In 1834, it was first distilled from coal tar, a by-product of coal used in coke or coal gas production. But blue was the only color they could make. One day, in 1856, an 18 year old chemistry student ...

A novel process configuration has been developed for producing clean middle-distillate fuels from coal with minimal emissions. The EMS Energy Institute at Penn State University has developed and ...

Oil is convenient for electricity balancing, but it tends to be high-priced. [3] Political leaders created new narratives that hid the problem of inadequate middle-distillate and coal supply.

The city of Alexandria has agreed to halt the leak of coal tar into the Potomac River once and for all and to clean up the mess, as part of the settlement of a federal lawsuit brought by an ...

Coal tar doesn't impact water quality, but can irritate the skin. The project should remove about 70% of the coal tar from the river, authorities said.