James O. Leckie - Academia.edu (original) (raw)

Uploads

Papers by James O. Leckie

Research paper thumbnail of MOREL, F. M. M. 1983. Principles of aquatic chemistry. John Wiley & Sons, Inc., Somerset, N.J. 446 p. $49.95

Limnology and Oceanography, Mar 1, 1985

Research paper thumbnail of Numerical Modelling of Generation and Transport of Gas and Heat in Landfills I. Model Formulation

Waste Management & Research, Oct 1, 1996

A mathematical model for the generation and transport of gas and heat in a sanitary landfill was ... more A mathematical model for the generation and transport of gas and heat in a sanitary landfill was developed based on earlier work on the Mountain View Controlled Landfill Project (MVCLP) in California, U.S.A. The present model incorporates biokinetic model equations describing the dynamics of the microbial landfill ecosystem into multi-layer, time-dependent transport and generation of gas and heat models. It

Research paper thumbnail of Modeling Source/Linkage Analysis Uncertainty Using Simulation and Bayesian Networks for a Mercury TMDL in Northern California

Proceedings of the Water Environment Federation, 2005

Research paper thumbnail of Effect of reagent mixing rate on adsorption process for amorphous ferric oxide monohydrate

Environmental Science & Technology, Nov 1, 1981

Research paper thumbnail of Modeling particle transport and aggregation in a quiescent aqueous environment using the residence-time scheme

Water Resources Research, Aug 1, 2000

Research paper thumbnail of Adsorption and Transformation of Trace Element Species at Sediment/Water Interfaces

Research paper thumbnail of Ternary complex formation at mineral/solution interfaces

Research paper thumbnail of Cobalt(ll) Interactions with Marine Sediments Near-Coastal

Research paper thumbnail of Chemical Species in Freshwater and Terrestrial Systems

Springer eBooks, 1986

Group discussions were limited to metals and certain metalloids, except that N, P, and S were con... more Group discussions were limited to metals and certain metalloids, except that N, P, and S were considered in the broader topic of biogeochemical cycles. In many instances, the statements concerning metals are also applicable to many, or even most, other elements. However, our discussions were focused on the metals and metalloids because of their major importance as environmental pollutants.

Research paper thumbnail of Dermal exposure: The missing link

Occupational Health and Industrial Medicine, 1998

Research paper thumbnail of Biogeochemistry of phosphorus - Its role in ecosystem development. A preliminary statement on some possible research topics relevant to Surtsey and Iceland

Research paper thumbnail of Characterization of surface processes on mineral surfaces in aqueous solutions. Annual report for fiscal year 1993

Research paper thumbnail of Development of a simulation system for a continuous flow, quiescent, aqueous environment

Water Research, Apr 1, 2000

Research paper thumbnail of Adsorption and transformation of trace element species at sulfide/water interfaces

Applied Geochemistry, 1988

Research paper thumbnail of Hybrid coagulation–nanofiltration membrane for removal of bromate and humic acid in water

Journal of Membrane Science, Dec 1, 2010

Research paper thumbnail of Comparison of Submerged Membrane Bioreactor in Different SRT Conditions

Water Practice and Technology, 2006

Complete sludge retention MBR appears to be an innovative technology which no sludge will be prod... more Complete sludge retention MBR appears to be an innovative technology which no sludge will be produced, hence eliminating the sludge disposal cost. However, the understanding of microbial behaviour in the complete sludge retention MBR was still not adequately established. This study was conducted to investigate the biological performances and microbial behaviour of three different SRT MBRs (5 days SRT, 10 days SRT and prolonged SRT). The results revealed that membrane filtration assisted for maintaining the high degree of organic removal (above 97%) for all MBRs. High organic degradation was noticed in the prolonged SRT MBR (89.44%) compared with 5 days SRT (77.64%) and 10 days SRT (85.62%) MBRs. This showed that the prolonged SRT MBR posed a greater capability for further degradation of inert organics and SMP. Extremely low sludge yield (0.0388 g VSS/g COD) was occurred in the prolonged SRT condition compared with 5 and 10 days SRT conditions. The low SOUR did not affect the degrada...

Research paper thumbnail of Adsorption of UVI and Citric Acid on Goethite, Gibbsite, and Kaolinite: Comparing Results for Binary and Ternary Systems

Adsorption of Metals by Geomedia, 1998

... These observations lead to some hypotheses concerning the interactions be-tween a multidentat... more ... These observations lead to some hypotheses concerning the interactions be-tween a multidentate organic ligand ... molecule, the orientation of citrate on a nonhomogeneous surface (ie, with multiple crystal faces ... The effect of citrate on adsorption of UO|+ to goethite would be con ...

Research paper thumbnail of Subsurface injection of RO-treated waste water at a reclaimed land site

Proceedings of the 4th International Symposium on Environmental Hydraulics & 14th Congress of Asia and Pacific Division, International Association of Hydraulic Engineering and Research, 15-18 December 2004, Hong Kong, 2004

Research paper thumbnail of Impact of prolonged sludge retention time on the performance of a submerged membrane bioreactor

Desalination, Apr 1, 2007

Research paper thumbnail of Palladium−Indium Catalyzed Reduction of <i>N</i>-Nitrosodimethylamine: Indium as a Promoter Metal

Environmental Science & Technology, Mar 19, 2008

Research paper thumbnail of MOREL, F. M. M. 1983. Principles of aquatic chemistry. John Wiley & Sons, Inc., Somerset, N.J. 446 p. $49.95

Limnology and Oceanography, Mar 1, 1985

Research paper thumbnail of Numerical Modelling of Generation and Transport of Gas and Heat in Landfills I. Model Formulation

Waste Management & Research, Oct 1, 1996

A mathematical model for the generation and transport of gas and heat in a sanitary landfill was ... more A mathematical model for the generation and transport of gas and heat in a sanitary landfill was developed based on earlier work on the Mountain View Controlled Landfill Project (MVCLP) in California, U.S.A. The present model incorporates biokinetic model equations describing the dynamics of the microbial landfill ecosystem into multi-layer, time-dependent transport and generation of gas and heat models. It

Research paper thumbnail of Modeling Source/Linkage Analysis Uncertainty Using Simulation and Bayesian Networks for a Mercury TMDL in Northern California

Proceedings of the Water Environment Federation, 2005

Research paper thumbnail of Effect of reagent mixing rate on adsorption process for amorphous ferric oxide monohydrate

Environmental Science & Technology, Nov 1, 1981

Research paper thumbnail of Modeling particle transport and aggregation in a quiescent aqueous environment using the residence-time scheme

Water Resources Research, Aug 1, 2000

Research paper thumbnail of Adsorption and Transformation of Trace Element Species at Sediment/Water Interfaces

Research paper thumbnail of Ternary complex formation at mineral/solution interfaces

Research paper thumbnail of Cobalt(ll) Interactions with Marine Sediments Near-Coastal

Research paper thumbnail of Chemical Species in Freshwater and Terrestrial Systems

Springer eBooks, 1986

Group discussions were limited to metals and certain metalloids, except that N, P, and S were con... more Group discussions were limited to metals and certain metalloids, except that N, P, and S were considered in the broader topic of biogeochemical cycles. In many instances, the statements concerning metals are also applicable to many, or even most, other elements. However, our discussions were focused on the metals and metalloids because of their major importance as environmental pollutants.

Research paper thumbnail of Dermal exposure: The missing link

Occupational Health and Industrial Medicine, 1998

Research paper thumbnail of Biogeochemistry of phosphorus - Its role in ecosystem development. A preliminary statement on some possible research topics relevant to Surtsey and Iceland

Research paper thumbnail of Characterization of surface processes on mineral surfaces in aqueous solutions. Annual report for fiscal year 1993

Research paper thumbnail of Development of a simulation system for a continuous flow, quiescent, aqueous environment

Water Research, Apr 1, 2000

Research paper thumbnail of Adsorption and transformation of trace element species at sulfide/water interfaces

Applied Geochemistry, 1988

Research paper thumbnail of Hybrid coagulation–nanofiltration membrane for removal of bromate and humic acid in water

Journal of Membrane Science, Dec 1, 2010

Research paper thumbnail of Comparison of Submerged Membrane Bioreactor in Different SRT Conditions

Water Practice and Technology, 2006

Complete sludge retention MBR appears to be an innovative technology which no sludge will be prod... more Complete sludge retention MBR appears to be an innovative technology which no sludge will be produced, hence eliminating the sludge disposal cost. However, the understanding of microbial behaviour in the complete sludge retention MBR was still not adequately established. This study was conducted to investigate the biological performances and microbial behaviour of three different SRT MBRs (5 days SRT, 10 days SRT and prolonged SRT). The results revealed that membrane filtration assisted for maintaining the high degree of organic removal (above 97%) for all MBRs. High organic degradation was noticed in the prolonged SRT MBR (89.44%) compared with 5 days SRT (77.64%) and 10 days SRT (85.62%) MBRs. This showed that the prolonged SRT MBR posed a greater capability for further degradation of inert organics and SMP. Extremely low sludge yield (0.0388 g VSS/g COD) was occurred in the prolonged SRT condition compared with 5 and 10 days SRT conditions. The low SOUR did not affect the degrada...

Research paper thumbnail of Adsorption of UVI and Citric Acid on Goethite, Gibbsite, and Kaolinite: Comparing Results for Binary and Ternary Systems

Adsorption of Metals by Geomedia, 1998

... These observations lead to some hypotheses concerning the interactions be-tween a multidentat... more ... These observations lead to some hypotheses concerning the interactions be-tween a multidentate organic ligand ... molecule, the orientation of citrate on a nonhomogeneous surface (ie, with multiple crystal faces ... The effect of citrate on adsorption of UO|+ to goethite would be con ...

Research paper thumbnail of Subsurface injection of RO-treated waste water at a reclaimed land site

Proceedings of the 4th International Symposium on Environmental Hydraulics & 14th Congress of Asia and Pacific Division, International Association of Hydraulic Engineering and Research, 15-18 December 2004, Hong Kong, 2004

Research paper thumbnail of Impact of prolonged sludge retention time on the performance of a submerged membrane bioreactor

Desalination, Apr 1, 2007

Research paper thumbnail of Palladium−Indium Catalyzed Reduction of <i>N</i>-Nitrosodimethylamine: Indium as a Promoter Metal

Environmental Science & Technology, Mar 19, 2008

Log In