between the bimodal gamma pore size distribution and DFT-cumregularization based pore size distribution is also observed, supporting the validity of the proposed model. Moreno-Castilla, C. et al. Carbon, 2001, 39, (9), 1415-1420. Olive-mill waste water is produced in large quantities during the manufacture process of the olive oil in mills. This by-product has been used as raw material to produce activated carbons by both chemical and physical activation methods. In the first case, KOH and H3PO4 were used as activating agent, and in the second ease, CO2 at 840Β°C for different periods of time. Results obtained indicate that the chemical activation with KOH at 800Β°C, in an inert atmosphere, yielded activated carbons with the highest surface area and more developed micro, meso and macroporosity.
02/01435 Chemical and physical activation of olive-mill waste water to produce activated carbons
02/01436 Comparative studies of petroleum residues and coal tar by air blowing
Zhang, H. et aL Meitan Zhuanhua, 2001, 24, (3), 79-82. (In Chinese) Coal tar pitch and petroleum pitch were prepared from petroleum residues and coal tar by air blowing respectively. Raw material and modified pitches were characterized by 1H-NMR, 13C-NMR, softening point, elemental analysis, solubility, and polarized microscope. The study of the pitches showed that the air blowing effectively increases softening point, insoluble contents, coke yield through dehydrogenating polymerization. Both series of pitches were carbonized at 480 = under 1.6 MPa. The optical texture of coke obtained from coal tar pitches varied according to the oxidation condition. But the optical texture of coke obtained from petroleum pitches all showed small domains.
02/01437 Ecological issues in storing and treatment of mineral fraction from solid fuels at thermal power plants Madoyan, A.A. Ekol. Prom. Proizvod., 2001, 2, 44-46. (In Russian) Disposal of coal-burning power plant ashes is discussed. Recultivation of landfills with grasses and shrubs is considered.