastes in the UK: Extent, resource potential, and management futures (2020)
Journal Article
Riley, A. L., MacDonald, J. M., Burke, I. T., Renforth, P., Jarvis, A. P., Hudson-Edwards, K. A., McKie, J., & Mayes, W. M. (2020). Legacy iron and steel wastes in the UK: Extent, resource potential, and management futures. Journal of Geochemical Exploration, 219, Article 106630. https://doi.org/10.1016/j.gexplo.2020.106630

The iron and steel industry has a long tradition of bulk reuse of slags for a range of construction applications. Growing interest in recent years has seen slag resource recovery options extend to critical raw material recovery and atmospheric carbon... Read More about Legacy iron and steel wastes in the UK: Extent, resource potential, and management futures.

Effect of an extreme flood event on solute transport and resilience of a mine water treatment system in a mineralised catchment (2020)
Journal Article
Mayes, W. M., Perks, M. T., Large, A. R., Davis, J. E., Gandy, C. J., Orme, P. A., & Jarvis, A. P. (2021). Effect of an extreme flood event on solute transport and resilience of a mine water treatment system in a mineralised catchment. The Science of the total environment, 750, Article 141693. https://doi.org/10.1016/j.scitotenv.2020.141693

Extreme rainfall events are predicted to become more frequent with climate change and can have a major bearing on instream solute and pollutant transport in mineralised catchments. The Coledale Beck catchment in north-west England was subject to an e... Read More about Effect of an extreme flood event on solute transport and resilience of a mine water treatment system in a mineralised catchment.

Resource Recovery from Wastes: Towards a Circular Economy (2019)
Book
Macaskie, L. E., Sapsford, D. J., & Mayes, W. M. (Eds.). (2020). Resource Recovery from Wastes: Towards a Circular Economy. London: Royal Society of Chemistry. https://doi.org/10.1039/9781788016353

The concept of a circular economy has been gaining increasing attention in recent years. Many of the sources of chemicals we have become reliant on are dwindling and the accumulation of waste products poses a serious environmental problem. By recover... Read More about Resource Recovery from Wastes: Towards a Circular Economy.

Governing Resource Flows in a Circular Economy: Rerouting Materials in an Established Policy Landscape (2019)
Book Chapter
Deutz, P., Baxter, H., & Gibbs, D. (2019). Governing Resource Flows in a Circular Economy: Rerouting Materials in an Established Policy Landscape. In L. E. Macaskie, D. J. Sapsford, & W. M. Mayes (Eds.), Resource Recovery from Wastes: Towards a Circular Economy (375-394). Royal Society of Chemistry. https://doi.org/10.1039/9781788016353-00375

The development of a Circular Economy, whereby resources are kept in circulation for the extraction of maximum value, has captured extensive policy and academic attention. The circularisation of material flows is likely to prove a task for a generati... Read More about Governing Resource Flows in a Circular Economy: Rerouting Materials in an Established Policy Landscape.

Integrating Remediation and Resource Recovery of Industrial Alkaline Wastes: Case Studies of Steel and Alumina Industry Residues (2019)
Book Chapter
Gomes, H. I., Rogerson, M., Courtney, R., & Mayes, W. M. (2020). Integrating Remediation and Resource Recovery of Industrial Alkaline Wastes: Case Studies of Steel and Alumina Industry Residues. In Resource recovery from wastes: towards a circular economy (168-191). Royal Society of Chemistry. https://doi.org/10.1039/9781788016353-00168

With an estimated annual production of two billion tonnes globally, alkaline industrial wastes can be considered both major global waste streams, and materials that offer significant options for potential resource recovery. Alkaline wastes are usuall... Read More about Integrating Remediation and Resource Recovery of Industrial Alkaline Wastes: Case Studies of Steel and Alumina Industry Residues.

A New Perspective on a Global Circular Economy (2019)
Book Chapter
Velenturf, A. P. M., Purnell, P., Macaskie, L. E., Mayes, W. M., & Sapsford, D. J. (2020). A New Perspective on a Global Circular Economy. In Resource recovery from wastes : towards a circular economy (3-22). Royal Society of Chemistry. https://doi.org/10.1039/9781788016353-00001

© The Royal Society of Chemistry 2020. Natural resource exploitation is accelerating in the face of resource decline, while at the same time people are generating ever growing quantities of wastes. Population and income growth drive up the demand for... Read More about A New Perspective on a Global Circular Economy.

What Causes Carbonates to Form “Shrubby” Morphologies? An Anthropocene Limestone Case Study (2019)
Journal Article
Bastianini, L., Rogerson, M., Mercedes-Martín, R., Prior, T. J., Cesar, E. A., & Mayes, W. M. (2019). What Causes Carbonates to Form “Shrubby” Morphologies? An Anthropocene Limestone Case Study. Frontiers in Earth Science, 7, Article 236. https://doi.org/10.3389/feart.2019.00236

The South Atlantic Aptian “Pre-Salt” shrubby carbonate successions offshore Brazil and Angola are of major interest due to their potential hydrocarbon accumulations. Although the general sedimentology of these deposits is widely recognized to be with... Read More about What Causes Carbonates to Form “Shrubby” Morphologies? An Anthropocene Limestone Case Study.

Atmospheric carbon capture performance of legacy iron and steel waste (2019)
Journal Article
Pullin, H., Bray, A. W., Burke, I. T., Muir, D. D., Sapsford, D. J., Mayes, W. M., & Renforth, P. (2019). Atmospheric carbon capture performance of legacy iron and steel waste. Environmental Science and Technology, 53(16), 9502-9511. https://doi.org/10.1021/acs.est.9b01265

Legacy iron (Fe) and steel wastes have been identified as a significant source of silicate minerals, which can undergo carbonation reactions and thus sequester carbon dioxide (CO2). In reactor experiments, i.e., at elevated temperatures, pressures, o... Read More about Atmospheric carbon capture performance of legacy iron and steel waste.

Constructed wetlands for steel slag leachate management: Partitioning of arsenic, chromium, and vanadium in waters, sediments, and plants (2019)
Journal Article
Gomes, H., Mayes, W. M., Whitby, P., & Rogerson, M. (2019). Constructed wetlands for steel slag leachate management: Partitioning of arsenic, chromium, and vanadium in waters, sediments, and plants. Journal of environmental management, 243, 30-38. https://doi.org/10.1016/j.jenvman.2019.04.127

© 2019 The Authors Constructed wetlands can treat highly alkaline leachate resulting from the weathering of steel slag before reuse (e.g. as aggregate)or during disposal in repositories and legacy sites. This study aimed to assess how metal(loid)s s... Read More about Constructed wetlands for steel slag leachate management: Partitioning of arsenic, chromium, and vanadium in waters, sediments, and plants.

Optimization Routes for the Bioleaching of MSWI Fly and Bottom Ashes Using Microorganisms Collected from a Natural System (2019)
Journal Article
Funari, V., Gomes, H. I., Cappelletti, M., Fedi, S., Dinelli, E., Rogerson, M., Mayes, W. M., & Rovere, M. (2019). Optimization Routes for the Bioleaching of MSWI Fly and Bottom Ashes Using Microorganisms Collected from a Natural System. Waste and biomass valorization, 10(12), 3833-3842. https://doi.org/10.1007/s12649-019-00688-9

This paper presents a route for the treatment of MSWI fly (FA) and bottom ashes (BA) using microorganisms to critically assess whether bioleaching is within reach of effective industrial application. The leaching of metals from BA and FA was investig... Read More about Optimization Routes for the Bioleaching of MSWI Fly and Bottom Ashes Using Microorganisms Collected from a Natural System.

Vanadium: A re-emerging environmental hazard (2018)
Journal Article
Watt, J. A., Burke, I. T., Edwards, R. A., Malcolm, H. M., Mayes, W. M., Olszewska, J. P., Pan, G., Graham, M. C., Heal, K. V., Rose, N. L., Turner, S. D., & Spears, B. M. (2018). Vanadium: A re-emerging environmental hazard. Environmental Science and Technology, 52(21), 11973-11974. https://doi.org/10.1021/acs.est.8b05560

Vanadium (V) is a contaminant which has been long confined to the annals of regulatory history. This follows the reduction of its historical primary source (fossil fuel emissions) since the 1970s (e.g., by 80% in the UK). However, V is quickly becomi... Read More about Vanadium: A re-emerging environmental hazard.

Leaching behaviour of co-disposed steel making wastes: Effects of aeration on leachate chemistry and vanadium mobilisation (2018)
Journal Article
Hobson, A. J., Stewart, D. I., Mortimer, R. J., Mayes, W. M., Rogerson, M., & Burke, I. T. (2018). Leaching behaviour of co-disposed steel making wastes: Effects of aeration on leachate chemistry and vanadium mobilisation. Waste Management, 81, 1-10. https://doi.org/10.1016/j.wasman.2018.09.046

Steelmaking wastes stored in landfill, such as slag and spent refractory liners, are often enriched in toxic trace metals (including V). These may become mobile in highly alkaline leachate generated during weathering. Fresh steelmaking waste was char... Read More about Leaching behaviour of co-disposed steel making wastes: Effects of aeration on leachate chemistry and vanadium mobilisation.

Options for managing alkaline steel slag leachate: A life cycle assessment (2018)
Journal Article
Gomes, H. I., Mayes, W. M., Baxter, H. A., Jarvis, A. P., Burke, I. T., Stewart, D. I., & Rogerson, M. (2018). Options for managing alkaline steel slag leachate: A life cycle assessment. Journal of cleaner production, 202, 401-412. https://doi.org/10.1016/j.jclepro.2018.08.163

Management of steel slag (a major by-product of the steel industry) includes the treatment of highly alkaline leachate (pH > 11.5) from rainwater infiltration of slag deposits to prevent adverse impact upon surface or ground waters. This study aims t... Read More about Options for managing alkaline steel slag leachate: A life cycle assessment.

Behaviour and fate of vanadium during the aerobic neutralisation of hyperalkaline slag leachate (2018)
Journal Article
Hobson, A. J., Stewart, D. I., Bray, A. W., Mortimer, R. J., Mayes, W. M., Riley, A. L., Rogerson, M., & Burke, I. T. (2018). Behaviour and fate of vanadium during the aerobic neutralisation of hyperalkaline slag leachate. The Science of the total environment, 643, 1191-1199. https://doi.org/10.1016/j.scitotenv.2018.06.272

© 2018 Vanadium is a toxic metal present in alkaline leachates produced during the weathering of steel slags. Slag leaching can therefore have deleterious effects on local watercourses due to metal toxicity, the effects of the high pH (9–12.5) and ra... Read More about Behaviour and fate of vanadium during the aerobic neutralisation of hyperalkaline slag leachate.

Atmospheric CO2 sequestration in iron and steel slag: Consett, Co. Durham, UK (2018)
Journal Article
Mayes, W. M., Riley, A. L., Gomes, H., Brabham, P., Hamlyn, J., Pullin, H., & Renforth, P. (2018). Atmospheric CO2 sequestration in iron and steel slag: Consett, Co. Durham, UK. Environmental Science and Technology, 52(14), 7892-7900. https://doi.org/10.1021/acs.est.8b01883

Carbonate formation in waste from the steel industry could constitute a non-trivial proportion of global requirements to remove carbon dioxide from the atmosphere at potentially low cost. To constrain this potential, we examined atmospheric carbon di... Read More about Atmospheric CO2 sequestration in iron and steel slag: Consett, Co. Durham, UK.

Recovery of Al, Cr and V from steel slag by bioleaching: batch and column experiments (2018)
Journal Article
Gomes, H. I., Funari, V., Mayes, W. M., Rogerson, M., & Prior, T. J. (2018). Recovery of Al, Cr and V from steel slag by bioleaching: batch and column experiments. Journal of environmental management, 222, 30-36. https://doi.org/10.1016/j.jenvman.2018.05.056

Steel slag is a major by-product of the steel industry and a potential resource of technology critical elements. For this study, a basic oxygen furnace (BOF) steel slag was tested for bacterial leaching and recovery of aluminium (Al), chromium (Cr),... Read More about Recovery of Al, Cr and V from steel slag by bioleaching: batch and column experiments.

Hydration of dicalcium silicate and diffusion through neo-formed calcium-silicate-hydrates at weathered surfaces control the long-term leaching behaviour of basic oxygen furnace (BOF) steelmaking slag (2018)
Journal Article
Stewart, D. I., Bray, A. W., Udoma, G., Hobson, A. J., Mayes, W. M., Rogerson, M., & Burke, I. T. (2018). Hydration of dicalcium silicate and diffusion through neo-formed calcium-silicate-hydrates at weathered surfaces control the long-term leaching behaviour of basic oxygen furnace (BOF) steelmaking slag. Environmental science and pollution research, 25(10), 9861-9872. https://doi.org/10.1007/s11356-018-1260-7

© 2018 The Author(s) Alkalinity generation and toxic trace metal (such as vanadium) leaching from basic oxygen furnace (BOF) steel slag particles must be properly understood and managed by pre-conditioning if beneficial reuse of slag is to be maximis... Read More about Hydration of dicalcium silicate and diffusion through neo-formed calcium-silicate-hydrates at weathered surfaces control the long-term leaching behaviour of basic oxygen furnace (BOF) steelmaking slag.

Hydraulic and biotic impacts on neutralisation of high-pH waters (2017)
Journal Article
Gomes, H. I., Mayes, W. M., Rogerson, M., Burke, I. T., & Stewart, D. I. (2017). Hydraulic and biotic impacts on neutralisation of high-pH waters. The Science of the total environment, 601-602, 1271-1279. https://doi.org/10.1016/j.scitotenv.2017.05.248

The management of alkaline (pH 11–12.5) leachate is an important issue associated with the conditioning, afteruse or disposal of steel slags. Passive in-gassing of atmospheric CO2 is a low cost option for reducing Ca(OH)2 alkalinity, as Ca(OH)2 is ne... Read More about Hydraulic and biotic impacts on neutralisation of high-pH waters.