Journal
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
Volume 40, Issue 5, Pages 657-667Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01932691.2018.1478301
Keywords
Binary adsorption; isotherms; kinetics; silica aerogel; thermodynamics
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Heavy metals pollution is one of today's concerns of human societies. In the present project, mercapto functionalized silica aerogel was used to remove Zn2+ and Mn2+ from aqueous solution. The simultaneous adsorption of these ions has also studied. The kinetics and thermodynamics of the adsorption process as well as various isotherm models have been investigated. The results show that the adsorption process is spontaneous and favorable. The adsorption followed the Langmuir model and the maximum adsorption capacity for manganese and zinc was 1.38 and 1.33 mmol/lit, respectively. The kinetics of the adsorption process corresponds to the pseudo-second order equation. Intra particle diffusion model illustrated a greater affinity to the zinc ion, which confirmed by simultaneous adsorption results. [GRAPHICS] .
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