By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Excitatory Amino Acids are presented in a new report. According to news reporting out of Jiangsu, People's Republic of China, by NewsRx editors, research stated, "In this study, poly(gamma-glutamic acid)-coated Fe3O4 magnetic nanoparticles (gamma-PGA/Fe3O4 MNPs) were successfully fabricated using the co-precipitation method. Fe3O4 MNPs were also prepared for comparison."
Our news journalists obtained a quote from the research from the Nanjing University of Technology, "The average size and specific surface area results reveal that gamma-PGA/Fe3O4 MNPs (52.4 nm, 88.41 m(2). g(-1)) have smaller particle size and larger specific surface area than Fe3O4 MNPs (62.0 nm, 76.83 m(2). g(-1)). The gamma-PGA/Fe3O4 MNPs can remove over 99% of Cr3+, Cu2+ and Pb2+, and over 77% of Ni2+ in deionized water, much higher than.-PGA and Fe3O4 MNPs, attributed to the larger specific surface area of gamma-PGA/Fe3O4 MNPs. With the solution pH higher than 6.0, gamma-PGA/Fe3O4 MNPs demonstrate better removal activity. The adsorption isotherm of gamma-PGA/Fe3O4 MNPs for Cr3+ fits the Freundlich model well, with the adsorption capacity of 24.60 m(2). g(-1). gamma-PGA/Fe3O4 MNPs are strongly attracted by permanent magnet, so it is easy to separate them completely from water."
According to the news editors, the research concluded: "With their high efficiency for heavy metal removal and easier separation, gamma-PGA/Fe3O4 MNPs have great potential applications in water treatment."
For more information on this research see: Fabrication of Poly(gamma-glutamic acid)-coated Fe3O4 Magnetic Nanoparticles and Their Application in Heavy Metal Removal. Chinese Journal of Chemical Engineering, 2013;21(11):1244-1250. Chinese Journal of Chemical Engineering can be contacted at: Chemical Industry Press, No. 3 Huixinli Chaoyangqu, Beijing 100029, Peoples R China. (Elsevier - www.elsevier.com; Chinese Journal of Chemical Engineering - www.elsevier.com/wps/product/cws_home/707628)
Our news journalists report that additional information may be obtained by contacting J. Chang, Nanjing Univ Technol, Jiangsu Key Lab Ind Water Conservat & Emiss Reduc, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, People's Republic of China. Additional authors for this research include Z.X. Zhong, H. Xu, Z. Yao and R.Z. Chen (see also Excitatory Amino Acids).
Keywords for this news article include: Asia, Jiangsu, Nanoparticle, Glutamic Acid, Nanotechnology, Acidic Amino Acids, Emerging Technologies, Excitatory Amino Acids, Dicarboxylic Amino Acids, People's Republic of China
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