The impact of the adsorbent hydration on the cadmium adsorption from water solutions
2018
Milivojević, Milan | Devrnja, Danijela | Antanasković, Ivan | Jovanović, Jovan | Kijevčanin, Mirjana
In this paper, adsorption of cadmium ions from aqueous solutions was investigated, using Ca-alginate particles and biocomposites made from Ca-alginate and hemp fiber with differently pretreatment to determine the kinetics and adsorption isotherms for these processes. The concentrations of cadmium were monitored using atomic absorption spectrophotometry (AAS). Based on the experimental results, the coefficients for Langmuir and Freundlich adsorption isotherms were determined. For the adsorption kinetics study pseudo-first order, pseudo-second order, and the Weber Morris model were used. The obtained results proved that pretreatment had large impact on cadmium absorption and that investigated materials may help to reduce the cadmium concentration in a cost-effective and efficient manner.
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