Eco-Friendly Photocatalyst Derived from Egg Shell Waste for Dye Degradation

Table 3

Comparison of egg shell powder-, egg shell membrane-, and egg shell powder-based composite materials for dye adsorption.

Adsorbent	Dye	Adsorption capacity (mg/g)	Reference
Egg shell powder	Methylene blue	0.87	[35]
Egg shell powder	Methylene blue	0.8	[45]
Egg shell powder (RESP)	Methylene blue	0.23	This study
Egg shell powder (CESP)	Methylene blue	11.02	This study
Egg shell powder	Congo red	95.25	[33]
Egg shell powder	Rhodamine B	0.14	[34]
Egg shell powder	Rhodamine B	1.99601	[36]
Egg shell powder	Congo red	1.22	[35]
Egg shell powder	Bromophenol blue	0.04	[35]
Egg shell powder	Malachite green	2.13	[35]
Egg shell powder	Murexide	1.03092	[36]
Egg shell powder	Eriochrome black T	1.56494	[36]
Egg shell powder	Reactive red 123 dye (RR123)	1.26	[37]
Egg shell membrane and egg shell powder	C.I. Reactive yellow 205, a sulphonated reactive azo dye,	48.78	[38]
Egg shell membrane and egg shell powder	Rhodamine B	0.72	[34]
Egg shell membrane	Rhodamine B	14.4	[34]
Egg shell powder/TiO2(TiO2/CES)	Acid red nylon 57 (AN57)	220.2	[39]
Egg shell powder/polymer mixture of alginate and polyvinyl alcohol (biocomposite adsorbent)	C.I. Remazol reactive red 198	46.9	[40]
Calcined eggshell powder/anthill clay composite	Methylene blue	43.46	[41]
CaO photocatalyst	Indigo carmine dye	∼100% dye degradation (approx. 1 hr exposure)	[44]
CESP photocatalyst	Methylene blue	80% degradation (approx. 1 hr exposure)	This study