Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Sorption of heavy metals from gold mining wastewater using chitosan
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Teknisk strömningslära. National University of Engineering (UNI), Nicaragua.
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Kemisk apparatteknik.ORCID-id: 0000-0001-8241-2225
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Teknisk strömningslära.
2011 (Engelska)Ingår i: Journal of the Taiwan Institute of Chemical Engineers / Elsevier, ISSN 1876-1070, E-ISSN 1876-1089, Vol. 42, nr 6, s. 976-988Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This study is concerned with the use of chitosan produced from shrimp shell waste for the removal of Cu(II), Hg(II), Pb(II) and Zn(II) from gold ore tailing solutions containing cyanide. This work involved the study of equilibrium and kinetic adsorption, the physicochemical characterization of mining effluents and desorption using different regenerating solutions. The experimental results showed that the adsorption capacity of chitosan is a function of the solution pH and that the optimum pH for these metallic ions is 6, except for Hg (pH 4). The equilibrium data were described using the Langmuir, Freundlich, Redlich-Peterson and SIPS isotherm models. The Langmuir equation was used to find the maximum adsorption capacity for Cu (79.94 mg/g), Hg (109.55 mg/g), Pb (58.71 mg)g) and Zn (47.15 mg/g). To determine the rate-controlling mechanism for metallic ion adsorption, pseudo-first-order, pseudo-second-order and the Elovich equation kinetic models were tested with experimental adsorption kinetic data. Tests conducted with gold ore tailing solutions indicated that chitosan is effective to remove these metallic ions above 70%. Desorption studies revealed that the regeneration of chitosan saturated with these metallic ions depends on the type and concentration of the regenerating solution ((NH(4))(2)SO(4), H(2)SO(4), HCl, NaOH and NaCl).

Ort, förlag, år, upplaga, sidor
Elsevier, 2011. Vol. 42, nr 6, s. 976-988
Nyckelord [en]
Adsorption equilibrium, Adsorption kinetics, Desorption, Heavy metal, Mining effluents, Shrimp shells
Nationell ämneskategori
Kemiteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-53405DOI: 10.1016/j.jtice.2011.05.003ISI: 000297278800015Scopus ID: 2-s2.0-82855161435OAI: oai:DiVA.org:kth-53405DiVA, id: diva2:470202
Anmärkning

QC 20111228

Tillgänglig från: 2011-12-28 Skapad: 2011-12-28 Senast uppdaterad: 2017-12-08Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

Moreno, Luis

Sök vidare i DiVA

Av författaren/redaktören
Benavente, MarthaMoreno, LuisMartinez, Joaquin
Av organisationen
Teknisk strömningsläraKemisk apparatteknik
I samma tidskrift
Journal of the Taiwan Institute of Chemical Engineers / Elsevier
Kemiteknik

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 490 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf