Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/14781
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Al-Hamzah, Ali | en |
dc.contributor.author | Fellows, Chris | en |
dc.date.accessioned | 2014-04-24T09:08:00Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | Desalination, 332(1), p. 33-43 | en |
dc.identifier.issn | 1873-4464 | en |
dc.identifier.issn | 0011-9164 | en |
dc.identifier.uri | https://hdl.handle.net/1959.11/14781 | - |
dc.description.abstract | The thermal decomposition of the hydrogencarbonate ion has been previously described by a bimolecular mechanism or a unimolecular mechanism. In this work the Gibbs free energy of the competing reactions for both the unimolecular and bimolecular mechanisms was calculated for typical concentrations found in thermal desalination plants. Activity coefficients were estimated using the Pitzer equations. At low temperature the bimolecular mechanism is thermodynamically favored, while above 80 °C the unimolecular mechanism is favored, consistent with observations of alkaline scale formation in thermal desalination plants. The rate coefficient of thermal decomposition of HCO₃⁻ at 97.2 °C in the absence and presence of 10 ppm of poly(acrylic acid) (PAA) with different end groups and molar mass was determined. PAA was found to retard the rate of decomposition by up to 49% and for all end groups of PAA the rate coefficient of thermal decomposition of 40 ppm HCO₃⁻ increased with increasing molar mass. The results are consistent with PAA preventing heterogeneous decomposition of HCO₃⁻ on interfaces. The rate of partitioning of PAA to these interfaces should increase with decreasing molar mass and resulting mobility of PAA, and may also be affected by self-assembly behavior. | en |
dc.language | en | en |
dc.publisher | Elsevier BV | en |
dc.relation.ispartof | Desalination | en |
dc.title | Apparent inhibition of thermal decomposition of hydrogencarbonate ion by poly(acrylic acid): The effect of molar mass and end-group functionality | en |
dc.type | Journal Article | en |
dc.identifier.doi | 10.1016/j.desal.2013.10.021 | en |
dc.subject.keywords | Chemical Thermodynamics and Energetics | en |
dc.subject.keywords | Colloid and Surface Chemistry | en |
dc.subject.keywords | Physical Chemistry of Materials | en |
local.contributor.firstname | Ali | en |
local.contributor.firstname | Chris | en |
local.subject.for2008 | 030603 Colloid and Surface Chemistry | en |
local.subject.for2008 | 030602 Chemical Thermodynamics and Energetics | en |
local.subject.for2008 | 030304 Physical Chemistry of Materials | en |
local.subject.seo2008 | 961101 Physical and Chemical Conditions of Water for Urban and Industrial Use | en |
local.profile.school | Chemistry | en |
local.profile.school | School of Science and Technology | en |
local.profile.email | cfellows@une.edu.au | en |
local.output.category | C1 | en |
local.record.place | au | en |
local.record.institution | University of New England | en |
local.identifier.epublicationsrecord | une-20140221-103458 | en |
local.publisher.place | Netherlands | en |
local.format.startpage | 33 | en |
local.format.endpage | 43 | en |
local.identifier.scopusid | 84887559059 | en |
local.peerreviewed | Yes | en |
local.identifier.volume | 332 | en |
local.identifier.issue | 1 | en |
local.title.subtitle | The effect of molar mass and end-group functionality | en |
local.contributor.lastname | Al-Hamzah | en |
local.contributor.lastname | Fellows | en |
dc.identifier.staff | une-id:cfellows | en |
local.profile.orcid | 0000-0002-8976-8651 | en |
local.profile.role | author | en |
local.profile.role | author | en |
local.identifier.unepublicationid | une:14996 | en |
local.identifier.handle | https://hdl.handle.net/1959.11/14781 | en |
dc.identifier.academiclevel | Academic | en |
local.title.maintitle | Apparent inhibition of thermal decomposition of hydrogencarbonate ion by poly(acrylic acid) | en |
local.output.categorydescription | C1 Refereed Article in a Scholarly Journal | en |
local.search.author | Al-Hamzah, Ali | en |
local.search.author | Fellows, Chris | en |
local.uneassociation | Unknown | en |
local.identifier.wosid | 000330501500004 | en |
local.year.published | 2014 | en |
local.subject.for2020 | 340603 Colloid and surface chemistry | en |
local.subject.for2020 | 340602 Chemical thermodynamics and energetics | en |
local.subject.for2020 | 340302 Macromolecular materials | en |
local.subject.seo2020 | 180205 Measurement and assessment of estuarine water quality | en |
local.subject.seo2020 | 180306 Measurement and assessment of freshwater quality (incl. physical and chemical conditions of water) | en |
Appears in Collections: | Journal Article School of Science and Technology |
Files in This Item:
File | Description | Size | Format |
---|
SCOPUSTM
Citations
15
checked on Nov 18, 2023
Page view(s)
1,212
checked on Nov 26, 2023
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.