Interaction of Polybrominated Diphenyl Ethers and Aerobic Granular Sludge: Biosorption and Microbial Degradation

Table 3

Band assignments for FTIR spectral features.

Wavenumber (cm^−1)	Assignment and vibration type	Surface functional groups
3200–3600	–OH and –NH overlapping stretching vibration	Polymeric compounds and amine
3400–3550	–OH sharp stretching vibration	Polymeric compounds and amine
2925	–CH2 asymmetric stretching vibration
2852	–CH2 symmetric stretching vibration
2471	–OH stretching vibration
1638	C=O and C–N (amide I) stretching vibration	Protein (peptidic bond)
1550–1450	C–N stretching vibration and N–H (amide II) deformation vibration	Protein
	C–OH and –CH3, –CH2 stretching vibration
1483	C–C stretching vibration
1385	–COO^− stretching vibration	Amino acids
1066	C–N stretching	Carbohydrates and nucleic acids
1030	C–OH, –CH2 stretching vibration	Phosphorylated proteins and associated alcohols
1200–1000	C–O stretching	Carbohydrates and nucleic acids
<1000	“Fingerprint” zone	Phosphate or sulphur functional groups
900–600	Ring vibration	Aromatic amino acids and nucleotides.
874, 763	C–C in plane bending
698	Ring in plane bending