BARUAH , M K

BORAH , G C

KOTOKY , P

IR@NEIST - North East Institute of Science and Technology (CSIR)

  E-mail Article     Add to my Quick Links     Cited By in Scopus (0)   Related Articles in ScienceDirect Login:  Register Home Browse My Settings Alerts Help Quick Search   All fields   Author   Journal/book title   Volume   Issue   Page         Separation and Purification TechnologyVolume 33, Issue 1, September 2003, Pages 57-61 Font Size:   doi:10.1016/S1383-5866(02)00220-4    Copyright © 2003 Elsevier Science B.V. All rights reserved.Dissolution of model coal minerals(gypsum and pyrite) in RuCl3 solution—ademineralisation approachMrinal K. Baruaha, ProbhatKotoky, , b, JyotishBaruahb and Gobin C. Boraba Department of Chemistry,NNS College, Titabar 785630,Assam, Indiab Geoscience Division, Regional Research Laboratory – CSIR,Jorhat 785006, Assam, IndiaReceived 17 June 2002;  revised 13 December 2002;  accepted 16December 2002. ; Available online 30 May 2003.AbstractGypsum accounts for sulfate sulfur and pyrite for pyritic sulfur, areoccurring in coal; dissolution of their model samples were carried outusing RuCl3 solution. The extent of soluble calcium from gypsum at25 °C was 97.67–98.26% in 15–60 min while the extent of solubleiron from pyrite was 0.35–0.65% at 25 °C and 3.90–6.31% at 80 °Cin the same time period. The rate constants for gypsum dissolutionare exceedingly higher (1.12–4.23)10−3 s−1, than those observed forpyrite, (1.58–3.92)10−6 s−1. It is observed that RuCl3 is a suitablereagent for the removal of gypsum by dissolution process. Abstract Article Figures/Tables References  Purchase PDF (173 K)Article ToolboxAn investigation of a thermochemical process for conver...Advances in Environmental ResearchOxidative dissolution of pyritic sludge from the Aznalc...Chemical GeologyGrazing incidence X-ray diffraction study of products f...Geochimica et Cosmochimica ActaIron-sulfide crystals in probe depositsFuel Processing TechnologyThe distribution and origin of trace elements in a UK c...FuelScienceDirect - Separation and Purification Technology : Dissolution of ... http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6THJ-...1 of 2 6/3/2009 3:30 PMView More Related Articles View Record in ScopusAuthor Keywords: Dissolution kinetics; Ruthenium chloride,gypsum, pyrite; DemineralisationArticle Outline1. Introduction2. Theory3. Experimental4. Results and discussion4.1. Solubility of gypsum4.2. Solubility of pyrite4.3. Kinetic study5. ConclusionAcknowledgementsReferencesCorresponding author. Tel.: +91-376-3320353; fax:+91-376-3370011Sponsored LinksFull-Text Online JournalsFull-text journals for academicresearch at Questia Online Library.www.Questia.com/JournalsChurch of ScientologyGrowing at incredible rate. LearnWith Online Videos, Catalog & More!Scientology.org Home Browse My Settings Alerts HelpAbout ScienceDirect  |  Contact Us  |  Information for Advertisers  |  Terms & Conditions  |  Privacy PolicyCopyright © 2009 Elsevier B.V. All rights reserved. ScienceDirect® is a registered trademark of Elsevier B.V.Separation and Purification TechnologyVolume 33, Issue 1, September 2003, Pages 57-61ScienceDirect - Separation and Purification Technology : Dissolution of ... http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6THJ-...2 of 2 6/3/2009 3:30 PM

Dissolution of model coal minerals (gypsum and pyrite) in RuCl3 solution - a demineralization approach

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Dissolution of model coal minerals (gypsum and pyrite) in RuCl3 solution - a demineralization approach

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IR@NEIST - North East Institute of Science and Technology (CSIR)