The preparation of pellets by the compaction of an aluminosilicate-based adsorbent from electronic waste
Autor: | Gordon McKay, S.L. Rough, Alireza Bazargan, Pejman Hadi |
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Rok vydání: | 2016 |
Předmět: |
021110 strategic
defence & security studies Materials science Waste management Process Chemistry and Technology digestive oral and skin physiology Metallurgy 0211 other engineering and technologies Compaction Pellets 02 engineering and technology 010501 environmental sciences Pelletizing 01 natural sciences Pollution chemistry.chemical_compound Calcium carbonate Adsorption chemistry Aluminosilicate Pellet Chemical Engineering (miscellaneous) Waste Management and Disposal Water content 0105 earth and related environmental sciences |
Zdroj: | Journal of Environmental Chemical Engineering. 4:2322-2326 |
ISSN: | 2213-3437 |
DOI: | 10.1016/j.jece.2016.03.047 |
Popis: | Pelletization is an important part of the commercialization of adsorbents. Two factors must be considered in determining the pelletization conditions, namely mechanical strength of the pellets and their water resistance in aqueous environments. The primary objective of this study was the preparation of pellets from an aluminosilicate-based adsorbent for industrial fixed-bed adsorption columns. The pellet formation conditions, including binder type and content, water content, and compaction pressure, were optimized. Calcium carbonate was demonstrated to be the most promising binder for the aluminosilicate material. The experiments showed that with a water content of 30% and final applied compaction pressure of 80 MPa, the amount of binder required for pelletization can be as low as 2.5 wt%. Although higher compaction pressures produced pellets with higher mechanical strength, there exists a trade-off between the mechanical strength and the cost of the compaction process. Overall, the compaction process was successful at producing pellets with ample mechanical strength (as high as 800 kN/m 2 ) and satisfactory water resistance (pellet integrity not affected by immersion). |
Databáze: | OpenAIRE |
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