Adsorption of Cd (II), Pb (II) and Cr (III) on chemically modified Euterpe Oleracea biomass for the remediation of water pollution

Simple item page
dc.contributor.authorGoncalves Junior, Affonso Celso
dc.contributor.authorSchwantes, Daniel
dc.contributor.authorConradi Junior, Elio
dc.contributor.authorZimmermann, Juliano
dc.contributor.authorCoelho, Gustavo Ferreira
dc.date.accessioned2024-01-10T13:09:59Z
dc.date.available2024-01-10T13:09:59Z
dc.date.issued2021
dc.description.abstractThis study evaluated the use of Euterpe oleracea endocarp after chemical modification with H2O2, H2SO4 and NaOH for the removal of Cd2+, Pb2+ and Cr3+ from water. Therefore, the adsorbent was characterized for its chemical composition, Fourier Transform Infrared (FTIR) analysis, Scanning Electron Microscope (SEM) images, and pH of point of zero charge (pH(PZC)), thermal stability and porosimetry. Adsorption tests were conducted by using a Central Composite Design (CCD). Pseudo-first order, pseudosecond order, Elovich and intraparticle diffusion models evaluated the adsorption kinetics, and sorption isotherms were linearized according to Langmuir, Freundlich and Dubinin- Radushkevich. The effect of initial concentration, temperature in the process and the desorption were also analyzed. SEM results showed that the acai adsorbents (or CA) had irregular and heterogeneous structure, and IR analysis evidenced the presence of hydroxyl, aliphatic, phenolic and carboxylic surface groups; both analyses indicate favorable adsorption characteristics. The pHPZC of the adsorbent is 4.41, 4.02 and 7.10 for CA modified with H2O2, H2SO4 and NaOH, respectively. The optimum adsorption conditions were pH 5.0, within 40 min, with 4 g L-1 as the ideal adsorbent dose. The predominance of chemisorption occurs, in mono and multilayer. The adsorption is only spontaneous for Cd2+ at 15 and 25 degrees C. The CA has the potential to increase the removal efficiency of Cd, Pb and Cr, when chemically modified, particularly with H2O2 and H2SO4.
dc.description.funderCNPq
dc.description.funderCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (Capes)
dc.fechaingreso.objetodigital2024-05-30
dc.format.extent22 páginas
dc.fuente.origenWOS
dc.identifier.doi10.4025/actascitechnol.v43i1.50263
dc.identifier.eissn1807-8664
dc.identifier.issn1806-2563
dc.identifier.urihttps://doi.org/10.4025/actascitechnol.v43i1.50263
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77735
dc.identifier.wosidWOS:000644860300021
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Schwantes , Daniel; 0000-0002-2251-5887; 1095189
dc.language.isoen
dc.nota.accesoContenido parcial
dc.publisherUNIV ESTADUAL MARINGA, PRO-REITORIA PESQUISA POS-GRADUACAO
dc.revistaACTA SCIENTIARUM-TECHNOLOGY
dc.rightsacceso restringido
dc.subjectbiosorption
dc.subjectwater contamination
dc.subjectmetals adsorption
dc.subjectwater treatment
dc.subjectREMOVAL
dc.subjectADSORBENT
dc.subjectWASTE
dc.subjectAPPLICABILITY
dc.subjectSPECTROSCOPY
dc.subjectBIOSORPTION
dc.subjectCADMIUM
dc.subjectMETALS
dc.subjectSEEDS
dc.subjectBARK
dc.subject.ods06 Clean Water and Sanitation
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa06 Agua limpia y saneamiento
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleAdsorption of Cd (II), Pb (II) and Cr (III) on chemically modified Euterpe Oleracea biomass for the remediation of water pollution
dc.typeartículo
dc.volumen43
sipa.codpersvinculados1095189
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Adsorption of Cd (II), Pb (II) and Cr (III) on chemically modified Euterpe Oleracea biomass for the remediation of water pollution.pdf
Size:
3.18 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas