Effective Removal of Reactive Yellow 145 (RY145) using Biochar Derived from Groundnut Shell

Table 1

FTIR spectra of raw groundnut shell biochar and dye-adsorbed biochar.

Type of vibration	Wavenumber (cm^−1)
	Groundnut shell biochar	RY145-bounded biochar
=C-H bend	755.76	748.69
C–H bend	1374.41	1230.57
C=C stretch, N-H bend	1582.42	1584.35
C≡C stretch	2104.70	2110.07
O-H stretch	2328.90	2393.57
C-H stretch	2921.18	2844.24