97/04635 Chemically modified wasted fly ash from the Konin power plant and its adsorption properties: Sarbak, Z. and Kramer-Wachowiak, M. Pol. J. Environ. Stud., 1997, 6, (2), 53–57
- Publisher
- Elsevier Science
- Year
- 1997
- Weight
- 196 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0140-6701
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✦ Synopsis
In Japanese) In the preparation of the concrete, the following are mixed: (A) concrete raw materials containing cement and aggregates, (B) algicides and fungicides, and, for example, selective organic herbicides and/or bactericidal inorganic metal ions, preferably Ag ions, and (C) SiOz fume, fly ash and/or powered blast furnace slags. The herbicides are added to readymixed concrete prepared from A and C and water in an amount of 0.3-6 kg/ m', and the concrete is used in building. 97104631 Characteristics of chars produced from devolatilization of Yallourn brown coal at elevated pressure Yeasmin, H. et al. DGMK Tagungsber., 1997, 9703, (Proceedings ICCS '97.
Volume 2), 689-692. Yallourn brown coal was devolatized under rapid heating conditions in pressurized drop-tube furnace using a sample of size fraction 37-53 rrm. Tests were carried out under a Nz atmosphere at pressures of 100 and 500 kPa, temperatures of 873, 1073, and 1273 K, and at residence times ranging from 0.2 to 2 s. For each run, weight loss was determined. Char structural parameters, such as CO2 surface area, true densities, micropore volume, and particle size distribution were studied. Only a small swelling was evident at 100 kPa and 873 K, at residence times ~0.14 s. At >873 K, more reactions shifted from the micropore region to the macropore region and surface area remained constant during the initial weight loss region and >7O weight loss.