Abstract
Cow bone charcoal (CBC) was synthesized and used for the removal of metals ions (manganese, iron, nickel and copper) from aqueous solutions. Two different adsorption models were used for analyzing the data. Adsorption capacities were determined: copper ions exhibit the greatest adsorption on cow bone charcoal because of their size and pH conditions. Adsorption capacity varies as a function of pH. Adsorption isotherms from aqueous solution of heavy metals on CBC were determined. Adsorption isotherms are consistent with Langmuir´s adsorption model. Adsorbent quantity and immersion enthalpy were studied.
Highlights
At present, adsorption is widely accepted in environmental treatment applications throughout the world
These results show that Cow bone charcoal (CBC) is an suitable material for use in the removal of these ions
It can be concluded that the CBC has the ability to retain Mn2+, Fe2+, Ni2+
Summary
Adsorption is widely accepted in environmental treatment applications throughout the world. Liquid–solid adsorption systems are based on the ability of certain solids to preferentially concentrate specific substances from solutions onto their surfaces. This principle can be used for the Materials 2010, 3 removal of pollutants, such as metal ions and organics, from wastewaters [1,2,3,4]. A wide range of adsorbents have been developed and tested, including several activated carbons [5,6,7,8]. A number of low-cost agricultural wastes; mud tire rubber and fly ash have been used for the removal of a range of metal ions. Several natural resources have been studied, including tree fern, peat coal and chitosan
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