Abstract

Our works presents a double environmental aspect, on the one hand a valuation of natural products in case the date's stones and secondly study the effectiveness of activated carbon adsorbent from these nuclei.

First time, we have developed a material rich in carbon from carbonization of homogenate obtained from date pits at 800 °C for a residence time of 60 minutes. Both types of coals obtained; crushed and carbonized; were used as adsorbents for water containing lead. All tests were performed in static mode.

To improve the adsorption capacity of carbonisas the date stones have undergone a chemical treatment with nitric acid 10 N for a day. Indeed, the effectiveness is evaluated through the following factors: contact time, mass of solid, ratio (volume of liquid / solid mass), stirring speed, temperature, pH and initial concentration of the metal.

Once the optimum conditions are determined, a comparison study was conducted between the adsorption efficiency of activated carbon produced from date's stones and that of commercialized coal towards lead ions contained only in solution. The influence of the presence of other metals in solution i.e., ions of cobalt, copper and zinc on the adsorption of lead ions was also discussed. It is nevertheless worth noting that the modeling results obtained gave adsorption isotherms of type L.

Keywords: Adsorption; Cores dates; Coal crude Carbonization, Activation Heavy Metals,
Lead, Cobalt, Copper, Zinc.

Information

Item Type:	Thesis
Divisions:
ePrint ID:	220
Date Deposited:	2014-12-16
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/en/publication/article/220

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