Shrimp shell as an efficient bioadsorbent for Acid Blue 25 dye removal from aqueous solution
2014 (English)In: Journal of the Taiwan Institute of Chemical Engineers / Elsevier, ISSN 1876-1070, Vol. 45, no 6, 2926-2934 p.Article in journal (Refereed) Published
This study focused on kinetics, equilibrium and thermodynamics of Acid Blue 25 (AB25) dye biosorption from aqueous solution using the shell of Penaeus indicus shrimp as a biosorbent. Optimum sorption conditions were identified by varying solution pH, biomass dosage, initial dye concentration, contact time, salinity and ionic strength. Equilibrium data were well fitted by the Temkin, Freundlich and Langmuir isotherm models, while the pseudo-second order model best described kinetics. Thermodynamic data showed that AB25 dye biosorption onto shrimp shell was a feasible, spontaneous and exothermic one. The biosorption capacity increased with decreasing the sorbent particle size and with the addition of salts (NaCl, MgSO4, KNO3 and KH2PO4). The high sorption capacity of P. indicus shell obtained in this study suggests its use as an effective, low-cost biosorbent for the removal of acid dyes from wastewaters.
Place, publisher, year, edition, pages
2014. Vol. 45, no 6, 2926-2934 p.
Acid Blue 25, Penaeus indicus shell, Biosorption, Kinetics, Equilibrium
IdentifiersURN: urn:nbn:se:kth:diva-160421DOI: 10.1016/j.jtice.2014.09.019ISI: 000347742300011ScopusID: 2-s2.0-84919418412OAI: oai:DiVA.org:kth-160421DiVA: diva2:790088
QC 201502232015-02-232015-02-192015-02-23Bibliographically approved