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Lignin Removal by Adsorption to Fly Ash in Wastewater Generated by Mechanical Pulping
Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design. (FSCN)ORCID iD: 0000-0003-3407-7973
Mid Sweden University, Faculty of Science, Technology and Media, Department of applied science and design. (FSCN)
SCA R&D Centre, Sundsvall, Sweden.
2012 (English)In: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 51, no 8, 3444-3451 p.Article in journal (Refereed) Published
Abstract [en]

Stringent discharge requirements call for advanced methods of wastewater treatment to take on where biological treatment fails to succeed. Here, the adsorption potential of fly ash, an on-site available and cheap material, was tested in batch and continuous flow fixed bed experiments using bleaching effluent from an integrated mill producing mechanical pulp. Various models were fitted to the experimental data to find the best description of the adsorption system and to obtain important model parameters: the Freundlich model yielded the highest correlation and indicated that the process was favorable. The bed depth service time model suggested that the adsorption in the column setup involved more than one rate limiting step, and the Thomas and Clark models generated similar curves which satisfactorily described adsorption at short bed depth. The fly ash showed good adsorptive properties of wood derived substances: both lignin and extractives were effectively separated from the effluent.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2012. Vol. 51, no 8, 3444-3451 p.
Keyword [en]
ACTIVATED CARBON; EQUILIBRIUM ISOTHERM; AQUEOUS-SOLUTION; FIXED-BED; KINETICS; IONS; BREAKTHROUGH; EFFLUENT; FLUORIDE; CHARCOAL
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-16158DOI: 10.1021/ie202462zISI: 000300854800027Scopus ID: 2-s2.0-84857881014OAI: oai:DiVA.org:miun-16158DiVA: diva2:524564
Available from: 2012-05-02 Created: 2012-05-02 Last updated: 2012-10-24Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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