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The cryogenic separation process is an air separation technology which is used to produce specific components of the air in gases or liquid form with high purity. This technology is frequently used in liquified natural gas (LNG) industries, nuclear isotopes separation and cryogenic fuels production for space shuttle. This paper proposes an optimal control design method for a nonlinear model of a cryogenic...
The sustainable development of biorefineries, which use a variety of separation processes to produce bioethanol from various feedstocks is a very interesting topic today. The separation processes used by industries are considered as the most energy consuming steps for bioethanol production. Therefore, a critical review is presented of separation methods such as azotropic distillation, vacuum distillation,...
The aim of the present study was to obtain the water of reuse from domestic sewage provided by Anhumas Sewage Treatment Station, from Campinas, Brazil. The construction building waste was used in decantation of sludge from sewage. The sewage water was filtered in a membrane of microfiltration and used in irrigation. Bean seeds are used in germination on degraded soils. Ecological cost was measured...
Chromatographic processes provide an effective method for the separation of multicomponent mixtures in which the components have different adsorption affinities. As an alternative to conventional discontinuous batch chromatography process, the simulated moving bed (SMB) chromatographic separation process is a continuous process and has gained more and more application in such fields as petrochemicals,...
Thermodynamics provides a value system and rules for evaluating separation and recycling systems. After a brief development to calculate the minimum work required to separate an ideal mixture, we review what thermodynamics has to say about four questions: 1) What gets recycled? 2) What gets lost? 3) What gets saved? and 4) How can we improve the system.
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