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Title: | Assessment of the optimal operating conditions for pale lager clarification using novel ceramic hollow-fiber membranes | Authors: | Cimini, Alessio Moresi, Mauro |
Journal: | JOURNAL OF FOOD ENGINEERING | Issue Date: | 2016 | Abstract: | In this work, the lager beer clarification and stabilization process previously developed was further tested by replacing the 0.8-μm ceramic single-tube membrane module with a novel ceramic hollow-fiber membrane module having the same pore size to offset the known ineffectiveness of back-flushing cleaning techniques in ceramic multi-channel monolithic modules. In total recycle crossflow microfiltration (CFMF) trials, the quasi-steady state permeation flux (Jss) tended to a limiting flux (J∗), that was found to increased with the crossflow velocity (vS) in the range of 0.5-6.0 m s-1. The ideal hydraulic pump energy consumption per unit liter of permeate recovered was practically independent of the aforementioned operating variables and of the order of (66.5 ± 0.5) W h L-1. Nevertheless, to obtain a quasi-state state permeation flux greater than the target permeation flux (i.e., 100 L m-2 h-1) for rough beer clarification via membrane processing in the absence of CO2 backpulsing, TMP had to be greater than 2 bar and vS to vary from 4 to 6 m s-1. Not only was the performance of the ceramic hollow-fiber membrane module at 10 °C, vS = 2.5 m s-1, and TMP = 2.4 bar with 2-min periods of CO2 back-flushing applied every 50-60 min superior to that of the polymeric hollow-fiber membrane process patented by Heineken and Norit Membrane Technology, but also the use of ceramic hollow-fiber membrane systems would extend the membrane life span up to ten years, this reducing the contribution of the annual membrane replacement to the overall operating costs of beer clarification. |
URI: | http://hdl.handle.net/2067/47642 | ISSN: | 0260-8774 | DOI: | 10.1016/j.jfoodeng.2015.11.003 | Rights: | Attribution-NonCommercial-ShareAlike 4.0 International |
Appears in Collections: | A1. Articolo in rivista |
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APPROVED - JFE-hollow-fiber-opt -Sept9th.doc | 1.93 MB | Microsoft Word | View/Open |
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