Biodegradable metal adsorbent synthesized by graft polymerization onto nonwoven cotton fabric

Sekine, Ayako*; Seko, Noriaki; Tamada, Masao; Suzuki, Yoshio*

Radiation Physics and Chemistry, 79(1), p.16 - 21, 2010/01

https://doi.org/10.1016/j.radphyschem.2009.08.007

A fibrous adsorbent for Hg ions was synthesized by radiation-induced emulsion graft polymerization of glycidyl methacrylate (GMA) onto a nonwoven cotton fabric and subsequent chemical modification. The optimal pre-irradiation dose for initiation of the graft polymerization of GMA, which minimized the effects of radiation damage on the mechanical strength of the nonwoven cotton fabric, was found to be 10 kGy. The GMA-grafted nonwoven cotton fabric was subsequently modified with ethylenediamine (EDA) or diethylenetriamine (DETA) to obtain a Hg adsorbent. The resulting amine-type adsorbents were evaluated for batch and continuous adsorption of Hg. In batch adsorption, the distribution coefficients of Hg reached 1.910 and 1.010 for EDA- and DETA-type adsorbents, respectively. A column packed with EDA-type adsorbent removed Hg from 1.8 ppm Hg solution at a space velocity of 100 h, which corresponds to 16,000 times the volume of the packed adsorbent.

The H-Invitational Database (H-InvDB); A Comprehensive annotation resource for human genes and transcripts

Yamasaki, Chisato*; Murakami, Katsuhiko*; Fujii, Yasuyuki*; Sato, Yoshiharu*; Harada, Erimi*; Takeda, Junichi*; Taniya, Takayuki*; Sakate, Ryuichi*; Kikugawa, Shingo*; Shimada, Makoto*; et al.

Nucleic Acids Research, 36(Database), p.D793 - D799, 2008/01

https://doi.org/10.1093/nar/gkm999

Here we report the new features and improvements in our latest release of the H-Invitational Database, a comprehensive annotation resource for human genes and transcripts. H-InvDB, originally developed as an integrated database of the human transcriptome based on extensive annotation of large sets of fulllength cDNA (FLcDNA) clones, now provides annotation for 120 558 human mRNAs extracted from the International Nucleotide Sequence Databases (INSD), in addition to 54 978 human FLcDNAs, in the latest release H-InvDB. We mapped those human transcripts onto the human genome sequences (NCBI build 36.1) and determined 34 699 human gene clusters, which could define 34 057 protein-coding and 642 non-protein-coding loci; 858 transcribed loci overlapped with predicted pseudogenes.

Residual stresses and aging degradation of stainless steel weld overlay clading for nuclear reactor pressure vessel (Contract research)

Nishiyama, Yutaka; Onizawa, Kunio; Idei, Yoshio; Suzuki, Masahide

JAERI-Research 2000-047, 32 Pages, 2000/10

JAERI-Research-2000-047.pdf:1.69MB

no abstracts in English

Study of through-thickness attenuation of irradiation embrittlement using JPDR pressure vessel

Suzuki, Masahide;

JAERI-Research 94-038, 23 Pages, 1994/11

JAERI-Research-94-038.pdf:0.87MB

no abstracts in English

Preparation of biodegradable adsorbent recovering metal ions

Sekine, Ayako*; Seko, Noriaki; Suzuki, Yoshio*; Tamada, Masao

no journal, , 

no abstracts in English

Mercury adsorbent synthesized by graft polymerization onto cellulose nonwoven materials

Sekine, Ayako*; Suzuki, Yoshio*; Seko, Noriaki; Tamada, Masao

no journal, , 

Glycidyl methacrylate was grafted on cellulose nonwoven materials in its emulsion state. Amine-type adsorbents for mercury removal were synthesized by reacting the obtained GMA-grafted cellulose with ethylenediamine (EDA) and diethylenetriamine (DETA). The amounts of the amine contents were 2.9 mol/kg-adsorbent for EDA type and 2.8 mol/kg-adsorbent for DETA type respectively. The adsorbents were put in the mercury solution of 100 ppb to evaluate the adsorption selectivity. The adsorption performance was highest at pH3 and the distribution coefficient in pH3 became 1.910 for EDA type and 2.310 for DETA type, respectively.