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Removal of Lignin from Wastewater Generated by Mechanical Pulping Using Activated Charcoal and Fly Ash: Adsorption Kinetics
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap, teknik och matematik. (FSCN)
SCA R&D Ctr, SE-85121 Sundsvall, Sweden.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för naturvetenskap, teknik och matematik.ORCID-id: 0000-0003-3407-7973
2011 (Engelska)Ingår i: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 50, nr 13, s. 7733-7739Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
2011. Vol. 50, nr 13, s. 7733-7739
Nyckelord [en]
AQUEOUS-SOLUTION; DISSOLVED LIGNIN; BASIC DYE; WASTEWATERS; EFFLUENT; SUBSTANCES; EFFICIENCY; SORPTION; PHENOLS; CARBON
Nationell ämneskategori
Kemiteknik
Identifikatorer
URN: urn:nbn:se:miun:diva-14166DOI: 10.1021/ie200379pISI: 000292069000003Scopus ID: 2-s2.0-79959827428OAI: oai:DiVA.org:miun-14166DiVA, id: diva2:431252
Tillgänglig från: 2011-07-18 Skapad: 2011-07-18 Senast uppdaterad: 2017-12-08Bibliografiskt granskad

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