Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass

Table 3

Biosorption capacity of Cr(VI) on different low-cost biosorbents.

Biosorbent	𝑞max (mg g^−1)	Reference
Almond green hull	2.04	[27]
Rice straw	3.15	[28]
Almond shell	3.40	[29]
Groundnut shell	5.88	[29]
Coconut coir	6.30	[30]
Maize cob	13.80	[31]
Sawdust	15.82	[32]
Ficus  carica fiber	19.68	[33]
Pine needles	21.50	[32]
Eucalyptus bark	45.00	[34]
Tea factory waste	54.65	[35]
Tamarind fruit shells	74.62	[36]
Walnut hull	98.13	[37]
Cladodes (Opuntia biomass)	18.51	This study
Ectodermis (Opuntia biomass)	16.43	This study