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Chemical engineering ( sci.engr.chem )
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From [email protected] Wed May  8 17:59:23 1996 Path: uunet!bounce-back From: Joshua Halberthal <[email protected]> Newsgroups: news.announce.newgroups,news.groups,sci.engr.chem,sci.chem,sci.engr.metallurgy,sci.engr.mech,sci.environment,sci.bio.technology Subject: RFD: sci.engr.chem reorganization Followup-To: news.groups Date: 8 May 1996 21:59:13 -0000 Organization: . Lines: 93 Sender: [email protected] Approved: [email protected] Message-ID: <[email protected]> NNTP-Posting-Host: rodan.uu.net Archive-Name: sci.engr.chem.separation Xref: uunet news.announce.newgroups:8635 news.groups:205736 sci.engr.chem:15470 sci.chem:68019 sci.engr.metallurgy:6724 sci.engr.mech:26749 sci.environment:102239 sci.bio.technology:6481                       REQUEST FOR DISCUSSION (RFD)      unmoderated group sci.engr.chem.misc (renames sci.engr.chem)               unmoderated group sci.engr.chem.separation  Newsgroup lines: sci.engr.chem.misc	General topics related to chemical engineering. sci.engr.chem.separation	Separations in the chemical process.  This is a formal Request For Discussion (RFD) for the reorganisation of the Usenet Newsgroup sci.engr.chem. This is not a Call For Votes (CFV); you cannot vote at this time. Procedural details are below.  RATIONALE: sci.engr.chem.misc  Chemical engineering is devided to some 20 unit operations such as evaporation, distillation, extraction, adsorption, mixing, drying and separation. Presently the group sci.engr.chem has no further hierarchies and all articles, queries and replies on such a vast range of subjects are posted to this overburdened group. The creation of new subgroups will enable to logically develop hierarchies within sci.engr.chem.* for a more clear distinction of the various unit operations e.g. sci.engr.chem.separation or sci.engr.chem.extraction.  RATIONALE: sci.engr.chem.separation  Separation is a major unit operation that exists in almost every flowscheme related to the chemical process industries, pharmaceutics, ore beneficiation or water and waste treatment. The present techniques are very diverse and new developments are expanding rapidly so this newsgroups is proposed to provide an unmoderated forum for discussions by plant and design engineers, research personnel and students on all process and mechanical aspects concerning solid-liquid separation.  CHARTER: sci.engr.chem.misc  Discussions on general topics related to chemical engineering.  END CHARTER.  CHARTER: sci.engr.chem.separation  The following topics are proposed for unmoderated discussions:  Separation Methods: * Filtration by vacuum and pressure filters. * Centrifugation by filtering and sedimenting centrifuges. * Sedimentation by conventional, storage and hi-rate thickeners. * Clarification by clarifiers, solids contact and sludge blanket. * Coagulation and flocculation by bridging polymers. * Moisture reduction by wetting agents. * Polishing by precoat filters, pressure and deep-bed filters. * Dissolved air flotation by DAF flotators.  Process and Mechanical: * Layout design. * Mechanical and maintenance considerations.  Research and Piloting: * Particle analysis and the influence on performance. * Defining "Relative Filtration Index" during research on reaction. * Establishing diminishing returns on wash efficiencies and drying. * Selection of filter media. * Evaluating long-term effects on separation rates.  END CHARTER.  PROCEDURE:  This is a request for discussion, not a call for votes. In this phase of the process, any potential problems with the proposed newsgroup should be raised and resolved. The discussion period will continue for a minimum of 21 days (starting from when the first RFD for this proposal is posted to news.announce.newgroups), after which a Call For Votes (CFV) may be posted by a neutral vote taker if the discussion warrants it. Please do not attempt to vote until this happens.  All discussions of this proposal should be posted to news.groups.  This RFD attempts to comply fully with the Usenet newsgroup creation guidelines outlined in "How to Create a New Usenet Newsgroup" and "How to Format and Submit a New Group Proposal". Please refer to these documents (available in news.announce.newgroups) if you have any questions about the process.  DISTRIBUTION:  This RFD has been posted to the following newsgroups:  news.announce.newgroups, news.groups sci.engr.chem, sci.chem, sci.engr.metallurgy, sci.engr.mech, sci.environment, sci.bio.technology  Proponent: Joshua Halberthal <[email protected]> 
 
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