Development of an adsorbent for Cs removal synthesized by radiation-induced graft polymerization

Shibata, Takuya; Seko, Noriaki; Amada, Haruyo; Kasai, Noboru; Saiki, Seiichi; Hoshina, Hiroyuki; Ueki, Yuji

Nihon Ion Kokan Gakkai-Shi, 26(1), p.9 - 14, 2015/01

https://doi.org/10.5182/jaie.26.9

Recovery of scandium from hot spring water with graft adsorbent containing phosphoric groups

Hoshina, Hiroyuki; Kasai, Noboru; Amada, Haruyo; Takahashi, Makikatsu*; Tanaka, Kazuya*; Seko, Noriaki

Nihon Ion Kokan Gakkai-Shi, 25(4), p.248 - 251, 2014/11

https://doi.org/10.5182/jaie.25.248

Absorption of phosphate ion in swine urine using CMC gel

Takigami, Machiko*; Amada, Haruyo*; Nagasawa, Naotsugu; Hiroki, Akihiro; Kasai, Noboru; Yoshii, Fumio; Tamada, Masao

Transactions of the Materials Research Society of Japan, 33(4), p.849 - 852, 2008/12

Shortage of phosphorus becomes a serious problem in the world. The removal of phosphorus in swine urine is a big concern for the environmental conservation. To solve both problems, absorbent to absorb phosphorus in swine urine was developed using carboxymethyl cellulose (CMC) and Iron. The gel formation proceeded instantaneously when CMC and Iron (III) chloride were mixed, while gel was not formed immediately when Iron (II) chloride was used. Oxidation of Iron (II) to Iron (III) occurs gradually in Iron (II) aqueous solution. However, addition of CMC to the Iron (II) solution promoted the oxidation to form gel. The rate of gel formation could be controlled by addition of acid to CMC-Iron (II) mixture. The resultant gel absorbed phosphorus in swine urine. The absorption was about 97% in swine urine containing 78 mg/L of phosphorus.

Preparation and properties of CMC gel

Takigami, Machiko*; Amada, Haruyo*; Nagasawa, Naotsugu; Yagi, Toshiaki; Kasahara, Takamitsu*; Takigami, Shoji*; Tamada, Masao

Transactions of the Materials Research Society of Japan, 32(3), p.713 - 716, 2007/09

Carboxymethylcellulose (CMC) gel was formed by addition of acid to CMC (CMC-acid gel). Gel fraction (weight of insoluble part/initial CMC weight) was calculated after removing uncrosslinked CMC by immersing the CMC-acid gel in water. It increased with acid concentration. Mechanism of CMC-acid gel formation was elucidated by aggregation of CMC molecules as the result of replacement of sodium in carboxyl group with hydrogen. Gels could be prepared by three different procedures; (1) mixing CMC and acid, (2) immersion of CMC or -irradiated CMC pastes in acid, and (3) -irradiation of CMC-acid gel. Gels with different elasticity and hardness were prepared changing degree of substitution of CMC, molar mass of CMC, species of acid, concentrations of acid and CMC, and application of -irradiation.

Novel synthesis of elastic gel from plant-origin and its application

Nagasawa, Naotsugu; Takigami, Machiko*; Amada, Haruyo*; Yagi, Toshiaki; Kasai, Noboru; Yoshii, Fumio; Tamada, Masao

no journal, , 

no abstracts in English

Evaluation of fibrous grafted adsorbents under ferric ions coexistence

Hayashi, Natsuki*; Yamanobe, Takeshi*; Amada, Haruyo; Hoshina, Hiroyuki; Seko, Noriaki

no journal, , 

no abstracts in English

A New eco-fiendly synthesis method for arsenic adsorbent

Amada, Haruyo; Hoshina, Hiroyuki; Seko, Noriaki; Takahashi, Makikatsu*

no journal, , 

no abstracts in English

Boron removal by glucamine chelate adsorbent grafted on polyethylene fabric

Seko, Noriaki; Amada, Haruyo; Hoshina, Hiroyuki; Ikegawa, Atsushi*; Hatanaka, Hiroshi*

no journal, ,