Ultrasonic Functionalized Egg Shell Powder for the Adsorption of Cationic Dye: Equilibrium and Kinetic Studies

Table 2

Assessment of value of UAESP with the previously used materials for MG dye adsorption.

S. no.	Adsorbent	Optimum conditions			Best fitted model	Adsorption capacity () (mg/g)	References
		Time (min)	Dosage (g/L)	Temperature (K)
1	CNF aerogel	40	2.5	—	Langmuir	212.7	[45]
2	Opuntia ficusindica	120	4.0	298	Langmuir	200.1	[46]
3	Wood apple shell (WAS)	210	0.05	299	Langmuir	80.645	[21]
4	Ultrasonic-assisted egg shell powder (UAESP)	90	1.5	303	Freundlich	64.58	This study
5	Functionalized Zea Mays Cob (FZMC)	120	—	298	Freundlich	64.52	[47]
6	Zingiber officinale (ginger) leaves	120	0.4	—	Langmuir	48.91	[48]
7	Sulfur-treated tapioca peel biochar	120	2.0	—	Langmuir	30.18	[49]
8	Cd(OH)2-NW-AC	50	0.6	298	Langmuir	19.0	[50]
9	Chitosan-ZnO composite	180	6.0	293	Langmuir	11.0	[51]
10	Pinus patula biochar	60	6.0	—	—	9.8	[52]
11	Brewers’ spent grain (BSG)	20	6.0	296	Langmuir	2.55	[53]