Table 2. Adsorption capacities of As (III) with iron oxide for different supporting materials.

Media support	Concentration range (mg/L)	pH	Adsorption capacity (mg/g)	References
glass fiber	0.144–17.5	7	11	[52]
carbon nanotubes	0.1	4	1.723	[16]
activated carbon	20–22	6	51.3	[17]
geopolymers	0–0.12	7.6	0.95	[53]
activated alumina	1.6–2.3	12	0.378	[19]
3D-printed PLA	0.4–20	8	129.87	This study