Removal of Isolan Dark Blue 2SGL-01 from aqueous solutions onto calcined and uncalcined (Mg-Zn)/(Al-Fe)-(CO3)/Cl layered double hydroxides

Table 6 Desorption study of IDB-loaded onto LDHs and CLDHs at 30 and 50 °C

Eluent	Concentration of eluent, mol L⁻¹	Eluted IDB (%) at 30 °C				Eluted IDB (%) at 50 °C
Eluent		LDH21	LDH22	CLDH21	CLDH22	LDH21	LDH22	CLDH21	CLDH22
NaCl	0.1	6.6	2.9	2.6	0.9	18	9.2	6.6	1.7
NaOH	0.1	17	10	4.0	1.9	29	15	10	4.3
Na₂CO₃	0.1	26	17	8.8	3.0	36	22	15	7.1
Na₂CO₃	1.0	39	22	15	5.1	50	25	27	10

ISSN: 2468-2039