Remediation of Methyl Red Dye from Aqueous Solutions by Using Biosorbents Developed from Floral Waste

Table 2

FT-IR peak assignments of MGP and RPP along with previous work done.

Peaks	Functional group	Attributions	References
1735	C=O, (in all plants)	Stretching vibrations (SV)	[33, 62]
2851–2850 cm^−1 and 2920–2919 cm^−1	Alkanes	SV of C–H.	[33, 62]
3403.65–3421.19 cm^−1	O-H, of the carboxylic group	SV	[33, 62]
3409.63–3416.57 cm^−1	Alcohol and phenol compound of O–H vibration		[33, 62]
3404.97–3414.65 cm^−1	N–H of amides	Symmetric and asymmetric vibrations	[33, 47, 61]
1297.74–1243.96 cm−1 and 1056–1054 cm^−1	C–N of aliphatic amines	SV	[47, 61]
1413.29–1419.33 cm^−1	C–C of the aromatic ring	SV	[33, 47, 66]
1337–1441 cm^−1	C–H of alkanes group	Bending and rock vibration	[33, 47, 60]
1,526 and 1,528 cm^-1	COO and C=O groups		[47, 61]
571-605 cm^-1	Aromatic compounds	Bending modes	[47]