Advances in Nanotechnology and the Environment by Juyoung Kim

By Juyoung Kim

''Nanoparticles and nano-sized fabrics created by way of nanotechnology (NT) were thought of particular and sole way to conquer the constraints of alternative applied sciences and widen their purposes. even though those fabrics were standard in environmental expertise (ET), such a lot of environmental functions of nanoparticles have been constrained to the fabrication of nano-sensors for the detection of unstable organic

This booklet offers the potential purposes of nano-sized fabrics in all environmental techniques, supplying the main trustworthy instruction 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 effect and impression of nanomaterials at the atmosphere and discusses the way to stay away from inflicting secondary illness by way of nanomaterials. The e-book presents right information regarding nanomaterials for strength clients who will use and follow nanomaterials in ET.''--Publisher's description. Read more...

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For the synthesis of UAA chains, DMPA molecules were reacted with isocyanate compounds to introduce hydrophilic carboxylic groups to hydrophobic PTMG-based backbone, which makes urethane acrylate chains water-dispersible and form nanoparticles in water. As the molar ratio of DMPA to PTMG increases in the synthesis of UAA chains, the hydrophilicity of UAA chains increases, resulting in the formation of smaller ACP nanoparticles in aqueous phase. So, ACP 64 nanoparticles based on UAA 64 chains, which are synthesized at the highest molar ratio of PTMG/DMPA, have the highest hydrophobicity, resulting in the highest solubilization performance among ACP nanoparticles.

26(2), 2324–2329. [54] Kim, J. , Shuler, M. , and Lion, L. W. (2000) Use of amphiphilic polymer particles for in-situ extraction of sorbed phenanthrene from a contaminated aquifer material, Environ. Sci. , 34, 4133–4139. kr In the previous chapter, extraction of sorbed phenanthrene from aquifer materials using anionic amphiphilic cross-linked polymer (ACP) nanoparticles having the same microstructure of anionic surfactant micelles was presented. 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.

However, SDS solution (200 mg/L) extracted only 7% of the phenanthrene from soil column after eight pore volumes of washing. At higher concentration (10,000 mg/L) (Fig. 11), ACP 64 and 55 nanoparticle solutions also exhibited better in situ extraction performance compared to SDS solution. 11 Extraction of sorbed phenanthrene from soil column using ACP nanoparticle and SDS solutions at high flow rate: -ACP64, -- ACP 55, and -▼-SDS. Reprinted with permission from Ref. [48]. ACP 64 nanoparticles could extract 97% of adsorbed phenanthrene from soil column, whereas SDS solution removed only 20% of adsorbed phenanthrene with the same number of washings.

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