Chu C.P.Lee D.J.Chang C.Y.2019-05-132019-05-13200501496395https://scholars.lib.ntu.edu.tw/handle/123456789/407789This 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.Bond strengthCentrifugationCoagulationConsolidationFriction[SDGs]SDG7Centrifugation; Chemical bonds; Coagulation; Energy management; Flocculation; Friction; Suspensions (fluids); Bond strength; Dewatering devices; Energy requirements; Friction loss; Dewatering; energyjournal article10.1081/SS-2000646022-s2.0-22944442930https://www.scopus.com/inward/record.uri?eid=2-s2.0-22944442930&doi=10.1081%2fSS-200064602&partnerID=40&md5=74fbb655bd8ac6c16e76a1e8e037377c