Abstract
Heavy-metal pollution is a major problem in towns and cities alike. Vegetable sorbents have been actively researched in recent years as a solution to environmental problems. The Republic of North Ossetia-Alania mainly grows corn and hops. This paper presents the results of using vegetable sorbents (hop cones, corn snouts and cobs) to adsorb iron (II) ions from model solutions of Mohr’s salt (NH4)2Fe(SO4)2·6H2O. It has been found out that crushed corn cobs do not adsorb iron (II) ions. Hop cones are the best sorbent of the three. Data was used to plot the adsorption isotherms described by the Langmuir equation. The research team calculated the adsorption equilibrium constant as well as the maximum adsorption.
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