Research Repository

See what's under the surface


Production of high purity silica by microfluidic-inclusion fracture using microwave pre-treatment (2018)
Journal Article
Buttress, A., Rodriguez, J., Ure, A., Ferrari, R., Dodds, C., & Kingman, S. (2019). Production of high purity silica by microfluidic-inclusion fracture using microwave pre-treatment. Minerals Engineering, 131, 407-419. doi:10.1016/j.mineng.2018.11.025

Demand for high purity silica used in component manufacture is set to outstrip current supply in the near future. As such, alternative processing routes to feed-stock materials suitable for use in lighting and solar cell fabrication are required, wit... Read More

Microwave assisted hydro-distillation of essential oils from fresh ginger root (Zingiber officinale Roscoe) (2017)
Journal Article
Racoti, A., Buttress, A., Binner, E., Dodds, C., Trifan, A., & Calinescu, I. (2017). Microwave assisted hydro-distillation of essential oils from fresh ginger root (Zingiber officinale Roscoe). Journal of Essential Oil Research, doi:10.1080/10412905.2017.1360216. ISSN 1041-2905

A solvent free in situ microwave hydro-distillation method for extraction of essential oil from fresh ginger root it presented. Extraction was conducted in a TE10n single-mode microwave cavity and variable power 2 kW generator operating at 2.45GHz. T... Read More

Towards large scale microwave treatment of ores: Part 2 - Metallurgical testing (2017)
Journal Article
Batchelor, A., Buttress, A., Jones, D., Katrib, J., Way, D., Chenje, T., …Kingman, S. (2017). Towards large scale microwave treatment of ores: Part 2 - Metallurgical testing. Minerals Engineering, 111, doi:10.1016/j.mineng.2017.05.003. ISSN 0892-6875

A pilot scale microwave treatment system capable of treating 10-150t/h of material at 10-200kW was designed, constructed and commissioned in order to understand the engineering challenges of microwave-induced fracture of ores at scale and generate la... Read More

Towards large scale microwave treatment of ores: Part 1 – Basis of design, construction and commissioning (2017)
Journal Article
Buttress, A., Katrib, J., Batchelor, A., Jones, D., Craig, D., Royal, T., …Kingman, S. (2017). Towards large scale microwave treatment of ores: Part 1 – Basis of design, construction and commissioning. Minerals Engineering, 109, doi:10.1016/j.mineng.2017.03.006. ISSN 0892-6875

Despite over thirty years of work, microwave pre-treatment processes for beneficiation of ores have not progressed much further than laboratory testing. In this paper we present a scaleable pilot-scale system for the microwave treatment of ores capab... Read More

Development and evaluation of a continuous microwave processing system for hydrocarbon removal from solids (2015)
Journal Article
Buttress, A., Binner, E., Yi, C., Palade, P., Robinson, J., & Kingman, S. (2016). Development and evaluation of a continuous microwave processing system for hydrocarbon removal from solids. Chemical Engineering Journal, 283, doi:10.1016/j.cej.2015.07.030. ISSN 1385-8947

A continuous conveyor-belt processing concept using microwave heating was developed and evaluated. Four hydrocarbon-contaminated soils were used as model feedstocks, and the degree of organic removal was assessed against the power and energy input t... Read More

Understanding the scabbling of concrete using microwave energy (2015)
Journal Article
Buttress, A., Jones, D., Dodds, C., Dimitrakis, G., Dawson, A., & Kingman, S. (in press). Understanding the scabbling of concrete using microwave energy. Cement and Concrete Research, 75, doi:10.1016/j.cemconres.2015.04.009. ISSN 0008-8846

This paper reports on the use of microwave energy to scabble concrete. While the technique is not new, little information exists relating to the controllability of the process, the effect of different types of concrete and the performance and durabil... Read More

The role of ettringite in the deterioration of artificial lime stabilised soils: a microstructural study (2013)
Journal Article
Buttress, A., Grenfell, J., & Airey, G. (2013). The role of ettringite in the deterioration of artificial lime stabilised soils: a microstructural study. Road Materials and Pavement Design, 14(3), doi:10.1080/14680629.2013.779306. ISSN 1468-0629

The formation of ettringite has been defined as a major failure mechanism of lime stabilised cohesive soils. It can result in both disruptive volumetric changes and loss of mechanical strength. The mechanisms of its formation and the role it plays in... Read More

Accelerated swell testing of artificial sulfate bearing lime stabilised cohesive soils
Journal Article
Buttress, A., Grenfell, J., & Airey, G. (2014). Accelerated swell testing of artificial sulfate bearing lime stabilised cohesive soils. Materials and Structures, doi:10.1617/s11527-014-0428-y. ISSN 1359-5997

This paper reports on the physico-chemical response of two lime stabilised sulfate bearing artificial soils subject to the European Accelerated Volumetric Swell Test (EN13286-49). At various intervals during the test, a specimen was removed and subje... Read More