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Comparative study of the removal of phenolic compounds by biological and non-biological adsorbents

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dc.contributor.author Navarro A.E. es_PE
dc.contributor.author Cuizano N.A. es_PE
dc.contributor.author Lazo J.C. es_PE
dc.contributor.author Sun-Kou M.R. es_PE
dc.contributor.author Llanos B.P. es_PE
dc.date.accessioned 2024-05-30T23:13:38Z
dc.date.available 2024-05-30T23:13:38Z
dc.date.issued 2009
dc.description The authors thank the National Council of Science and Technology of Peru for the grant 152-2006-CONCYTEC-OAJ used in carrying out this work. We also wish to extend our grateful appreciation to Rosario Portales, Todd Kelly and Richard Buran for their contributions and critical comments regarding this research.
dc.description.abstract The ability of biological and non-biological adsorbents to remove 2-nitrophenol (2-NP) and 2-chlorophenol (2-CP) from aqueous solutions in batch experiments at room temperature was compared. The marine seaweeds Macrocystis integrifolia Bory (S1) and Lessonia nigrescens Bory (S2) were cross-linked with CaCl2 to enhance their mechanical properties. Natural bentonite was chemically exchanged with hexadecyltrimethylammonium bromide (B1) and bencyltriethylammonium chloride (B2) to increase their affinity towards organic compounds as well. The adsorption capacity of all of the adsorbents strongly depends on solution pH, whereas equilibrium assays showed a mixed mechanism according to the Langmuir and Freundlich isotherms. The maximum adsorption capacity of 2-NP follows the trend: S1 > S2 > B2 > B1 within the range of 97.37 and 18.64 mg g−1 whereas for 2-CP, it ranged between 24.18 and 9.95 mg g−1 with the trend: S1 > S2 > B2 ≈ B1. The importance of the octanol–water partition coefficient as the main factor on the adsorption of these compounds on two different kinds of adsorbents is discussed.
dc.description.sponsorship Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica - Concytec
dc.identifier.doi https://doi.org/10.1016/j.jhazmat.2008.09.077
dc.identifier.scopus 2-s2.0-62949125087
dc.identifier.uri https://hdl.handle.net/20.500.12390/929
dc.language.iso eng
dc.publisher Elsevier
dc.rights info:eu-repo/semantics/openAccess
dc.subject pH
dc.subject Exchanged bentonite es_PE
dc.subject Cross-linked algae es_PE
dc.subject Partition coefficient es_PE
dc.subject Adsorption es_PE
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#1.06.03
dc.title Comparative study of the removal of phenolic compounds by biological and non-biological adsorbents
dc.type info:eu-repo/semantics/article
dspace.entity.type Publication
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