Environmental engineering particles

Environmental Engineering Small-Particle Physics (especially... 

Characklis, G.W., Wiesner, M.R. (1997) Particles, metals, and water quality in runoff from large urban watershed. Journal of Environmental Engineering -ASCE, 123(8) 753-759. 

Viruses excreted by humans may become a major public health hazard. For example, studies have shown that some 10,000 to 100,000 infectious particles of viruses are emitted per gram of feces from people infected with hepatitis. Viruses producing diseases in humans are excreted in feces, so it is the responsibility of the environmental engineer to ensure that viruses in wastewater treatment plants are effectively disinfected. This is usually done by chlorination followed by proper disposal of the effluent. 

Rubio, J. and H. Hoberg (1993). Process of separation of fine mineral particles by flotation with hydrophobic polymeric carrier. Int. J. Mineral Process. 37, 1-2, 109-122. Sincero, A. P. and G. A. Sincere (1996). Environmental Engineering A Design Approach. Prentice Hall, Upper Saddle River, NJ. 

Minutolo, P, D Anna, A., Commodo, M., PagUara, R., Toniato, G., and Accordini, C. "Emission of Ultrafine Particles from Natural Gas Domestic Burners." Environmental Engineering Science December 2008. 

Reddy KR, Karri MR. (2007). Electrokinetic delivery of nanoscale iron particles for in-situ remediation of pentachlorophenol-contaminated soils. Proceedings of International Symposium on Geo-Environmental Engineering for Sustainable Development (eds. BP Han, LM Hu, HH Liu, XQ Zhu), October 22-24,2007, Xuzhou, China, pp. 74—79. 

Molecular and aerosol particle diameters, copyright P.C. Reist. Molecular diameters calculated from viscosity data. From Altwicker, E.R. et al.. Air pollution, in Environmental Engineers Handbook, 2nd ed., Liu, D.H.F. and Liptak, B.G., Eds., CRC Press, Boca Raton, FL, 1997, p. 334. Originally adapted from Lapple, 1961, Stanford Research Institute Journal, 3rd quarter, and J.S. Eckert and R.F. Strigle, Jr., 1974, JAPCA, 24 961-965. 

Nanoparticles are generally defined as particles with diameters ranging from 1 to 100 nm. Recently, synthesis methods for nanoparticles have been rapidly developed. Nanoparticles are expected to find applications in various fields, i. e., biology, electronics, optics, informatics, and environmental engineering, as tags for biomolecules, quantum transistors, LEDs, super mass storage media, and... 

Dr. Shchukin s principal research interests are physical-chemical mechanics of disperse systems and materials, colloid and interface science, surfactant effects at various interfaces, stability of disperse systems, particles interactions and structure formation, materials science and engineering, physical chemistry of solid state, stability and damageability of solids and their surfaces in active media, control and applications in technology and environmental engineering. 

Three research-based environmental nanotechnology modules have been designed and implemented in an undeigraduate level environmental engineering course. For these modules, we selected two nanomaterials (nanoscale bimetalhc iron particles and engineered nanospheres) that may provide solutions to challenging enviromnental pollution problems (3). Table I shows a summary of each module and its learning objective(s). 

Size-dependent toxicity of silica nano-particles to Chlorella kessleri. Journal of Environmental Science and Health. Part A, Toxic/Hazardous Substances Environmental Engineering, 43(10), 1157-73. 

Particle Transport. Because many organic chemicals bind with aquatic particulate matter, particle transport can determine the fate of compounds. Sediment transport has been of interest to the engineering profession for many years. Many discussions of the dynamics of fluvial sediment transport have appeared in the literature (11, 12). As with hydrodynamic transport, one strategy for environmental modeling is to "piggy-back the transport of sorbed chemicals on a model of transport of the sediment phase. 

EPA. 1988d. Integrated approach to the characterization of particle and organic emissions from unvented kerosene space heaters. Research Triangle Park, NC U.S. Environmental Protection Agency, Office of Research and Development, Air and Energy Engineering Research Laboratory. EPA report no. EPA/600/D-88-251. 

Another important technology in the national security and homeland defense arena is ion trap secondary ion mass spectrometry. Many chemical warfare agents are not volatile and tend to condense on particle surfaces. Research at Idaho National Engineering and Environmental Laboratories has used this technology to analyze mustard agent on the surface of soil particles down to a surface coverage of 0.07 monolayers. 

Gottschalk, F., Scholz, R.W. and Nowack, B. (2010) Probabilistic material flow modeling for assessing the environmental exposure to compounds methodology and an application to engineered nano- 2 particles. Environ. Model. Software, 25, 320-332. 

Atmospheric aerosols are complex mixtures of particles derived from diverse sources. Soot from diesel engines, fly ash from coal combustion, and sulfates, nitrates, and organic compounds produced by atmospheric reactions of gaseous pollutants all contribute to the aerosol. Particle size and composition depend upon the conditions of aerosol formation and growth and determine the effects of atmospheric aerosols on human health, ecosystems, materials degradation, and visibility. Much of the research on environmental aerosols has focused on fine particles ranging from a few micrometers in... 

Whitby, K.T. and Cantrell, B. (1976) Fine particles. In International Conference on Environmental Sensing and Assessment. Institute of Electrical and Electronic Engineers, Las Vegas. 

Richard A. Williams, Institute of Particle Science and Engineering, School of Process, Environmental and Materials Engineering, University of Leeds, Leeds LS2 9JT, UK... 

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