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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. doi: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

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). doi:10.1016/j.scitotenv.2017.05.248. ISSN 0048-9697

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

Resource recovery and remediation of highly alkaline residues : a political-industrial ecology approach to building a circular economy (2017)
Journal Article
Deutz, P., Baxter, H., Gibbs, D., Mayes, W. M., & Gomes, H. I. (2017). Resource recovery and remediation of highly alkaline residues : a political-industrial ecology approach to building a circular economy. Geoforum, 85, 336-344. doi:10.1016/j.geoforum.2017.03.021

Highly alkaline industrial residues (e.g., steel slag, bauxite processing residue (red mud) and ash from coal combustion) have been identified as stocks of potentially valuable metals. Technological change has created demand for metals, such as vanad... Read More

Vanadium removal and recovery from bauxite residue leachates by ion exchange (2016)
Journal Article
Jones, A., Gomes, H. I., Mayes, W. M., Rogerson, M., & Burke, I. T. (2016). Vanadium removal and recovery from bauxite residue leachates by ion exchange. Environmental science and pollution research international, 23(22), (23034-23042). doi:10.1007/s11356-016-7514-3. ISSN 0944-1344

Bauxite residue is an important by-product of the alumina industry, and current management practices do not allow their full valorisation, especially with regard to the recovery of critical metals. This work aims to test the efficiency of ion exchang... Read More

Electrokinetic delivery of persulfate to remediate PCBs polluted soils: Effect of different activation methods (2015)
Journal Article
Gomes, H. I., Cang, L., Fan, G., & Zhou, D. (2016). Electrokinetic delivery of persulfate to remediate PCBs polluted soils: Effect of different activation methods. Chemosphere, 144, 138-147. doi:10.1016/j.chemosphere.2015.08.074

Persulfate-based in-situ chemical oxidation (ISCO) for the remediation of organic polluted soils has gained much interest in last decade. However, the transportation of persulfate in low-permeability soil is very low, which limits its efficiency in d... Read More