Problems of high fluoride waters in Turkey

Problems of high fluoride waters in Turkey

The geochemistry theory can provide information about the distribution, contents and migration in nature of the chemical elements in minerals, rocks, soils, waters, atmospheres, etc. Therefore, it has been applied extensively. Nowadays the petroleum supply throughout the world is in tension. The coal resources are unfriendly to the environment, because coals contain many harmful chemical elements. How to exploit the efficient clean liquid energy from coals is a hot subject of study. This paper deals with the present domestic and international applications of geochemistry in coal liquefaction research, on the basis of coal geology, points out the shortages and problems that need to be dissolved, clarifies the necessity of coal liquefaction technique research under the coal geochemistry background. To enhance the oil production and reduce environmental effects, the direct coal liquefaction technique research should take it into consideration the three-aspects coupling pattern, which includes the influence of coal direct liquefaction activity combined with different geochemical parameters, the different migration behaviors of harmful elements in the coal liquefaction process, and the geological control factors of coal-forming environments. It is indicated that the coal geochemistry is extensively applied in coal direct liquefaction technique research.