A Practical Route for Greening of Coal

Global surface temperature anomaly yields serious consequences in the inhabited environment, which is considered responsible for the rising of sea levels, shrinkage of snow-covered areas, shortage of fresh water, and the disasters caused by abnormal weather. Accumulation of CO2 in the atmosphere is considered responsible for the global temperature anomaly, and industrial activities have accelerated the CO2 accumulation because of the combustion of fossil fuels. The rate of economic development is much faster in the early years of the 21 century than ever before. Therefore, the rate of CO2 accumulation in the atmosphere is definitely much faster than past. Although coal is not clean, it is indispensable energy source of the world for quite a long time as shown in Fig. 1. Therefore, more development of economy will result in heavier pollution of environment. However, complete greening of coal will radically solve environmental problems, and the fast knot between economic development and the environmental pollution is unlocked.