Mechanism and equilibrium modeling of aluminosilicate scaling in alkaline media Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/1831cp444

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Problems with aluminosilicate scales in pulp and paper recycle streams create an interest in the formation mechanism and the chemical equilibrium of aluminosilicates. Evaluating solubility data from a system containing Na⁺ CI⁻, and OH⁻ ions as well as aluminium and silicon compounds, allowed to elucidate the characteristics of the aluminosilicate scaling process, especially with regards to the influence of the aluminium and silicon distribution in solution. A chemical model was developed to describe the equilibrium of sodalite and hydroxysodalite over a range of conditions encountered in industrial liquors (OH⁻ molality and ionic strength from 1 to 4). Pitzer's activity coefficient equations were successfully fitted to describe the apparent solubility product (i.e., [Al] • [Si], in molalities) over the whole range of experimental data. Unfortunately, the regressed coefficients are linearly dependent, thus, physically insignificant. Pitzer coefficients will be assessable only if single electrolyte parameters for either the aluminium or the silicon species are made available. The apparent solubility product is graphically represented as a function of ionic strength and pH. An estimation on technical liquors (like white, green or black liquor) which contain additional anions is outlined.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 8-bit Grayscale) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-06-26T22:15:45Z (GMT) No. of bitstreams: 1 GasteigerHubertA1989.pdf: 722404 bytes, checksum: db98ed69ab033c79a54b45e43bb1c6ef (MD5)
  • description.provenance : Made available in DSpace on 2013-06-26T22:15:45Z (GMT). No. of bitstreams: 1 GasteigerHubertA1989.pdf: 722404 bytes, checksum: db98ed69ab033c79a54b45e43bb1c6ef (MD5) Previous issue date: 1988-10-03
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-05-29T19:08:05Z (GMT) No. of bitstreams: 1 GasteigerHubertA1989.pdf: 722404 bytes, checksum: db98ed69ab033c79a54b45e43bb1c6ef (MD5)
  • description.provenance : Submitted by Katy Davis (kdscannerosu@gmail.com) on 2013-05-24T19:11:31Z No. of bitstreams: 1 GasteigerHubertA1989.pdf: 722404 bytes, checksum: db98ed69ab033c79a54b45e43bb1c6ef (MD5)

Relationships

In Administrative Set:
Last modified: 08/22/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items