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A study of the kinetic solvent isotope effect on the destruction of microcystin-LR and geosmin using TiO2 photocatalysis. (2011)
Journal Article
ROBERTSON, P.K.J., BAHNEMANN, D.W., LAWTON, L.A. and BELLU, E. 2011. A study of the kinetic solvent isotope effect on the destruction of microcystin-LR and geosmin using TiO2 photocatalysis. Applied catalysis B: environmental [online], 108-109, pages 1-5. Available from: https://doi.org/10.1016/j.apcatb.2011.07.019

We have previously reported the effectiveness of TiO2 photocatalysis in the destruction of species generated by cyanobacteria, specifically geosmin and microcystin-LR. In this paper we report an investigation of factors which influence the rate of th... Read More about A study of the kinetic solvent isotope effect on the destruction of microcystin-LR and geosmin using TiO2 photocatalysis..

Evaluation of methodology for detection and quantification of coliform bacteria and their survival in soil and water. (2010)
Thesis
BANNISTER, E. 2010. Evaluation of methodology for detection and quantification of coliform bacteria and their survival in soil and water. Robert Gordon University, PhD thesis.

In Aberdeenshire, approximately 25,000 people rely on potable water from private water supplies. Many of these supplies are of questionable quality with regards to microbiological contamination, which is often due to a lack of maintenance and protect... Read More about Evaluation of methodology for detection and quantification of coliform bacteria and their survival in soil and water..

The degradation of microcystin-LR using doped visible light absorbing photocatalysts. (2010)
Journal Article
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 [online], 78(9), pages 1182-1185. Available from: https://doi.org/10.1016/j.chemosphere.2009.12.003

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 are chemically stable tita... Read More about The degradation of microcystin-LR using doped visible light absorbing photocatalysts..

The photocatalytic decomposition of microsystin-LR using selected titanium dioxide materials. (2009)
Journal Article
LIU, I., LAWTON, L.A., BAHNEMANN, D.W., LIU, L., PROFT, B. and ROBERTSON, P.K.J. 2009. The photocatalytic decomposition of microsystin-LR using selected titanium dioxide materials. Chemosphere [online], 76(4), pages 549-553. Available from: https://doi.org/10.1016/j.chemosphere.2009.02.067

Microcystins (cyclic heptapeptides) produced by a number of freshwater cyanobacteria are a potential cause for concern in potable water supplies due to their acute and chronic toxicity. TiO2 photocatalysis is a promising technology for removal of the... Read More about The photocatalytic decomposition of microsystin-LR using selected titanium dioxide materials..

A new generation of biocides for control of crustacea in fish farms. (2008)
Journal Article
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 [online], 95(1), pages 58-63. Available from: https://doi.org/10.1016/j.jphotobiol.2008.12.009

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 infestations is the use of medici... Read More about A new generation of biocides for control of crustacea in fish farms..

Photocatalytic destruction of geosmin using novel pelleted titanium dioxide. (2008)
Journal Article
BELLU, E., LAWTON, L.A. and ROBERTSON, P.K.J. 2008. Photocatalytic destruction of geosmin using novel pelleted titanium dioxide. Journal of advanced oxidation technologies [online], 11(2), pages 384-388. Available from: https://doi.org/10.1515/jaots-2008-0225

Geosmin is produced by cyanobacteria and actinomycetes in surface waters. It causes undesirable earthy off-flavours in freshwater fish and is a major concern for the drinking water industry. This paper presents the first published study on the use of... Read More about Photocatalytic destruction of geosmin using novel pelleted titanium dioxide..

Bioavailability of organic contaminants in sediments. (2008)
Thesis
YATES, K. 2008. Bioavailability of organic contaminants in sediments. Robert Gordon University, PhD thesis.

The bioavailability of polycyclic aromatic hydrocarbons (PAHs) and chlorobiphenyls (CBs) in sediments is largely dependent on the freely dissolved concentration of these pollutants. However, measuring these is challenging, due to the low concentratio... Read More about Bioavailability of organic contaminants in sediments..

Passive sampling: partition coefficients for a silicone rubber reference phase. (2007)
Journal Article
YATES, K., DAVIES, I., WEBSTER, L., POLLARD, P., LAWTON, L. and MOFFAT, C. 2007. Passive sampling: partition coefficients for a silicone rubber reference phase. Journal of environmental monitoring [online], 9(10), pages 1116-1121. Available from: https://doi.org/10.1039/B706716J

Silicone rubber sheeting can be used as a passive sampling device for hydrophobic organic contaminants in the environment to determine the available concentrations in water and sediments. Reliable sampler-water partition coefficients are required to... Read More about Passive sampling: partition coefficients for a silicone rubber reference phase..

An investigation into factors influencing the production and degradation of microcystins. (2007)
Thesis
GRAHAM, D.J.L. 2007. An investigation into factors influencing the production and degradation of microcystins. Robert Gordon University, PhD thesis.

Microcystins (MCYST) potently inhibit protein phosphatases and these cyclic heptapeptides are powerful hepatotoxins. They are known to be secondary metabolites produced by several species of cyanobacteria. The release of these peptides into water sup... Read More about An investigation into factors influencing the production and degradation of microcystins..

Degradation of microcystin-LR by aquatic bacteria. (2007)
Thesis
GHIMIRE, B.S. 2007. Degradation of microcystin-LR by aquatic bacteria. Robert Gordon University, PhD thesis.

Microcystins are cyclic heptapeptide toxins produced by cyanobacteria. They are potentially a threat to human and domestic animals so are of worldwide interest. Microcystin-LR is stable in various environmental conditions. It is important to know the... Read More about Degradation of microcystin-LR by aquatic bacteria..

Detection, analysis, and photocatalytic destruction of the freshwater taint compound geosmin. (2007)
Thesis
BELLU, E. 2007. Detection, analysis, and photocatalytic destruction of the freshwater taint compound geosmin. Robert Gordon University, PhD thesis.

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. Two predominant off-flavour compo... Read More about Detection, analysis, and photocatalytic destruction of the freshwater taint compound geosmin..

The photocatalytic destruction of the cyanotoxin, nodularin using Ti02. (2005)
Journal Article
LIU, I., LAWTON, L.A., BAHNEMANN, D.W. and ROBERTSON, P.K.J. 2005. The photocatalytic destruction of the cyanotoxin, nodularin using Ti02. Applied catalysis B: environmental [online], 60(3-4), pages 245-252. Available from: https://doi.org/10.1016/j.apcatb.2005.03.006

Titanium dioxide (TiO2) photocatalysis has been used to initiate the destruction of nodularin, a natural hepatotoxin produced by cyanobacteria. The destruction process was monitored using liquid chromatography-mass spectrometry analysis which has als... Read More about The photocatalytic destruction of the cyanotoxin, nodularin using Ti02..

A comparison of the effectiveness of TiO2 photocatalysis and UVA photolysis for the destruction of three pathogenic micro-organisms. (2005)
Journal Article
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 [online], 175(1), pages 51-56. Available from: https://doi.org/10.1016/j.jphotochem.2005.04.033

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 this process has been reported... Read More about A comparison of the effectiveness of TiO2 photocatalysis and UVA photolysis for the destruction of three pathogenic micro-organisms..

Occurrence of toxigenic cyanobacterial blooms in freshwaters of Sri Lanka. (2005)
Journal Article
JAYATISSA, L.P., SILVA, E.I.L., MCELHINEY, J. and LAWTON, L.A. 2006. Occurrence of toxigenic cyanobacterial blooms in freshwaters in Sri Lanka. Systematic and applied microbiology [online], 29(2), pages 156-164. Available from: https://doi.org/10.1016/j.syapm.2005.07.007

A previous pioneering study of freshwater bodies in Sri Lanka revealed the presence of toxic cyanobacteria in three out of four water bodies tested. It was therefore important to perform a more detailed investigation into the presence of cyanobacteri... Read More about Occurrence of toxigenic cyanobacterial blooms in freshwaters of Sri Lanka..

The destruction of 2-methylisoborneol and geosmin using titanium dioxide photocatalysis. (2003)
Journal Article
LAWTON, L.A., ROBERTSON, P.K.J., ROBERTSON, R.F. and BRUCE, F.G. 2003. The destruction of 2-methylisoborneol and geosmin using titanium dioxide photocatalysis. Applied catalysis B: environmental [online], 44(1), pages 9-13. Available from: https://doi.org/10.1016/S0926-3373(03)00005-5

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 water and fish producing an... Read More about The destruction of 2-methylisoborneol and geosmin using titanium dioxide photocatalysis..

Processes influencing surface interaction and photocatalytic destruction of microcystins on titanium dioxide photocatalysts. (2002)
Journal Article
LAWTON, L., ROBERTSON, P., CORNISH, B., MARR, I. and JASPARS, M. 2003. Processes influencing surface interaction and photocatalytic destruction of microcystins on titanium dioxide photocatalysts. Journal of catalysis [online], 213(1), pages 109-113. Available from: https://doi.org/10.1016/S0021-9517(02)00049-0

Microcystins are a family of hepatotoxic peptides produced by freshwater cyanobacteria. Their occurrence in drinking water is of concern since chronic exposure to these toxins causes tumor promotion. It is therefore essential to establish a reliable... Read More about Processes influencing surface interaction and photocatalytic destruction of microcystins on titanium dioxide photocatalysts..

Mechanistic and toxicity studies of the photocatalytic oxidation of microcystin-LR. (2002)
Journal Article
LIU, I., LAWTON, L.A., CORNISH, B. and ROBERTSON, P., 2002. Mechanistic and toxicity studies of the photocatalytic oxidation of microcystin-LR. Journal of photochemistry and photobiology A: chemistry [online], 148(1-3), pages 349-354. Available from: https://doi.org/10.1016/S1010-6030(02)00062-X

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 been investigated. Previous... Read More about Mechanistic and toxicity studies of the photocatalytic oxidation of microcystin-LR..

The destruction of the cyanobacterial toxin microcystin-LR by semiconductor photocatalysis. (2000)
Thesis
CORNISH, B.J.P.A. 2000. The destruction of the cyanobacterial toxin microcystin-LR by semiconductor photocatalysis. Robert Gordon University, PhD thesis.

In fresh waters where cyanobacteria (blue-green algae) flourish, dense growths known as blooms occur. Such blooms present a threat to human and animal health as many of these cyanobacteria produce toxins. One such group of toxins are the microcystins... Read More about The destruction of the cyanobacterial toxin microcystin-LR by semiconductor photocatalysis..

Physico-chemical treatment methods for the removal of microcystins (cyanobacterial hepatotoxins) from potable waters. (1999)
Journal Article
LAWTON, L.A. and ROBERTSON, P.K.J. 1999. Physico-chemical treatment methods for the removal of microcystins (cyanobacterial hepatotoxins) from potable waters. Chemical society reviews [online], 28(4), pages 217-224. Available from: https://doi.org/10.1039/A805416I

The incidence of cyanobacterial blooms in freshwaters, including drinking water reservoirs, has increased over the past few decades due to rising nutrient levels. Microcystins are hepatotoxins released from cyanobacteria and have been responsible for... Read More about Physico-chemical treatment methods for the removal of microcystins (cyanobacterial hepatotoxins) from potable waters..

Purification, detection and biological effects of cyanobacterial toxins. (1999)
Thesis
MCELHINEY, J. 1999. Purification, detection and biological effects of cyanobacterial toxins. Robert Gordon University, PhD thesis.

The aesthetic beauty of a landscape is a very subjective issue: every person has their own opinions and their own idea of what beauty is. However, all people have a common evolutionary history, and, according to the Biophilia hypothesis, a genetic pr... Read More about Purification, detection and biological effects of cyanobacterial toxins..