A fundamental characteristic on photochemical adsorption of carbon dioxide to calcium hydroxide

Author

Ai, Deng-Ren ; Ohyama, R.

Author_Institution

Dept. of Electr. Eng., Tokai Univ., Kanagawa, Japan

fYear

2005

fDate

16-19 Oct. 2005

Firstpage

685

Lastpage

688

Abstract

In photochemical treatments for carbon dioxide (CO₂) recovery, a suitable photolytic material and a photon device have been required. In this work, a photochemical reaction for CO₂ adsorption to calcium hydroxide (Ca(OH)₂) is experimentally investigated. The photon device is evaluated by the photochemical effect of vacuum ultraviolet irradiation from a Xe discharge lamp. The experiment is conducted in following procedures: (1) the generation of OH and H radicals and the conversion to calcium oxide (CaO) from moisturized Ca(OH)₂ powder activated by ultraviolet irradiation, (2) the conversion of CO₂ to other molecules such as HCO₃ and H₂CO₃ with generated OH and H radicals, and (3) the final conversion of CaO with generated HCO₃ and H₂CO₃ to calcium carbonate (CaCO₃). The CO₂ removal processes and the fundamental characteristic obtained from an experimental approach are presented.

Keywords

air pollution control; calcium compounds; carbon compounds; discharge lamps; hydrogen compounds; photolysis; recovery; ultraviolet radiation effects; xenon; CO₂; CaCO₃; H₂CO₃; Xe; carbon dioxide recovery; discharge lamp; photochemical adsorption; photochemical treatment; photolytic material; photon device; vacuum ultra-violet irradiation; Calcium; Carbon dioxide; Electrodes; Electron tubes; Glass; Inductors; Lamps; Ocean temperature; Photochemistry; Powders;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2005. CEIDP '05. 2005 Annual Report Conference on

Print_ISBN

0-7803-9257-4

Type

conf

DOI

10.1109/CEIDP.2005.1560775

Filename

1560775