Improving Fly Ash Whiteness and the Influence of Modified Fly Ash on the Physical Strength of Paper
In order to improve the whiteness of fly ash, the particles were coated by in-situ precipitation of calcium carbonate. After different mass ratios of calcium oxide to fly ash were mixed into water, a certain amount of carbon dioxide was bubbled into the mixture to form a precipitated calcium carbona...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
North Carolina State University
2015-09-01
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| Series: | BioResources |
| Subjects: | |
| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_7434_Fan_Fly_Ash_Whiteness |
| _version_ | 1811338714487455744 |
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| author | Huiming Fan Shuo Wang Jianan Liu Jun Long |
| author_facet | Huiming Fan Shuo Wang Jianan Liu Jun Long |
| author_sort | Huiming Fan |
| collection | DOAJ |
| description | In order to improve the whiteness of fly ash, the particles were coated by in-situ precipitation of calcium carbonate. After different mass ratios of calcium oxide to fly ash were mixed into water, a certain amount of carbon dioxide was bubbled into the mixture to form a precipitated calcium carbonate deposit on the surface of fly ash. With the help of scanning electron microscopy (SEM), the process and the coating mechanism of the unmodified and modified fly ash were studied. The results showed that when a 1:1 mass ratio of calcium oxide to fly ash was implemented, the whiteness of fly ash was increased from 30.3 (the original fly ash) to 74.0 (the modified fly ash). After appropriately controlling for the rate of carbon dioxide, the whiteness was improved to meet the standard for filler in the papermaking industry, and also great advantages in paper physical strength were demonstrated. |
| first_indexed | 2024-04-13T18:15:12Z |
| format | Article |
| id | doaj.art-82a9b210a3304443895e1de7c9d67c46 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 1930-2126 |
| language | English |
| last_indexed | 2024-04-13T18:15:12Z |
| publishDate | 2015-09-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-82a9b210a3304443895e1de7c9d67c462022-12-22T02:35:42ZengNorth Carolina State UniversityBioResources1930-21261930-21262015-09-011047434744110.15376/biores.10.4.7434-7441Improving Fly Ash Whiteness and the Influence of Modified Fly Ash on the Physical Strength of PaperHuiming Fan0Shuo Wang1Jianan Liu2Jun Long3State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 510640, Guangzhou, China; China State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 510640, Guangzhou, China; China State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 510640, Guangzhou, China; China State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 510640, Guangzhou, China; China In order to improve the whiteness of fly ash, the particles were coated by in-situ precipitation of calcium carbonate. After different mass ratios of calcium oxide to fly ash were mixed into water, a certain amount of carbon dioxide was bubbled into the mixture to form a precipitated calcium carbonate deposit on the surface of fly ash. With the help of scanning electron microscopy (SEM), the process and the coating mechanism of the unmodified and modified fly ash were studied. The results showed that when a 1:1 mass ratio of calcium oxide to fly ash was implemented, the whiteness of fly ash was increased from 30.3 (the original fly ash) to 74.0 (the modified fly ash). After appropriately controlling for the rate of carbon dioxide, the whiteness was improved to meet the standard for filler in the papermaking industry, and also great advantages in paper physical strength were demonstrated.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_7434_Fan_Fly_Ash_WhitenessFly ashCoatingPrecipitated calcium carbonatePhysical strengthWhiteness |
| spellingShingle | Huiming Fan Shuo Wang Jianan Liu Jun Long Improving Fly Ash Whiteness and the Influence of Modified Fly Ash on the Physical Strength of Paper BioResources Fly ash Coating Precipitated calcium carbonate Physical strength Whiteness |
| title | Improving Fly Ash Whiteness and the Influence of Modified Fly Ash on the Physical Strength of Paper |
| title_full | Improving Fly Ash Whiteness and the Influence of Modified Fly Ash on the Physical Strength of Paper |
| title_fullStr | Improving Fly Ash Whiteness and the Influence of Modified Fly Ash on the Physical Strength of Paper |
| title_full_unstemmed | Improving Fly Ash Whiteness and the Influence of Modified Fly Ash on the Physical Strength of Paper |
| title_short | Improving Fly Ash Whiteness and the Influence of Modified Fly Ash on the Physical Strength of Paper |
| title_sort | improving fly ash whiteness and the influence of modified fly ash on the physical strength of paper |
| topic | Fly ash Coating Precipitated calcium carbonate Physical strength Whiteness |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_7434_Fan_Fly_Ash_Whiteness |
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