Anion adsorbing carbon material, as well as manufacturing method and manufacturing facilities for same

a technology of carbon materials and anions, applied in the field of anion adsorption carbon materials, can solve the problems of contaminating water quality and soil, destroying the environment, and presently difficult to treat anions in the form of anions with adsorbents,

a technology of carbon materials and anions, applied in the field of anion adsorption carbon materials, can solve the problems of contaminating water quality and soil, destroying the environment, and presently difficult to treat anions in the form of anions with adsorbents,

US20070123420A1Inactive Publication Date: 2007-05-31NISSHOKU CORP TSUYAMA OKAYAMA JP
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  • Anion adsorbing carbon material, as well as manufacturing method and manufacturing facilities for same
  • Anion adsorbing carbon material, as well as manufacturing method and manufacturing facilities for same
  • Anion adsorbing carbon material, as well as manufacturing method and manufacturing facilities for same

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first embodiment

[0106]FIGS. 1 and 2 show this invention.

[0107] In FIGS. 1 and 2, 1 indicates a carbonization furnace (an example of a carbonization apparatus for carbonizing a raw material which comprises plant(s)) for carbonizing a ligneous material (an example of a raw material which comprises plant(s)) 2 of plant(s), for example, natural fibers, including hemp, or lumber, without activating the material. Ligneous chips, for example, are used as the above described material 2. These ligneous chips are gained by processing a conifer, such as Japanese cypress or cedar having high water absorbency and have a size of no greater than, for example, 10 mm.

[0108]3 indicates facilities for acid treatment which contact an acid solution with a carbonized material that has been created by carbonization apparatus 1, and has mixing blades 5 inside a container 4 for containing an acid solution H, for example, HCl and H2SO4. The concentration of this acid solution is, for example, 5 mol / L. Apparatus for acid tr...

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Abstract

This invention provides an anion adsorbing carbon material which is inexpensive, environmentally friendly and excellent in the anion adsorption, as well as a manufacturing method and a manufacturing facilities for the same. This invention is characterized in that a raw material which comprises plant(s) is contacted with a solution including calcium ions, and after that, carbonized, and subsequently, contacted with an acid solution.

Description

TECHNICAL FIELD [0001] This invention relates to an anion adsorption carbon material for adsorbing anions such as nitrate ions and fluoride ions, as well as a manufacturing method and a manufacturing facilities for the same. BACKGROUND ART [0002] Contamination of a water quality and soil by heavy metals, agricultural chemicals and an organochlorine compounds has become a problem in that it destroys the environment. Though these harmful substances can be adsorbed and removed with adsorbents such as activated carbon and a zeolite, it is presently difficult to treat nitrate nitrogen, nitrite nitrogen, fluorine, arsenic and cyan which exist in the form of anions with adsorbents. [0003] That is to say, nitrate nitrogen and nitrite nitrogen are included in fertilizers used in tea fields, turfs for golfing and the like, and have become a factor in ground water contamination, which is presently a large problem. This is because nitrate ions and nitrite ions have negative charge and do not be...

Claims

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Application Information

Patent Timeline
31 May 2007
Publication
US20070123420A1
IPC
C01B31/08; B01J8/00; B01J20/20; B01J41/18; C01B31/02; C02F1/28
CPC
B01J20/3078; C01B31/02; C02F1/283; B01J41/18; B01J20/20; C01B32/05
Inventors
HAYASHI, SATOSHI; YOKOYAMA, RIEI