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Home / Journal of Nanoscience and Nanotechnology, Volume 20, Number 9

Enhanced Selective Removal of Cd(II) by an Amino-Functional Water-Retaining Agent Incorporating Nano Hydrous Manganese Oxide

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An amino-functionalized water-retaining agent (PPM40-NH2) and a water-retaining agent lacking functionalization (PPM40) were prepared to investigate their selective Cd(II) removal properties. The affinity for Cd(II) was increased after introducing the amino functional group. The SFCd/Ca of PPM40-NH2 was 3–7 fold higher than that of PPM40 although the C Ca was 100–1000 times higher than that of C Cd. The chelating effect of –COOH and –NH2 in PPM40-NH2 corresponded well with the selective adsorption of Cd(II), as confirmed by simulations. A seed germination experiment demonstrated that PPM40-NH2 could act as a filter of heavy metals to supply “clean” water for the roots of the pakchoi plant. The leaching experiment indicated that PPM40-NH2 is an efficient in situ fixation agent for the remediation of agricultural soil contaminated with Cd(II) in the presence of high concentrations of Ca(II) salts.

Keywords: Amino; Cadmium; Selectivity; Soil Remediation; Water-Retaining Agent

Document Type: Research Article

Affiliations: Department of Environmental Science and Engineering, Hunan Agricultural University, Changsha, 410128, China; Hunan Engineering and Technology Research Center for Irrigation Water Purification, Changsha, 410128, China

Publication date: 01 September 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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