Table 3. Comparison of Maximum Equilibrium Sorption Capacity of As(III) and As(V) Ions onto Different Recently Reported Sorbents.

	sorption conditions			qm, mg/g
sorbent	T, K	sorbent dose, g/L	initial pH	As(III)	As(V)
layered double hydroxides embedded into alginate/PVA beads5	303	30	8		1.73
calix[4]pyrrole15	298	1	6.3	14.29	15.28
hydrous TiO2 nanoconfined in the pores of anion exchangers21	298	0.5	2		26.6
hydrous Fe2O3 nanoparticles embedded in anion exchangers22	298	0.5	7		31.6
chitin-g-amidoxime35	303	15	6.5	19.72
ion-exchange resins containing N-methyl-d-glucamine39	303	5	6.0		237
			9.0		392
ceramic alumina coated with chitosan40	298	10	4	56.5	96.46
iron-impregnated granular-activated carbon43	298	1	4.8	98.4	125
tetraethylenepentamine-functionalized acrylic fiber44	293	1	7.0	40.5	270.3
silica polyamine composites59	298	10	4		98
			6		56
iron–chitosan composites58	298	5	7	16.15	22.47
MWCNTs@PANI@TiO2 nanocomposites60	298	5	5	57.37
amidoxime resin hosted by mesoporous silica (AMOX3) (this work)	295	1	8	328.7
			5		298.6