Eliminación de Metales Pesados en el agua de reinyección del Campo Libertador Oeste utilizando Quitosan.

Abstract

On extracting and production of crude oil, a great deal of water is obtained, partially injected to subsoil and another part poured to the environmet. The re – injected of water has very toxic contaminants such as oil residuals, amid es, chlorides, etc. Contaminant s of big preoccupation are heavy metals, because they are difficult to degrade and accumulated in environment and organisms producing irreversible problems. It is proposed an economic and reaso nable tre a tment consisting on h e avy absor p tion metals of water re - injection applying a solution of kitosan, therefore the stability of re - injection system s at Libertador Oeste field, by m eans of a six mon th period of its physics chemical properties included ir on, manganese and magnesium determinations ( heavy metal s in major concentration ) . It is known that slight variation re - injection system s, proceeded of different c oncentrations of kitosan adding so lution ( with a pure grade of 80%) on water of produced re - injection at the Atacapi station , water with more quality of iron, manganese and magnesium at Libertador Oeste field. The best working rank has 2 to 3 % fron the acid solution of kitosan in re - injection water s, in this rank the best absorp tion is not obtained from heavy metals but an improvement of other properties such as: alkalinity, quantily of suspended total solids, calcic hardness , total hardness , etc.