Please use this identifier to cite or link to this item:

TitleRemoval of Erythrosine B dye from water effluents using crop waste pumpkin seed hulls as adsorbent
Author(s)Apostol, Laura Carmen
Ghinea, Cristina
Alves, M. M.
Gavrilescu, Maria
Food dye
Pumpkin seed hul
Adsorption mechanism
Pumpkin seed hull
Issue date2016
PublisherDesalination Publications
JournalDesalination and Water Treatment
CitationApostol, L.; Ghinea, Cristina; Alves, M. M.; Gavrilescu, Maria, Removal of Erythrosine B dye from water effluents using crop waste pumpkin seed hulls as adsorbent. Desalination and Water Treatment, 57, 22585-22608, 2016.
Abstract(s)Erythrosine B is widely used for coloring in various applications, especially in the food industry, despite its already proved toxicity and carcinogenicity. The agrowaste pumpkin seed hulls were applied as potential adsorbent for the removal of Erythrosine from aqueous solutions. Adsorption mechanism and kinetics were analyzed for design purposes. The seed hulls were characterized by specific techniques before and after dye retention. It was found that the attachment of Erythrosine B molecules on adsorbent surface may be attributed to the interactions between carboxyl and/or carbonyl groups of both dye and agrowaste wall components. A univariate approach followed by a factorial design was applied to study and analyze the experimental results as well as to estimate the combined effects of the process factors on the removal efficiency and dye uptake. Adsorption mechanism may be predominantly due to intraparticle diffusion, dependent on pore size. The four equilibrium models applied fitted the data well; the maximum adsorption capacity for Erythrosine was 16.4 mg/g. The results showed that adsorbent is effective for Erythrosine B removal for a large concentration range in aqueous solutions (5400 mg/L) in batch systems.
Publisher version
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

Files in This Item:
File Description SizeFormat 
document_29683_1.pdf3,2 MBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID