Abstract
Elimination of Chromium (Cr6+) and Copper (Cu2+) from waste drain water is of great importance for the environment. Some industrial activities such as leather tanneries and electroplating pump huge amounts of water contaminated with toxic heavy metals. They should be of special interest in the field of industrial waste water treatment; adsorption is one of the most important methods used for toxic heavy metals elimination. Carbon soot that produced as a byproduct from the partial oxidation of natural gas has been utilized as an alternative and low cost adsorbent instead of costly expensive powdered activated carbon (PAC). The adsorption data showed that the removal of Cr6+ and Cu2+ decreases as the temperature increases. The enthalpy of adsorption was determined by fitting results to Van't Hoff equation, revealing that the adsorption is exothermic and this supports the lowering of adsorption capacity with the temperature. The study succeeded in providing an alternative and low cost adsorbent and can be utilized with appropriate efficiency.