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Anion adsorptive carbon material and its production method and device

A manufacturing method and a technology for manufacturing devices, which are applied in the field of carbon materials for anion adsorption, and can solve the problems of cost increase, expensive anion exchange resin, and a large amount of cost

Inactive Publication Date: 2007-01-03
NISSHOKU CORP TSUYAMA OKAYAMA JP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, fluorine is contained in wastewater from semiconductor, glass, and electroplating factories. The fluorine in factory wastewater is removed by adding calcium compounds to form calcium fluoride. tower, so the cost increases
Moreover, to meet Japan's environmental standard of 0.8mg/L or below 0.8mg/L, expensive special anion exchange resins are required
Other treatment o

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  • Anion adsorptive carbon material and its production method and device
  • Anion adsorptive carbon material and its production method and device
  • Anion adsorptive carbon material and its production method and device

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Abstract

An object of the present invention is to provide a carbon material for anion adsorption that is inexpensive, environmentally friendly, and has excellent anion adsorption properties, a method for producing the same, and a production apparatus thereof. The present invention is characterized in that a solution containing calcium ions is brought into contact with plant raw materials, followed by carbonization, followed by contact with an acid solution.

Description

technical field [0001] The present invention relates to an anion-adsorbing carbon material for adsorbing anions such as nitrate ions and fluoride ions, and a manufacturing method and apparatus thereof. Background technique [0002] Water quality and soil pollution caused by heavy metals, pesticides, and organic chlorides will damage the environment, which is becoming a problem. These harmful substances can be removed by adsorbing materials such as activated carbon and zeolite, but the present situation is that nitrate-type nitrogen or nitrite-type nitrogen, fluorine, arsenic, cyano, etc. exist in the form of anions, which are difficult to treat with adsorbent materials. [0003] That is, nitrate-type nitrogen and nitrite-type nitrogen are contained in fertilizers used in tea fields, golf course lawns, etc., and constitute one of the causes of groundwater pollution, which is currently a serious problem. This is because nitrate ions and nitrite ions have negative charges and ...

Claims

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Application Information

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IPC IPC(8): B01J41/18B01J20/20C01B31/02
Inventor 林聪横山理英
Owner NISSHOKU CORP TSUYAMA OKAYAMA JP