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- Mio Takeuchi; Yoshishige Kawabe; Eiji Watanabe; Toshio Oiwa; Manabu Takahashi; Kenji Nanba; Yoichi Kamagata; Satoshi Hanada; Yoshihisa Ohko; Takeshi Komai
- Journal of contaminant hydrology 2011 v.124 no.1-4 pp. 14-24
- Dehalococcoides; aquifers; bacteria; carbon; clay; dechlorination; electrons; genes; hydrogen; microbial activity; sand; tetrachloroethylene; vinyl chloride
- ... In order to determine whether natural attenuation of chlorinated ethenes by microbial activity occurs in aquitards, sediments at a site contaminated with tetrachloroethene were vertically studied by drilling. The distribution of microbes (Dehalococcoides group and anaerobic hydrogen producers) and the ability of the sediments to sustain microbial dechlorination were determined in an aquitard as we ...
- David Plackett; Ana Siu; Qingfeng Li; Chao Pan; Jens Oluf Jensen; Søren Fæster Nielsen; Anastasia A. Permyakova; Niels J. Bjerrum
- Journal of membrane science 2011 v.383 no.1-2 pp. 78-87
- X-radiation; ambient temperature; artificial membranes; cations; clay; dimensional stability; electric power; fuel cells; hydrogen; hydrogen bonding; infrared spectroscopy; ion exchange; permeability; phosphoric acid; polymers; relative humidity; salts; tensile strength
- ... Good dispersion of modified laponite clay was achieved in polybenzimidazole (PBI) solutions which, when cast and allowed to dry, resulted in homogeneous and transparent composite membranes containing up to 20wt% clay in the polymer. The clay was organically modified using a series of ammonium and pyridinium salts with varying polarity and hydrogen-bonding capacity. Clay modification by ion-exchang ...