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Lead and vanadium removal from a real industrial wastewater by gravitational settling/sedimentation and sorption onto Pinus sylvestris sawdust
Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.ORCID iD: 0000-0002-7920-8001
Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.ORCID iD: 0000-0002-1903-760X
2009 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 100, no 1, p. 235-243Article in journal (Refereed) Published
Abstract [en]

Batch sorption with untreated Pinus sylvestris sawdust after settling/sedimentation phase to removevanadium and lead from a real industrial wastewater was investigated using different adsorbent doses,initial pH, and contact time. The development of pH along the sorption test and a parallel investigationof metals release from sawdust in distilled water were carried out. In order to evaluate kinetic parametersand equilibrium isotherms, Lagergren first-order, pseudo-second-order, intra-particle diffusion andFreundlich models were explored. When the initial pH was reduced from 7.4 to 4.0, the sorptionefficiency increased from 32% to 99% for Pb and from 43% to 95% for V. Whereas, V removal was positivelycorrelated with the adsorbent dose, Pb removal was not. The sorption process was best described bypseudo-second-order kinetics. According to Freundlich parameters (Kf and n) sawdust presentedunfavourable intensity for sorption of V.Batch sorption with untreated Pinus sylvestris sawdust after settling/sedimentation phase to removevanadium and lead from a real industrial wastewater was investigated using different adsorbent doses,initial pH, and contact time. The development of pH along the sorption test and a parallel investigationof metals release from sawdust in distilled water were carried out. In order to evaluate kinetic parametersand equilibrium isotherms, Lagergren first-order, pseudo-second-order, intra-particle diffusion andFreundlich models were explored. When the initial pH was reduced from 7.4 to 4.0, the sorptionefficiency increased from 32% to 99% for Pb and from 43% to 95% for V. Whereas, V removal was positivelycorrelated with the adsorbent dose, Pb removal was not. The sorption process was best described bypseudo-second-order kinetics. According to Freundlich parameters (Kf and n) sawdust presentedunfavourable intensity for sorption of V.

Place, publisher, year, edition, pages
2009. Vol. 100, no 1, p. 235-243
Keywords [en]
Sorption kinetics Sorption isotherms Heavy metals Wood industry Low-cost adsorbents
National Category
Natural Sciences
Research subject
Environmental Science, Environmental technology
Identifiers
URN: urn:nbn:se:lnu:diva-7135DOI: 10.1016/j.biortech.2008.05.055OAI: oai:DiVA.org:lnu-7135DiVA, id: diva2:343162
Available from: 2010-08-12 Created: 2010-08-12 Last updated: 2017-12-12Bibliographically approved

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Kaczala, FabioMarques, MarciaHogland, William

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