NATURAL SCIENCES

Journal of fundamental
and
applied researches

Concentraction of toxic metal ions and oilson the new carbon-silica sorbent

2013. 2, pp. 168-181

Meretin Roman N.  - post-graduate student, Astrakhan State University, 1 Shahumyan Sq., Astrakhan, 414000, Russian Federation, evgshachneva@yandex.ru

The sorption of heavy metals ions mercury, cadmium and lead on the sorbent was studied. This sorbent is obtained by carbonization of rice husk, which is little known commodities. Sorption isotherms investigated static them from aqueous solutions, calculate the change in enthalpy (?H), isobaric-isothermal potential (?G) and entropy of sorption ((S). Sorption kinetics of mercury, lead and cadmium ions from aqueous solutions was calculated. Found that this process is dominated by spontaneous physical adsorption mechanism. Sorption kinetics study allowed establishing sorption equilibrium in time 78 hours. The results can be used to purify water from toxic metals and ions of interest to specialists working in the field of environmental protection.

Key words: industrial toxicants,sorbent,sorption,rice husks,carbonization,the ions of toxic metals,oils,water purification,industrial toxicants,mercury,lead,cadmium

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