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Removal of Lignin from Wastewater Generated by Mechanical Pulping Using Activated Charcoal and Fly Ash: Adsorption Kinetics
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics. (FSCN)
SCA R&D Ctr, SE-85121 Sundsvall, Sweden.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.ORCID iD: 0000-0003-3407-7973
2011 (English)In: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 50, no 13, 7733-7739 p.Article in journal (Refereed) Published
Abstract [en]

The possible application of adsorption for the removal of lignin-related material found in wastewater generated by mechanical pulping was investigated. Activated charcoal and fly ash were used as adsorbents in batch experiments. The lignin-related material exhibited properties well-suited for adsorption onto both adsorbents, although the sorption capacity of activated charcoal exceeds that of fly ash. The experimental data were fitted to pseudo-first- and pseudo-second-order rate kinetic expressions, and an attempt was made to find the rate-limiting step involved in the adsorption processes. The results showed that lignin adsorption onto both activated charcoal and fly ash follows pseudo-second-order rate kinetics and that both boundary-layer diffusion and intraparticle diffusion are likely involved in the rate-limiting mechanisms. Adsorption is an interesting option in advanced wastewater treatment, and fly ash appears to be a suitable low-cost adsorbent for recalcitrant organic pollutants.

Place, publisher, year, edition, pages
2011. Vol. 50, no 13, 7733-7739 p.
Keyword [en]
AQUEOUS-SOLUTION; DISSOLVED LIGNIN; BASIC DYE; WASTEWATERS; EFFLUENT; SUBSTANCES; EFFICIENCY; SORPTION; PHENOLS; CARBON
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-14166DOI: 10.1021/ie200379pISI: 000292069000003Scopus ID: 2-s2.0-79959827428OAI: oai:DiVA.org:miun-14166DiVA: diva2:431252
Available from: 2011-07-18 Created: 2011-07-18 Last updated: 2011-12-12Bibliographically approved

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Andersson, Kerstin I.Norgren, Magnus
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CiteExportLink to record
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Citation style
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