The contact angle of water on coal
β Scribed by D.V. Keller Jr
- Publisher
- Elsevier Science
- Year
- 1988
- Weight
- 26 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0166-6622
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π SIMILAR VOLUMES
Contact angles on both natural, fiat and prepared, polished surfaces of coal were measured for distilled water, solutions of several A13+ and Fe3+ coagulants, and commercial flocculants. The pH value was varied also. Contact angles increase up to coagulant and flocculant concentrations of -60 ppm an
Contact angle determinations were made to allow us to study the effect of the wavelength of illumination on the surface of hydrogenated amorphous silicon thin films. The films were prepared by the PECVD technique from pure silane under conditions which give good quality material. Advancing and reced