Adsorption studies of cadmium ions on alginate–calcium carbonate composite beads View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2017-05

AUTHORS

Zahid Mahmood, Athar Amin, Uzma Zafar, Muhammad Amir Raza, Irfan Hafeez, Adnan Akram

ABSTRACT

Alginate–calcium carbonate composite material was prepared in the form of beads and characterized using Fourier transform infra red (FT-IR) spectroscopy and scanning electron microscope (SEM) techniques. The adsorption of Cd2+ ions was studied through batch experiments. The adsorption parameters such as contact time (120 min), adsorbent dose (1.5 g), initial metal ion concentration(10 mg/L), pH (6) and agitation speed (150 rpm) were optimized at room temperature. Langmuir and Freundlich isotherms were applied to the data and it was noted that the adsorption of Cd2+ ions is better explained by Freundlich model. The kinetic studies showed that the adsorption of Cd2+ ions followed pseudo-first order kinetics. Thermodynamic parameters like ∆G0, ∆H0 and ∆S0 were calculated and on the basis of these values it was established that the adsorption process is feasible and endothermic in nature. It was concluded from the study that the composite material of alginate and calcium carbonate can effectively be used to recover Cd2+ ions from wastewater. More... »

PAGES

915-921

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s13201-015-0302-2

DOI

http://dx.doi.org/10.1007/s13201-015-0302-2

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1021750617


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