https://scholars.lib.ntu.edu.tw/handle/123456789/407789
Title: | Energy requirement of suspension dewatering | Authors: | Chu C.P. Lee D.J. Chang C.Y. |
Keywords: | Bond strength;Centrifugation;Coagulation;Consolidation;Friction | Issue Date: | 2005 | Journal Volume: | 40 | Journal Issue: | 9 | Start page/Pages: | 1855-1869 | Source: | Separation Science and Technology | Abstract: | This work estimated the energy required to dewater a clay suspension, considering the total energy input received by the suspension from the dewatering device, the bond strength between adjacent water and solid surface, and the intra-cake friction loss. The centrifugal dewatering and consolidation dewatering were the testing means, and a UK ball clay suspension coagulated with alum was the testing sample. At the initial stage of centrifugal dewatering, most energy input was used to overcome process irreversibilities other than intra-cake friction, giving low-energy efficiency. To rotate faster or to flocculate at optimal dose needed more energy to dewater. On consolidation, most input energy was consumed to break down the bond strength to a critical residual water content, beyond which the friction loss became dominant. The methods presented herein provided a quantitative index to evaluate the efficiency of real dewatering process from an "ideal" dewatering system. Copyright ? Taylor & Francis, Inc. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407789 | ISSN: | 01496395 | DOI: | 10.1081/SS-200064602 | SDG/Keyword: | [SDGs]SDG7 Centrifugation; Chemical bonds; Coagulation; Energy management; Flocculation; Friction; Suspensions (fluids); Bond strength; Dewatering devices; Energy requirements; Friction loss; Dewatering; energy |
Appears in Collections: | 化學工程學系 |
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