Professor Devin Sapsford

2025

• Ma, L. et al. 2025. Distinct mechanisms of stibnite (Sb2S3) oxidative dissolution mediated by acid-generating and alkali-generating microorganisms within a wide pH range. Journal of Hazardous Materials 492, article number: 138141. (10.1016/j.jhazmat.2025.138141)
• Ren, Z., Sapsford, D. and Jin, F. 2025. Phosphorus removal from wastewater using carbonated biochar/steel slag composites. Presented at: 6th International Conference on Environmental Geotechnology, Recycled Waste Materials and Sustainable Engineering (EGRWSE-2025), Vigo, Spain, 11-14 June 2025.

2024

• Al-Obaidi, S. A., Srivastava, P., Webster, G., Weightman, A. J. and Sapsford, D. 2024. Iron oxide-bearing wastes as media for supporting biodegradation of BTEX. Minerals 14(12), article number: 1231. (10.3390/min14121231)
• Mao, J. et al. 2024. Polymetallic contamination drives indigenous microbial community assembly dominated by stochastic processes at Pb-Zn smelting sites. Science of the Total Environment 947, article number: 174575. (10.1016/j.scitotenv.2024.174575)
• Purnell, A., Sapsford, D., Evans, S. L., Kooij, C. and Wauters, P. 2024. Application of the Fuller-Thompson equation in sinter blend design to increase sinter productivity. Ironmaking & Steelmaking 51(6), pp. 556-570. (10.1177/03019233241248255)
• Alshehri, K., Basirati, M., Sapsford, D., Harbottle, M. and Cleall, P. 2024. Nature-based secondary resource recovery under climate change uncertainty: a robust multi-objective optimisation methodology. Sustainability 16(16), article number: 7720. (10.3390/su16167220)
• Wang, X., Chen, M., Ma, L., Juholin, P. and Sapsford, D. J. 2024. Degradation of residual xanthates in mineral processing wastewater-A review. Minerals Engineering 212, article number: 108717. (10.1016/j.mineng.2024.108717)
• Alshehri, K., Chen, I., Rugani, B., Sapsford, D., Harbottle, M. and Cleall, P. 2024. A novel uncertainty assessment protocol for integrated ecosystem services-life cycle assessments: A comparative case of nature-based solutions. Sustainable Production and Consumption 47, pp. 499-515. (10.1016/j.spc.2024.04.026)
• Gao, Z., Cui, T., Qian, H., Sapsford, D. J., Cleall, P. J. and Harbottle, M. J. 2024. Can wood waste be a feedstock for anaerobic digestion? A machine learning assisted meta-analysis. Chemical Engineering Journal 487, article number: 150496. (10.1016/j.cej.2024.150496)
• Harbottle, M., Smith, H., Kennedy, J., Sapsford, D., Cleall, P., Weightman, A. and Ugalde Loo, C. 2024. Microbially mediated energy storage in the pedosphere. Presented at: EGU General Assembly 2024, Vienna, Austria, 14-19 April 2024EGU General Assembly 2024 - Abstracts. Copernicus, (10.5194/egusphere-egu24-9593, 2024)

2023

• Wang, X., Chen, M., Ma, L., Liu, P., Zhou, J. and Sapsford, D. J. 2023. New strategy for sustainable treatment of residual xanthate in mineral processing wastewater by using natural pyrite. Minerals Engineering 204, article number: 108427. (10.1016/j.mineng.2023.108427)
• Alshehri, K., Gao, Z., Harbottle, M., Sapsford, D. and Cleall, P. 2023. Life cycle assessment and cost-benefit analysis of nature-based solutions for contaminated land remediation: A mini-review. Heliyon 9(10), article number: e20632. (10.1016/j.heliyon.2023.e20632)
• Kennedy, J., Okeme, I. and Sapsford, D. 2023. Novel approaches to passive and semi-passive treatment of zinc-bearing circumneutral mine waters in England and Wales. In: Fosso-Kankeu, E. and Mamba, B. B. eds. Hybridized Technologies for the Treatment of Mining Effluents. Scrivener Publishing LLC, pp. 147-175., (10.1002/9781119896920.ch6)
• Kennedy, J., Dean, J., Okeme, I. and Sapsford, D. 2023. An assessment of the efficacy of sodium carbonate for semi-passive treatment of circumneutral zinc-bearing mine waters. Journal of Water Process Engineering 53, article number: 103764. (10.1016/j.jwpe.2023.103764)
• Smith, H. B. et al. 2023. Sphingopyxis Species Isolated from Sand Filter Biofilm at an Australian Drinking Water Treatment Works. Microbiology Resource Announcements (10.1128/mra.00249-23)
• Crane, R. and Sapsford, D. J. 2023. Towards sustainable mass production of metallic nanoparticles: Selective synthesis of copper nanoparticles directly from malachite ore. Minerals Engineering 196, article number: 108048. (10.1016/j.mineng.2023.108048)
• Alshehri, K., Harbottle, M., Sapsford, D., Beames, A. and Cleall, P. 2023. Integration of ecosystem services and life cycle assessment allows improved accounting of sustainability benefits of nature-based solutions for brownfield redevelopment. Journal of Cleaner Production 413, article number: 137352. (10.1016/j.jclepro.2023.137352)
• Sapsford, D. J. et al. 2023. Circular economy landfills for temporary storage and treatment of mineral-rich wastes. Waste and Resource Management 176(2), pp. 77-93. (10.1680/jwarm.22.00008)
• Roberts, M., Srivastava, P., Webster, G., Weightman, A. J. and Sapsford, D. J. 2023. Biostimulation of jarosite and iron oxide-bearing mine waste enhances subsequent metal recovery. Journal of Hazardous Materials 445, article number: 130498. (10.1016/j.jhazmat.2022.130498)

2022

• Gao, Z., Alshehri, K., Li, Y., Qian, H., Sapsford, D., Cleall, P. and Harbottle, M. 2022. Advances in biological techniques for sustainable lignocellulosic waste utilization in biogas production. Renewable and Sustainable Energy Reviews 170, article number: 112995. (10.1016/j.rser.2022.112995)
• Roberts, M., Srivastava, P., Webster, G., Weightman, A. J. and Sapsford, D. J. 2022. Biostimulation of jarosite and iron oxide-bearing mine waste enhances subsequent metal recovery. [Online]. SSRN. (10.2139/ssrn.4229663) Available at: http://dx.doi.org/10.2139/ssrn.4229663
• Srivastava, P., Al-Obaidi, S. A., Webster, G., Weightman, A. J. and Sapsford, D. J. 2022. Towards passive bioremediation of dye-bearing effluents using hydrous ferric oxide wastes: Mechanisms, products and microbiology. Journal of Environmental Management 317, article number: 115332. (10.1016/j.jenvman.2022.115332)

2020

• Crane, R. A., Sapsford, D. J. and Aderibigbe, A. 2020. Applications of engineered nanomaterials in the recovery of metals from wastewater. In: Macaskie, L. E., Sapsford, D. J. and Mayes, W. M. eds. Resource Recovery from Wastes: Towards a Circular Economy. , pp. 266-286., (10.1039/9781788016353-00266)
• Sapsford, D. J., Crane, R. A. and Sinnett, D. 2020. An exploration of key concepts in application of in situ processes for recovery of resources from high-volume industrial and mine wastes. In: Macaskie, L. E., Sapsford, D. J. and Mayes, W. M. eds. Resource Recovery from Wastes: Towards a Circular Economy. , pp. 141-167., (10.1039/9781788016353-00141)

2019

• Crane, R. and Sapsford, D. 2019. Tunable formation of copper metal, oxide, chloride and hydroxyl chloride nanoparticles from aqueous copper solutions using nanoscale zerovalent iron particles. Nanomaterials and Nanotechnology 9, pp. 1-16. (10.1177/1847980419886173)
• Roberts, M., Weightman, A. and Sapsford, D. J. 2019. Chapter 8. Potential application of direct and indirect iron bioreduction in resource recovery from iron oxide-bearing wastes. In: Macaskie, L., Sapsford, D. and Mayes, W. eds. Resource Recovery from Wastes: Towards a Circular Economy. , pp. 192-212., (10.1039/9781788016353-00192)
• Velenturf, A. P. M., Purnell, P., Macaskie, L. E., Mayes, W. M. and Sapsford, D. J. 2019. A new perspective on a global circular economy. In: Resource Recovery from Wastes: Towards a Circular Economy. Green Chemistry Series, pp. 1-22., (10.1039/9781788016353-00001)
• Pullin, H., Bray, A. W., Burke, I. T., Muir, D. D., Sapsford, D. J., Mayes, W. M. and Renforth, P. 2019. Atmospheric carbon capture performance of legacy iron and steel waste. Environmental Science and Technology 53(16), pp. 9502-9511. (10.1021/acs.est.9b01265)
• Savage, R. J., Pearce, S., Mueller, S., Barnes, A., Renforth, P. and Sapsford, D. 2019. Methods for assessing acid and metalliferous drainage mitigation and carbon sequestration in mine waste: a case study from Kevitsa mine, Finland. Presented at: 13th International Conference on Mine Closure, Perth, Australia, 3-5 September 2019.

2018

• Crane, R. and Sapsford, D. 2018. Towards greener lixiviants in value recovery from mine wastes: efficacy of organic acids for the dissolution of copper and arsenic from legacy mine tailings. Minerals 8(9), article number: 383. (10.3390/min8090383)
• Warwick, S., Durany-Fernandez, P., Sapsford, D., Cleall, P. and Harbottle, M. 2018. Altered chemical evolution in landfill leachate post implementation of biodegradable waste diversion. Waste Management and Research 36(9), pp. 857-868. (10.1177/0734242X18785723)
• Crane, R. A. and Sapsford, D. J. 2018. Sorption and fractionation of rare earth element ions onto nanoscale zerovalent iron particles. Chemical Engineering Journal 345, pp. 126-137. (10.1016/j.cej.2018.03.148)
• Crane, R. A. and Sapsford, D. J. 2018. Towards 'Precision Mining' of wastewater: Selective recovery of Cu from acid mine drainage onto diatomite supported nanoscale zerovalent iron particles. Chemosphere 202, pp. 339-348. (10.1016/j.chemosphere.2018.03.042)
• Peppicelli, C., Cleall, P., Sapsford, D. and Harbottle, M. 2018. Changes in metal speciation and mobility during electrokinetic treatment of industrial wastes: implications for remediation and resource recovery. Science of the Total Environment 624, pp. 1488-1503. (10.1016/j.scitotenv.2017.12.132)
• Crane, R. A. and Sapsford, D. J. 2018. Selective formation of copper nanoparticles from acid mine drainage using nanoscale zerovalent iron particles. Journal of Hazardous Materials 347, pp. 252-265. (10.1016/j.jhazmat.2017.12.014)
• Blanco, I. et al. 2018. International trials of vertical flow reactors for coal mine water treatment. Mine Water and the Environment 37(1), pp. 4-17.

2017

• Sapsford, D. J. and Tufvesson, S. 2017. Properties of recycled sludge formed from different aluminiferous reagents during the ettringite process. Journal of Water Process Engineering 19, pp. 305-311. (10.1016/j.jwpe.2017.08.016)
• Roberts, M., Sapsford, D., Weightman, A. and Webster, G. 2017. Changes in metal leachability through stimulation of iron reducing communities within waste sludge. Solid State Phenomena 262, pp. 269-272. (10.4028/www.scientific.net/SSP.262.269)
• Crane, R., Sinnett, D. E., Cleall, P. J. and Sapsford, D. J. 2017. Physicochemical composition of wastes and co-located landscape designations at legacy 1 mine sites in south west England and Wales: Implications on resource potential. Resources, Conservation and Recycling 123, pp. 117-134. (10.1016/j.resconrec.2016.08.009)
• Rashid, G., Durán-Peña, M., Rahmanpour, R., Sapsford, D. J. and Bugg, T. 2017. Delignification and enhanced gas release from soil containing lignocellulose by treatment with bacterial lignin degraders. Journal of Applied Microbiology 123(1), pp. 159-171. (10.1111/jam.13470)
• Sapsford, D. J., Cleall, P. and Harbottle, M. 2017. In situ resource recovery from waste repositories: exploring the potential for mobilization and capture of metals from anthropogenic ores. Journal of Sustainable Metallurgy 3(2), pp. 375-392. (10.1007/s40831-016-0102-4)

2016

• Emanuel, D. and Sapsford, D. J. 2016. Fossil rootlet biopores as conduits for contaminant transport through clay horizons: a case study of DNAPL behaviour in Severn alluvium, UK. Environmental Earth Sciences 75(11), article number: 972. (10.1007/s12665-016-5756-5)
• Florence, K., Sapsford, D. J., Johnson, D. B., Kay, C. M. and Wolkersdorfer, C. 2016. Iron-mineral accretion from acid mine drainage and its application in passive treatment. Environmental Technology 37(11), pp. 1428-1440. (10.1080/09593330.2015.1118558)
• Raikova, S. et al. 2016. Assessing hydrothermal liquefaction for the production of bio-oil and enhanced metal recovery from microalgae cultivated on acid mine drainage. Fuel Processing Technology 142, pp. 219-227. (10.1016/j.fuproc.2015.10.017)
• Sutton, A. and Sapsford, D. J. 2016. Physicochemical characterization of sludge originating from vegetable oil–based cutting fluids. Journal of Environmental Engineering 142(1), article number: 4015057. (10.1061/(ASCE)EE.1943-7870.0001014)
• Peppicelli, C., Cleall, P. J., Sapsford, D. J. and Harbottle, M. J. 2016. Electrokinetic treatment in the recovery of valuable metals from waste repositories: Metal speciation and transient behaviour of metals during EK. Presented at: 3rd International Symposium on Enhanced Landfill Mining, Lisbon, Portugal, February 2016.
• Sapsford, D. J., Cleall, P. J. and Harbottle, M. J. 2016. In situ resource recovery from waste repositories: exploring the potential for mobilisation and capture of metals from anthropogenic ores. Presented at: 3rd International Symposium on Enhanced Landfill Mining, Lisbon, Portugal, February 2016.
• Roberts, M., Sapsford, D. J., Cleall, P. J., Harbottle, M. J. and Weightman, A. J. 2016. In situ microbial dissolution of iron mineral-bearing wastes for metal recovery. Presented at: 3rd International Symposium on Enhanced Landfill Mining, Lisbon, Portugal, February 2016.

2015

• Sapsford, D. J., Santonastaso, M., Thorn, P. and Kershaw, S. 2015. Conversion of coal mine drainage ochre to water treatment reagent: Production, characterisation and application for P and Zn removal. Journal of Environmental Management 160, pp. 7-15. (10.1016/j.jenvman.2015.06.004)

2013

• Sapsford, D. J. 2013. New perspectives on the passive treatment of ferruginous circumneutral mine waters in the UK. Environmental Science and Pollution Research 20(11), pp. 7827-7836. (10.1007/s11356-013-1737-3)
• Zoannou, K., Sapsford, D. J. and Griffiths, A. J. 2013. Thermal degradation of monoethanolamine and its effect on CO2 capture capacity.. International Journal of Greenhouse Gas Control 17, pp. 423-430. (10.1016/j.ijggc.2013.05.026)
• Littler, J., Geroni, J. N., Sapsford, D. J., Coulton, R. and Griffiths, A. J. 2013. Mechanisms of phosphorous removal by cement-bound ochre pellets. Chemosphere 90(4), pp. 1533-1538. (10.1016/j.chemosphere.2012.08.054)

2012

• Geroni, J. N., Cravotta, C. A. and Sapsford, D. J. 2012. Evolution of the chemistry of Fe bearing waters during CO2 degassing. Applied Geochemistry 27(12), pp. 2335-2347. (10.1016/j.apgeochem.2012.07.017)
• Sapsford, D. J., Bowell, R. J., Geroni, J. N., Penman, K. M. and Dey, M. 2012. Factors influencing the release of uranium, thorium, yttrium and rare earth elements from a low grade ore. Minerals Engineering 39, pp. 165-172. (10.1016/j.mineng.2012.08.002)

2011

• Pullin, H., Konstantinou, E., Sapsford, D. J. and Marsh, R. 2011. The effects of coal rank, temperature and residence time on the chemical composition of tar condensates. Presented at: 11th International Mine Water Association Congress (IMWA2011) – Mine Water – Managing the Challenges, Aachen, Germany, 4-11 September 2011 Presented at Rüde, R. T., Freund, A. and Wolkersdorfer, C. eds.Mine Water – Managing the Challenges. Aachen: IMWA pp. 197-201.
• Jaafar, I., Griffiths, A. J., Hopkins, A. C., Steer, J. M., Griffiths, M. H. and Sapsford, D. J. 2011. An evaluation of chlorination for the removal of zinc from steelmaking dusts. Minerals Engineering 24(9), pp. 1028-1030. (10.1016/j.mineng.2011.04.026)
• Geroni, J. N. and Sapsford, D. J. 2011. Kinetics of iron (II) oxidation determined in the field. Applied Geochemistry 26(8), pp. 1452-1457. (10.1016/j.apgeochem.2011.05.018)
• Konstantinou, E., Marsh, R., Pullin, H. and Sapsford, D. J. 2011. Reactivity of Welsh coal-derived chars to carbon dioxide. Presented at: 5th European Combustion Meeting (ECM 2011), Cardiff, Wales, UK, 27 June - 1 July 2011.
• Hutton-Ashkenny, H., Bowell, R., Dey, M., Cheung, L., Gilders, R. and Sapsford, D. J. 2011. Lime-roast Dechlorination of Lead-bearing Residues from a Novel Zinc Recovery Process. Presented at: Processing of Zinc Ores and Concentrates 2010 (Zinc Processing '10), Cape Town, South Africa, 13 November 20102nd International Symposium on the Processing of Zinc Ores and Concentrates 2010. Red Hook, NY: Curran Associates pp. 33-46.
• Konstantinou, E., Marsh, R. and Sapsford, D. J. 2011. Reactivity of Welsh coal-derived chars to carbon dioxide. Presented at: Fifth European Combustion Meeting (ECM 2011), Cardiff, UK, 29 June - 1 July 2011.
• Bowell, R. J., Grogan, J., Hutton-Ashkenny, M., Brough, C. P., Penman, K. M. and Sapsford, D. J. 2011. Geometallurgy of uranium deposits. Minerals Engineering 24(12), pp. 1305-1313. (10.1016/j.mineng.2011.05.005)
• Warrender, R. et al. 2011. Field Trials of Low-cost Reactive Media for the Passive Treatment of Circum-neutral Metal Mine Drainage in Mid-Wales, UK. Mine Water and the Environment 30(2), pp. 82-89. (10.1007/s10230-011-0150-8)
• Geroni, J., Sapsford, D. J. and Watson, I. 2011. The potential for semi-passive mine water treatment by CO2 stripping at Ynysarwed, S Wales. Presented at: International Mine Water Association Symposium – Mine Water and Innovative Thinking, Sydney, Nova Scotia, Canada, 5 – 9 September 2010 Presented at Wolkersdorfer, C. and Freund, A. eds.Mine Water and Innovative Thinking. Cape Breton, Canada: CBU Press pp. 123-126.
• Sapsford, D. J., Penman, K. M., Bowell, R. J. and Dey, M. 2011. Laboratory simulation and optimisation of stope leaching of low-grade uranium ore. Presented at: Bio- and Hydrometallurgy Conference 2010 (BIOHYDROMET 10), Cape Town, South Africa, 8-9 November 2010Bio- and Hydrometallurgy 2010. Red Hook, NY: Curran Associates pp. 202-212.
• Dey, M. et al. 2011. The Minex Process: a novel process for the recovery of zinc and associated metals from metallurgical wastes. Presented at: Processing of Zinc Ores and Concentrates. 2nd International Symposium, 2010, Cape Town, South Africa, 13 November 20102nd International Symposium on the Processing of Zinc Ores and Concentrates 2010 (Zinc Processing '10) Proceedings, Vol. 1. Curran Associates pp. 84-93.
• Sapsford, D. J. and Watson, I. 2011. A process-orientated design and performance assessment methodology for passive mine water treatment systems. Ecological Engineering 37(6), pp. 970-975. (10.1016/j.ecoleng.2010.12.010)

2010

• Jaafar, I., Griffiths, A. J., Hopkins, A., Hutton-Ashkenny, M., Steer, J. M., Griffiths, M. H. and Sapsford, D. J. 2010. Chloride roasting for the removal of zinc from steelmaking dusts. Presented at: Processing of Zinc Ores and Concentrates: 2nd International Symposium (Zinc Processing '10), Cape Town, South Africa, 10-13 November 2010.
• Suvio, P., Sapsford, D. J., Griffiths, A. J., Williams, K. P., Davies, J. D. and Maynard, S. 2010. High-density sludge process applied to metal-containing effluent. Presented at: Tenth International Conference on Modelling, Monitoring and Management of Water Pollution, Bucharest, Romania, 9-11 June 2010 Presented at Brebbia, C. A. and Marinov, A. M. eds.Water Pollution X. WIT Transactions on Ecology and the Environment Vol. 135. Southampton: WIT Press pp. 289-299.
• Jaafar, I. et al. 2010. Chloride roasting for the recovery of zinc from steelmaking dusts. Presented at: 2nd International Symposium on the Processing of Zinc Ores and Concentrates 2010 (Zinc Processing '10), Cape Town, South Africa, 13 November 2010Proceedings of the 2nd International Symposium on the Processing of Zinc Ores and Concentrates 2010. Red Hook, NY: Curran Associates pp. 47-63.

2009

• Sapsford, D. J. and Williams, K. P. 2009. Sizing criteria for a low footprint passive mine water treatment system. Water Research 43(2), pp. 423-432. (10.1016/j.watres.2008.10.043)
• Sapsford, D. J., Bowell, R. J., Dey, M. and Williams, K. P. 2009. Humidity cell tests for the prediction of acid rock drainage. Minerals Engineering 22(1), pp. 25-36. (10.1016/j.mineng.2008.03.008)
• Barnes, A., Sapsford, D. J., Dey, M. and Williams, K. P. 2009. Heterogeneous Fe(ii) oxidation and zeta potential. Journal of Geochemical Exploration 100(02-Mar), pp. 192-198. (10.1016/j.gexplo.2008.06.001)
• Abdulgawad, F., Bockelmann-Evans, B. N., Sapsford, D. J., Williams, K. P. and Falconer, R. A. 2009. Ammonium ion adsorption on clays and sand under freshwater and seawater conditions. Presented at: 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS, Nanjing, China, 20-23 October 2008 Presented at Zhang, C. and Tang, H. eds.Advances in Water Resources and Hydraulic Engineering: Proceedings of 16th IAHR-APD Congress and 3rd Symposium of IAHR-ISHS, Vol. Vol.2. Berlin: Springer pp. 656-661., (10.1007/978-3-540-89465-0_115)
• Geroni, J. N., Bowell, R. J., Dey, M., Sapsford, D. J. and Williams, K. P. 2009. Removal of arsenic (III) from contaminated waters usinf iron (ii) and citrate. Presented at: Securing the Future and 8th International Conference on Acid Rock Drainage, Skelleftea, Sweden.
• Geroni, N., Sapsford, D. J., Barnes, A., Watson, I. and Williams, K. P. 2009. Current performance of passive treatment systems in South Wales. Presented at: International Mine Water Association Conference, Pretoria, South Africa. Water Institute of Southern Africa's Mine Water Division & International Mine Water Association
• Barnes, A. et al. 2009. The assessment of the ARD potential for a 'Climax' type porphyry molybdenum deposit in a high arctic environment. Presented at: Securing the Future and 8th International Conference on Acid Rock Drainage, Skelleftea, Sweden.
• Watson, I. A., Taylor, K., Sapsford, D. J. and Banks, D. 2009. Tracer testing to investigate hydraulic performance of a RAPS Treating Mine Water in South Wales. Presented at: Securing the Future and 8th International Conference on Acid Rock Drainage, Skelleftea, Sweden.
• Littler, J., Griffiths, A. J., Sapsford, D. J., Williams, K. P. and Coulton, R. 2009. Removal of phosphorous from wastewater using sediments from treated acid mine drainage. Presented at: 3rd International Conference on Advances in Mineral Resources Management and Environmental Geotechnology (AMIREG), Assessing the Footprint of Resource Utilisation and Hazardous Waste Management, Athens, Greece, 7-9 September 2009Proceedings of the 3rd International Conference on Advances in Mineral Resources Management and Environmental Geotechnology (AMIREG), Assessing the Footprint of Resource Utilisation and Hazardous Waste Management, Athens, Greece. pp. 265-270.
• Sapsford, D. J., Watson, I. A. and Williams, K. P. 2009. Chemical and hydraulic characterisation of passive mine water treatment systems in S. Wales. Presented at: Securing the Future and 8th International Conference on Acid Rock Drainage, Skelleftea, Sweden.

2008

• Sapsford, D. J. and Williams, K. P. 2008. A low maintenance system for removal of iron and manganese from contaminated groundwaters. Presented at: Proceedings of the 2nd European Water and Wastewater Conference, Birmingham, UK Presented at Horan, N. ed. Aqua Enviro
• Abdulgawad, F., Bockelmann-Evans, B. N., Sapsford, D., Williams, K. and Falconer, R. 2008. Ammonium ion adsorption on clays and sand under freshwater and seawater conditions. Presented at: Proceedings of the 16th International Association of Hydraulic Engineering and Research - Asia and Pacific Division (IAHR-APD) Congress and 3rd International Association of Hydraulic Engineering and Research - International Symposium on Hydraulic Structur, Nanjing, China, Vol. II. Tsinghua University Press pp. 656-661.
• Sapsford, D. J., Bowell, R. J., Dey, M., Williams, M. C. and Williams, K. P. 2008. A comparison of kinetic NAG tests with static and humidity cell tests for the prediction of ARD. Presented at: Proceedings of the 10th International Mine Water Association Congress, Proceedings of the 10th International Mine Water Association Congress., Karlovy Vary, Czech Republic.
• Barnes, A., Sapsford, D. J., Dey, M. and Williams, K. P. 2008. Non oxidisable sorbed Fe(II): Indicator of strong and weak site adsorption at the goethite surface. Presented at: Proceedings of the 10th International Mine Water Association Congress, Karlovy Vary, Czech Republic.

2007

• Barnes, A., Sapsford, D. J., Dey, M. and Williams, K. P. 2007. Heterogeneous Fe(ii) oxidation and zeta potential. Presented at: Proceedings of the International Mine Water Association Symposium, Cagliari, Italy.
• Sapsford, D. J., Barnes, A., Dey, M. and Williams, K. P. 2007. Low footprint mine water treatment: Field demonstration and application. Presented at: Proceedings of the International Mine Water Association Symposium 2007, Cagliari, Italy.
• Sapsford, D. J., Barnes, A., Dey, M., Williams, K. P. and Younger, P. 2007. Low footprint mine water treatment: field demonstration and application. Mine Water and the Environment, Journal of International Mine Water Association 26(4), pp. 243-250. (10.1007/s10230-007-0012-6)

2006

• Barnes, A., Sapsford, D. J., Dey, B. M., Williams, K. P. and Liang, L. 2006. Oxidation of Fe(II) by molecular oxygen in the presence of Fe(OH)3 surfaces and elevated carbonate concentrations: consequences for passive mine water treatment.. Presented at: AMIREG 2nd international Conference, Advances in Mineral Resources Management and Environmental Geotechnology, Hania, Greece.
• Sapsford, D. J., Barnes, A., Dey, M., Williams, K. P., Jarvis, A., Younger, P. and Liang, L. 2006. Iron and manganese removal in a vertical flow reactor for passive treatment of mine water. Presented at: Proceedings of the 7th International Conference on Acid Rock Drainage (ICARD), St. Louis, USA. American Society of Mining and Reclamation pp. 1831-1843.
• Bowell, R., Sapsford, D. J., Dey, B. M. and Williams, K. P. 2006. Protocols affecting the reactivity of mine waste during laboratory based-kinetic tests.. Presented at: 7th International Conference on Acid Rock Drainage, ICARD, St Louis, USA. ASMR, 3134 Montavesta Rd., Lexington, KY, 40502
• Younger, P. L. and Sapsford, D. J. 2006. Acid drainage prevention guidelines for scottish opencast coal mining: The primacy of the conceptual model. Presented at: Proceedings of the 7th International Conference on Acid Rock Drainage, St Louis, USA. Society of Mining and Reclamation pp. 2558-2570.

2005

• Sapsford, D. J., Williams, K. P. and Bowell, R. 2005. Predominant chemical kinetics in laboratory prediction of ARD. Presented at: Proceedings of the 9th International Mine Water Association Congress, Spain, Oviedo, Spain Presented at Pendas, L. J. ed. pp. 57-65.
• Sapsford, D. J., Williams, K. P., Dey, B. M., Liang, L. and Barnes, A. 2005. A novel method for passive treatment of mine water using a vertical flow accretion system. Presented at: Proceedings of the 9th International Mine Water Association Congress, Oviedo, Spain Presented at Loredo, J. and Pendas, F. eds. pp. 389-394.

2004

• Sapsford, D. J., Williams, K. P., Dey, B. M. and Bowell, R. 2004. Laboratory prediction of acid rock drainage. Presented at: Proceedings. of Advances in Mineral Resources Management and Environmental Geotechnology, Chania, Greece Presented at Agioutantis, Z. . and Komniatas, K. eds. pp. 501-506.
• Younger, P. L. and Sapsford, D. J. 2004. Evaluating the potential impact of opencast coal mining on water quality (Groundwater Regulations 1998). An assessment framework for Scotland. Available at: http://www.sepa.org.uk/water/water_regulation/regimes/groundwater/engineering.aspx

2003

• King, E., Bottrell, S. H., Sapsford, D. J. and Raiswell, R. 2003. Modelling carbon fluxes in a constructed wetland. Land Contamination and Reclamation 11(2), pp. 199-203. (10.2462/09670513.815)

2002

• King, E., Bottrell, S., Sapsford, D. J. and Raiswell, R. 2002. Modelling carbon fluxes in a constructed wetland. Presented at: Proceedings of Mine Water 2004 - Process, Policy and Progress, Newcastle upon Tyne, UK.