Now showing items 5-24 of 40

  • Comparative assessment of visible light and UV active photocatalysts by hydroxyl radical quantification. 

    Nagarajan, Sanjay; Skillen, Nathan; Fina, Federica; Zhang, Guan; Randorn, Chamnan; Lawton, Linda A.; Irvine, John T. S.; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.jphotochem.2016.10.034, 2016-11-03)
    NAGARAJAN, S., SKILLEN, N.C., FINA, F., ZHANG, G., RANDORN, C., LAWTON, L.A., IRVINE, J.T.S. and ROBERTSON, P.K.J. 2016. Comparative assessment of visible light and UV active photocatalysts by hydroxyl radical quantification. Journal of photochemistry and photobiology A: chemistry [online], 334, pages 13-19. Available from: http://dx.doi.org/10.1016/j.jphotochem.2016.10.034
    A simple method for determining hydroxyl radical yields on semiconductor photocatalysts is highly desirable, especially when comparing different photocatalyst materials. This paper reports the screening of a selection of ...
  • A comparison of the effectiveness of TiO2 photocatalysis and UVA photolysis for the destruction of three pathogenic micro-organisms. 

    Robertson, Jeanette M. C.; Robertson, Peter K. J.; Lawton, Linda A. (Elsevier http://dx.doi.org/10.1016/j.jphotochem.2005.04.033, 2005-09)
    ROBERTSON, J. M. C., ROBERTSON, P. K. J. and LAWTON, L. A., 2005. A comparison of the effectiveness of TiO2 photocatalysis and UVA photolysis for the destruction of three pathogenic micro-organisms. Journal of Photochemistry and Photobiology A: Chemistry, 175 (1), pp. 51-56.
    TiO2 photocatalysis has demonstrated efficacy as a treatment process for water contaminated with chemical pollutants. When exposed to UVA light TiO2 also demonstrates an effective bactericidal activity. The mechanism of ...
  • The contribution of small-scale wind and photovoltaic renewable energy sources to the Scottish energy mix. 

    Fowler, Ailsa Mhairi (Robert Gordon University School of Engineering, 2011-04)
    Energy needs in the UK are currently met primarily through the use of finite resources, such as oil, coal and gas. The use of these fuels has led to an increase in greenhouse gas emissions. There is a need for a more ...
  • Controlled periodic illumination in semiconductor photocatalysis. 

    Tokode, Oluwatosin; Prabhu, Radhakrishna; Lawton, Linda A.; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.jphotochem.2015.12.002, 2015-12-12)
    TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2015. Controlled periodic illumination in semiconductor photocatalysis. Journal of photochemistry and photobiology A: chemistry [online], 319-320, pages 96-106. Available from: http://dx.doi.org/10.1016/j.jphotochem.2015.12.002
    Controlled periodic illumination is a hypothesis postulated in the early 1990s for enhancing the efficiency of semiconductor photocatalytic reactions. This technique has been proposed to improve photocatalytic efficiency ...
  • The degradation of microcystin-LR using doped visible light absorbing photocatalysts. 

    Graham, Douglas J. L.; Kisch, Horst; Lawton, Linda A.; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.chemosphere.2009.12.003, 2010-02)
    GRAHAM, D., KISCH, H., LAWTON, L. A. and ROBERTSON, P. K. J., 2010. The degradation of microcystin-LR using doped visible light absorbing photocatalysts. Chemosphere, 78 (9), pp. 1182-1185.
    Microcystins are one of the primary hepatotoxic cyanotoxins released from cyanobacteria. The presence of these compounds in water has resulted in the death of both humans and domestic and wild animals. Although microcystins ...
  • The destruction of 2-methylisoborneol and geosmin using titanium dioxide photocatalysis. 

    Lawton, Linda A.; Robertson, Peter K. J.; Robertson, Russell F.; Bruce, Fiona G. (Elsevier http://www.elsevier.com/wps/find/journaldescription.cws_home/523066/description#description, 2003-08-08)
    LAWTON, L., ROBERTSON, P., ROBERTSON, R. and BRUCE, F., 2003. The destruction of 2-methylisoborneol and geosmin using titanium dioxide photocatalysis. Applied Catalysis B. Environmental. Volume 44 (1) pp. 9-13
    Geosmin (GSM) and 2-methylisoborneol (MIB) are semi-volatile compounds produced by cyanobacteria in surface waters. These compounds present problems to the drinking water industry and in aquaculture because they can taint ...
  • Destruction of cyanobacterial toxins by semiconductor photocatalysis. 

    Robertson, Peter K. J.; Lawton, Linda A.; Munch, Burkhard; Rouzade, Julien (Royal Society of Chemistry http://www.rsc.org/Publishing/Journals/CC/Index.asp, 1997)
    ROBERTSON, P., LAWTON, L., MUNCH, B. and ROUZADE, J., 1997. Destruction of cyanobacterial toxins by semiconductor photocatalysis. Chemical Communications. Issue 4, pp. 393-394
    The rapid destruction of microcystin, a cyanobacterial toxin, using a titanium dioxide photocatalyst is observed; the process is extremely efficient with high concentrations of toxin completely undetectable within 10–40 ...
  • Detection, analysis, and photocatalytic destruction of the freshwater taint compound geosmin 

    Bellu, Edmund (The Robert Gordon University Faculty of Health and Social Care. School of Life Sciences., 2007-04)
    A significant issue affecting the aquaculture and water industries is the presence of off-flavour compounds in water, which cause problems by imparting an undesirable earthy/musty flavour and smell to water and fish. ...
  • Development of a doped titania immobilised thin film multi tubular photoreactor. 

    Adams, Morgan; Skillen, Nathan; McCullagh, Cathy; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.apcatb.2012.10.008, 2013-02)
    ADAMS, M., SKILLEN, N., MCCULLAGH, C. and AL-KHATIB, S. and ROBERTSON, P. K. J., 2013. Development of a doped titania immobilised thin film multi tubular photoreactor. Applied Catalysis B: Environmental, 130, pp. 99-105.
    This paper describes a novel doped titania immobilised thin film multi tubular photoreactor which has been developed for use with liquid, vapour or gas phase media. In designing photocatalytic reactors measuring active ...
  • Development of an innovative and environmentally sustainable solid waste stream treatment process. 

    Ramachandran, Vinod (The Robert Gordon University School of Engineering, 2010-11)
    Oily sludges and oil contaminated solid wastes are generated from various sources such as from a) interceptors in petrol stations, automobile garages and rail service stations b) tank oil bottoms from crude oil storage ...
  • Directly enhancing the photocatalytic transformation of CO2 and water to renewable fuels. 

    Skillen, Nathan (Robert Gordon University School of Engineering, 2013-06)
    The increases in Greenhouse Gas (GHG) concentrations and depletion of hydrocarbon based fuels have become global concerns. As a result, a number of methods are being developed which aim to restrict GHG and to develop ...
  • The effect of pH on the photonic efficiency of the destruction of methyl orange under controlled periodic illumination with UV-LED sources. 

    Tokode, Oluwatosin; Prabhu, Radhakrishna; Lawton, Linda A.; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.cej.2014.03.002, 2014-03-12)
    TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2014. The effect of pH on the photonic efficiency of the destruction of methyl orange under controlled periodic illumination with UV-LED sources. Chemical engineering journal [online], 246, pages 337-342. Available from: http://dx.doi.org/10.1016/j.cej.2014.03.002
    The nature of photon interaction and reaction pH can have significant impacts on semiconductor photocatalysis. This paper describes the effect of pH on the photonic efficiency of photocatalytic reactions in the aqueous ...
  • From ideal reactor concepts to reality: the novel drum reactor for photocatalytic wastewater treatment. 

    Adams, Morgan; Campbell, Ian; McCullagh, Cathy; Russell, Donnacha; Bahnemann, Detlef W.; Robertson, Peter K. J. (De Gruyter http://dx.doi.org/10.1515/ijcre-2012-0012, 2013-08)
    ADAMS, M., CAMPBELL, I., MCCULLAGH, C., RUSSELL, D., BAHNEMANN, D. W. and ROBERTSON, P. K. J., 2013. From ideal reactor concepts to reality: the novel drum reactor for photocatalytic wastewater treatment. International Journal of Chemical Reactor Engineering, 11 (2), pp. 621–632.
    This article reports the development of a novel drum photocatalytic reactor for treating dye effluent streams. The parameters for operation including drum rotation speed, light source distance, catalyst loading 10 and ...
  • Hydrodynamic and economic modelling of tidal current energy conversion systems. 

    Melville, Guy T. (Robert Gordon University School of Engineering, 2008-11)
    This thesis examines the contribution of computational modelling to the development of the tidal current energy industry, against the background of increasing commercial, government, academic and public interest. It does ...
  • An investigation of the relationship between anterior knee pain and lower limb biomechanics. 

    Duncan, Gillian (Robert Gordon University School of Health Sciences., 2011-01)
    The thesis presents an investigation of the relationship between anterior knee pain and lower limb biomechanics in symptomatic and asymptomatic individuals during walking. Although foot orthotic devices are often prescribed ...
  • Mathematical modelling of quantum yield enhancements of methyl orange photooxidation in aqueous TiO2 suspensions under controlled periodic UV LED illumination. 

    Tokode, Oluwatosin; Prabhu, Radhakrishna; Lawton, Linda A.; Robertson, Peter K. J. (Elsevier http://dx.doi.org/10.1016/j.apcatb.2014.03.046, 2014-03-30)
    TOKODE, O., PRABHU, R., LAWTON, L.A. and ROBERTSON, P.K.J. 2014. Mathematical modelling of quantum yield enhancements of methyl orange photooxidation in aqueous TiO2 suspensions under controlled periodic UV LED illumination. Applied catalysis B: environmental [online], 156-157, pages 398-403. Available from: http://dx.doi.org/10.1016/j.apcatb.2014.03.046
    Quantum yields of the photocatalytic degradation of methyl orange under controlled periodic illumination (CPI) have been modelled using existing models. A modified Langmuir-Hinshelwood (L-H) rate equation was used to predict ...
  • Mechanistic and toxicity studies of the photocatalytic oxidation of microcystin-LR. 

    Liu, Iain; Lawton, Linda A.; Cornish, Benjamin J. P. A.; Robertson, Peter K. J. (Elsevier http://www.elsevier.com/wps/find/journaldescription.cws_home/504091/description#description, 2002-05-31)
    LIU, I., LAWTON, L., CORNISH, B. and ROBERTSON, P., 2002. Mechanistic and toxicity studies of the photocatalytic oxidation of microcystin-LR. Journal of Photochemistry and Photobiology A. Chemistry. Volume 148 (1-3), pp. 349-354
    Cyanobacterial toxins present in drinking water sources pose a considerable threat to human health. Conventional water treatment systems have proven unreliable for the removal of these toxins and hence new techniques have ...
  • A new generation of biocides for control of crustacea in fish farms. 

    Robertson, Peter K. J.; Black, Kenneth D.; Adams, Morgan; Willis, Kate; Buchan, Fraser; Orr, Heather; Lawton, Linda A.; McCullagh, Cathy (Elsevier http://dx.doi.org/10.1016/j.jphotobiol.2008.12.009, 2009-04)
    ROBERTSON, P. K. J., BLACK, K. D., ADAMS, M., WILLIS, K., BUCHAN, F., ORR, H., LAWTON, L. and McCULLAGH, C., 2009. A new generation of biocides for control of crustacea in fish farms. Journal of Photochemistry and Photobiology B: Biology, 95 (1), pp. 58-63.
    Farming of salmon has become a significant industry in many countries over the past two decades. A major challenge facing this sector is infestation of the salmon by sea lice. The main way of treating salmon for such ...
  • A novel method of producing microbubbles for targeted drug delivery. 

    Fiabane, Joe (Robert Gordon University Faculty of Design and Technology. School of Engineering., 2016-01)
    FIABANE, J. 2016. A novel method of producing microbubbles for targeted drug delivery. Robert Gordon University, PhD thesis.
    Microbubbles, currently employed in diagnostic ultrasound as a contrast agent, have a potential new application as vehicles for targeted drug delivery, which could revolutionise medicine by eliminating side-effects. A new ...
  • Novel photocatalytic reactor development for removal of hydrocarbons from water. 

    Adams, Morgan; Campbell, Ian; Robertson, Peter K. J. (Hindawi http://dx.doi.org/10.1155/2008/674537, 2008)
    ADAMS, M., CAMPBELL, I. and ROBERTSON, P. K. J., 2008. Novel photocatalytic reactor development for removal of hydrocarbons from water. International Journal of Photoenergy, Volume 2008, Article ID 674537.
    Hydrocarbons contamination of the marine environment generated by the offshore oil and gas industry is generated from a number of sources including oil contaminated drill cuttings and produced waters. The removal of ...