The Removal of Phenol and Its Derivatives from Aqueous Solutions by Adsorption on Petroleum Asphaltene

Table 1

Elemental composition of asphaltene.

Composition (% w/w)					Atomic ratios
C	H	N	S	O	H/C	N/C	S/C	O/C
80.41	8.16	2.17	1.13	8.12	1.220	0.012	0.038	0.020