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Fumihiko Ogata,Daisuke Imai,Megumu Toda,Masashi Otani,Naohito Kawasaki 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.34 No.-
Nickel hydroxide (Ni) was calcined at 270 and 400 8C (denoted Ni270 and Ni400), and the properties ofNi, Ni270, and Ni400 were investigated. In addition, the phosphate adsorption capabilities of Ni, Ni270,and Ni400 were evaluated by examination of the effects of contact time and solution pH, analysis of anadsorption isotherm, and study of desorption. The amounts of phosphate ion adsorbed by the differentsamples showed the order Ni < Ni400 < Ni270. Finally, phosphate ions adsorbed onto Ni270 could bedesorbed using sodium hydroxide, indicating that Ni270 can be used as a renewable adsorbent.
Fumihiko Ogata,Ayaka Ueda,Shigeharu Tanei,Daisuke Imai,Naohito Kawasaki 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.35 No.-
We investigated the simultaneous removal of phosphate and nitrite ions from aqueous solutions by acombination treatment that used both PG-Ca (poly-g-glutamic acid combined with flocculating agents)and SB600 (soybeans treated with calcium chloride, hydrochloric acid and calcined at 600 8C). Phosphateions and nitrite ions were selectivity adsorbed by PG-Ca and SB600, respectively. The removalmechanism of phosphate ions from aqueous solution was related to the presence of calcium hydroxide(derived from PG-Ca), and that of nitrite ions was related to the presence of chloride ions at the surface ofSB600.
A Planetary Microlensing Event with an Unusually Red Source Star: MOA-2011-BLG-291
Bennett, David P.,Udalski, Andrzej,Bond, Ian A.,Suzuki, Daisuke,Ryu, Yoon-Hyun,Abe, Fumio,Barry, Richard K.,Bhattacharya, Aparna,Donachie, Martin,Fukui, Akihiko,Hirao, Yuki,Kawasaki, Kohei,Kondo, Iona American Astronomical Society 2018 The Astronomical journal Vol.156 No.3