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| Titel: |
Formaldehyde reduction with scallop shell powders fired at high temperatures: Identification of the effective ingredient |
| Auteur: |
Takada, Tomoya Furusaki, Atsushi Tanaka, Yasuaki |
| Verschenen in: |
Bio-medical materials and engineering |
| Paginering: | Jaargang 19 (2009) nr. 2-3 pagina's 187-192 |
| Jaar: |
2009-07-06 |
| Inhoud: |
The volatile organic compound (VOC) reduction activity of scallop shell powders fired at 300, 600 and 900°C was examined using formaldehyde (HCHO). Raw shells as well as fired shells immediately after firing at several temperatures, except for 600°C, were found to gradually remove HCHO from the air. In the case of shell powders stored for 3 months after firing, the HCHO reduction activity of the powder fired at 900°C was obviously improved, with the HCHO concentrations rapidly reaching zero within 20 min. It has been found by X-ray diffraction measurements that shell powder stored for 3 months after firing at 900°C contains a small amount of calcium hydroxide (Ca(OH)2) generated from calcium oxide (CaO). Our results suggest that Ca(OH)2 may be the effective ingredient in the HCHO reduction. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 12 van 22 gevonden artikelen
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