The recovery of potassium from seawater and brines using dipicrylamine

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dc.contributor.advisorPaddon, Brian D Aen_ZA
dc.contributor.authorVenn, John Garretten_ZA
dc.date.accessioned2016-09-25T16:49:18Z
dc.date.available2016-09-25T16:49:18Z
dc.date.issued1985en_ZA
dc.description.abstractThis thesis gives a literature survey of the physical and chemical properties of dipicrylamine (2,4,6,2',4',6' hexanitrodiphenylamine), its synthesis and analysis, and its use in a process for the recovery of potassium from seawater and brines. Where data is not available in the literature it is obtained by experiment. The published and experimental data are used for the design of a process using dipicrylamine for the recovery of potassium and an analysis of its economic viability. Four process steps are identified and examined. These are (i) the precipitation of the potassium salt of dipicrylamine (KDPA) from seawater or brines, (ii) the recovery of dipicrylamine from the spent seawater or brine, (iii) the conversion of KDPA to produce a potassium salt and the insoluble hydrogen form of dipicrylamine (HDPA) by reaction with an acid and (iv) the conversion of HDPA to a soluble form for recycling and reuse. It is concluded that the recovery of potassium from seawater and brines is technically viable. While the brine process is economically viable at present, the large flowrates found in process step (ii) limit the viability of the seawater process.en_ZA
dc.identifier.apacitationVenn, J. G. (1985). <i>The recovery of potassium from seawater and brines using dipicrylamine</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering. Retrieved from http://hdl.handle.net/11427/21920en_ZA
dc.identifier.chicagocitationVenn, John Garrett. <i>"The recovery of potassium from seawater and brines using dipicrylamine."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 1985. http://hdl.handle.net/11427/21920en_ZA
dc.identifier.citationVenn, J. 1985. The recovery of potassium from seawater and brines using dipicrylamine. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Venn, John Garrett AB - This thesis gives a literature survey of the physical and chemical properties of dipicrylamine (2,4,6,2',4',6' hexanitrodiphenylamine), its synthesis and analysis, and its use in a process for the recovery of potassium from seawater and brines. Where data is not available in the literature it is obtained by experiment. The published and experimental data are used for the design of a process using dipicrylamine for the recovery of potassium and an analysis of its economic viability. Four process steps are identified and examined. These are (i) the precipitation of the potassium salt of dipicrylamine (KDPA) from seawater or brines, (ii) the recovery of dipicrylamine from the spent seawater or brine, (iii) the conversion of KDPA to produce a potassium salt and the insoluble hydrogen form of dipicrylamine (HDPA) by reaction with an acid and (iv) the conversion of HDPA to a soluble form for recycling and reuse. It is concluded that the recovery of potassium from seawater and brines is technically viable. While the brine process is economically viable at present, the large flowrates found in process step (ii) limit the viability of the seawater process. DA - 1985 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1985 T1 - The recovery of potassium from seawater and brines using dipicrylamine TI - The recovery of potassium from seawater and brines using dipicrylamine UR - http://hdl.handle.net/11427/21920 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/21920
dc.identifier.vancouvercitationVenn JG. The recovery of potassium from seawater and brines using dipicrylamine. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 1985 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/21920en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Chemical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherChemical Engineeringen_ZA
dc.titleThe recovery of potassium from seawater and brines using dipicrylamineen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Eng)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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