Sorbents for the oxidation and removal of mercury

A method of treating coal for combustion in a combustion chamber at a coal-combustion facility comprising a sorbent injection system for injecting activated carbon into a flue gas formed by the combustion, the method comprising:

• adding an additive to the coal, wherein the adding of the additive to the coal is performed at the coal-combustion facility before the coal enters the combustion chamber, and the additive comprises Br2, a bromide compound, HBr, or a combination thereof.

A method of treating coal, the method comprising:

• adding an additive to the coal, the additive comprising Br2, I2, a bromide compound, an iodide compound, HBr, HI, or a combination thereof;
• wherein the adding of the additive to the coal is performed before the coal enters a combustion chamber at a coal-combustion facility comprising a sorbent injection system that injects activated carbon into a flue gas formed by the combustion, and the adding of the additive to the coal is sufficient such that a weight ratio of the Br2, I2, bromide compound, iodide compound, HBr, HI, or combination thereof in the additive added to the coal to an amount of the activated carbon injected into the flue gas is from about 1:100 to about 30:100.

A method of treating coal, the method comprising:

• adding an additive to the coal, wherein the additive comprises Br2, a bromide compound, HBr, or a combination thereof;
• wherein the adding of the additive to the coal is performed before the coal enters a combustion chamber at a coal-combustion facility, the coal-combustion facility comprising a flue gas activated carbon injection system.