id	keyword
ap-4910	adsorption
ap-4910	dye
ap-4910	adsorbent
ap-4910	ceac
ap-4910	anthill
ap-4910	model
ap-4910	calcination
ap-4910	composite
ap-4910	eggshell
ap-4910	solution
ap-4910	journal
ap-4910	order
ap-4910	design
ap-4910	kinetics