الفهرس 
Chapter 1 : IntroductionOnly 14 pages are availabe for public view
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Abstract
The present study deals with the characterization of some agricultural wastes (maize cob, sawdust and bagasse pith) compared to natural clay and activated carbon. The textural characteristics such as surface area, pore volume, porosity, pore size distribution, particle shape and density were determined.
Adsorption of mrthylene blue (MB) was used to measure the specific surface areas of lignocellulosic materials, natural clay and activated carbon. The work has shown that the MB adsorption is simple and reliable technique for the determination of the specific surface area of agricultural materials and natural clay.
The MB method was compared with the BET method at 77 K. The reality of this method seems very good.The pore size distribution results showed that sawdust , bagasse pith and natural clay was predominantly mesoporous, while maize cob and activated carbon contain both micro- and mesopores. The thermal behaviors of lignocellulosic materials, natural clay and activated carbon were studied using differential thermal analysis (DTA) and thermogravimetric analysis (TGA) analysis.