چكيده به لاتين
Pyrolysis as a process of producing affordable and adsorbent materials known undervalued. One of the main products in the slow pyrolysis process is solid carbon-rich organic chemistry, which is a variety of applications including soil, desertification, waste management and storage of energy. The use of charcoal to remove organic contaminants from the waste water is considered. In this study, the adsorption process of lead from a synthetic wastewater samples, using bio-fuel made from biomass leaves avocados, oranges and walnuts in a batch system was investigated. Chemistry and chemical biology by enabling single step, using sulfuric acid as activating agent and the particle size mm 2 and nitrogen flow rate l / min 5, at 600 for 90 minutes, the reactor internal diameter cm 3/8 and cm 32 was produced. The optimum adsorbent dose of 5.1 grams per liter, 180 minutes call time balance, and a pH of 5.6, was obtained through batch experiments. In the study of kinetics, pseudo-second-best match to attract indicated. Lead adsorption isotherms obtained from batch experiments were evaluated and it was shown that Freundlich isotherm better fit to the data is compared to other isotherms. Biological properties of coals by tests BET, FTIR, TGA and FESEM were performed. In the batch system, the impact absorption parameters including contact time, pH, adsorbent dosage, initial concentrations of lead and temperature were studied. The maximum adsorption capacity for organic chemistry and avocado trees, orange and walnut respectively mg / g 46/60, 42/59 and 48/58, respectively. Based on the results of biological chemistry from the leaves of orange and walnut Avocado better performance in the absorption of lead.
