Adsorption of COD in Coking Wastewater on Nitric Acid-Modified Blue Coke Activated Carbon

Table 1

Proximate and elemental analyses of blue coke powder.

	Proximate analysis				Elemental analysis
Blue coke powder	Mt	Aad	Vad	FCad	Cad	Oad	Had	Nad	St,ad
	2.15	16.77	12.07	69.01	72.88	0.3	1.06	0.88	0.6

Note: M_t is the total moisture content, A_ad is the ash content as air dry basis, V_ad is the volatile content as air dry basis, FC_ad is the fixed carbon content as air dry basis, C_ad is the carbon element content as air dry basis, O_ad is the oxygen element content as air dry basis, H_ad is the hydrogen element content as air dry basis, N_ad is the nitrogen element content as air dry basis, and S_t,ad is the sulphur element content as air dry basis.