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Scientific Journal of Samarkand University

Abstract

In this paperbased on electron microscopic study of the samples of activated carbon obtained from walnut shells is shown that their structures have a developed porous surface. According to the results of semi-quantitative elemental analysis of the adsorbents investigated by the method of energy dispersive X-ray spectroscopy (EDAX), it was found that the adsorbent based on the walnut shells has the highest carbon content (92.3%). The activated carbon has the following characteristics: the moisture content is 6.9%, the total pore volume on water is 0.69 cm 3 /g, the pH of the aqueous extract is 6.9, the bulk density is 241 g/dm 3 , the adsorption activity on iodine is 63.8%, the specific surface area of 912 m 2 /g.

First Page

38

Last Page

42

References

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