Abstract:
Carbon adsorbent was prepared from carbonized coconut shells with zinc chloride solution. Effects of concentrations of the solution, temperature and periods of preparation were investigated. As an increase in concentration to 50% w/w, surface area increased slinghtly to 711 m2/g, while iodine adsorption rised significantly to 898 mg/g. Both characteristics were also increased with an increase in temperature to 500 ํC and with increase in period to 60 min. On propane adsorption at 50 ํC, the amount adsorbed was measured from breakthrough curves for a packed column with the length of 11 cm. All isotherms were agreed with Langmuir model. It was found that the maximum amount adsorbed corresponded to the surface area of prepared adsorbent. While the adsorption Langmium constants of all adsorbents were close to one another