Advances in Nanotechnology and the Environment by Juyoung Kim

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By Juyoung Kim

''Nanoparticles and nano-sized fabrics created via nanotechnology (NT) were thought of certain and sole method to conquer the restrictions of different applied sciences and widen their purposes. even though those fabrics were customary in environmental know-how (ET), so much of environmental functions of nanoparticles have been constrained to the fabrication of nano-sensors for the detection of risky organic

This e-book provides the potential functions of nano-sized fabrics in all environmental procedures, offering the main trustworthy guide for the choice of nanomaterials to enhance the potency of environmental approaches. It specializes in designing particular nanomaterials for environmental strategies and pollution. It provides the influence and effect of nanomaterials at the setting and discusses tips on how to keep away from inflicting secondary illness via nanomaterials. The publication presents right information regarding nanomaterials for strength clients who will use and practice nanomaterials in ET.''--Publisher's description. Read more...

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Reprinted with permission from Ref. [48]. At concentration equal to and less than CMC, surfactant completely dissolves in water, so that SDS aqueous solution consists of monomeric molecules existing as dissolved monomeric molecules. These monomeric molecules are easily sorbed onto the soil because of hydrophobic moiety of surfactant. Consequently, at concentration less than CMC of SDS (2100 mg/L), large amounts of SDS are sorbed onto the aquifer sand. Unlike SDS molecules that completely dissolve in water below its CMC, UAA chains cannot be dissolved in water but are just dispersed in water to form nano-aggregates (ACP nanoparticles) even at extremely low concentrations, because the whole UAA chains are insoluble in water.

ACP nanoparticles were shown to adsorb weakly to a sandy aquifer in batch experiments, which is attributed to the chemically cross-linked nature of their microstructure. In this chapter, soil-washing performance of ACP nanoparticles having different surface property will be presented. Soil-washing performance of a surfactant strongly depends on the degree of sorption onto soil. In general, cationic surfactants having severe biotoxicity show relatively high degree of sorption because of negatively charged soil particles, so that the use of cationic surfactants in soil washing is highly restricted.

38, 1903–1916. [48] Kim, J. , Shim, S. , and Shim, J. -K. (2004) Enhanced desorption of phenanthrene from aquifer sand using amphiphilic polyurethane nanoparticles, J. Ind. Chem. , 10, 1043–1051. [49] Yeom, I. , Ghosh, M. , and Cox, C. D. (1996) Kinetic aspects of surfactant solubilization of soil-bound polycyclic aromatic hydrocarbons, Environ. Sci. , 30, 1589–1595. [50] Yeom, I. , Ghosh, M. , Cox, C. , and Robinson, K. G. (1995) Micellar solubilization of polycyclic aromatic hydrocarbons in coal tarcontaminated soils, Environ.

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