Table 6.

FTIR results before and post sorption.

Functional Group	PPH		CPH		NPH
	Before sorption	Post sorption	Before sorption	Post sorption	Before sorption	Post sorption
–OH/–NH	3207	3190	3232	3198	–	–
–CH	–	–	2980	2980	2980	2980
–C]C (aromatic)	1596	1590	1596	1588	–	–
	1680	1671	1680	1668	–	–
	1640	1636	1640	1630	–	–
–C=O	1400	1388	1400	1396	1400	1389
–COC	1042	1040	1042	1037	1042	1035
	1031	1028	1031	1030	1031	1030
	1004	1000	1004	997	1004	995
–Fe-O	–	–	–	–	617	620
	–	–	–	–	567	574