Table 1. Comparison of the Phosphate Adsorption Capacities of Various Adsorbents.

adsorbents	equilibrium time	adsorption capacity (mg/g)	ref
Fe(III)-doped chitosan	48 h	15.7	(43)
Fe–Mn oxide adsorbent	24 h	18.4	(44)
magnetic illite clay	90 min	5.48	(45)
Fe0/iron oxide-DE	30 min	37.0	(46)
0.05-HIOMD (hydrous iron oxide modified diatomite)	24 h	4.89	(14)
CZD	90 min	13.95	This work