New Sustainable Biosorbent Based on Recycled Deoiled Carob Seeds: Optimization of Heavy Metals Remediation

Table 6

Comparison of biosorption capacity (qm) of Raw-seeds, HCl-seeds, and NaOH-seeds for Cd(II) and Co(II) with different other biosorbents.

Adsorbent	qm (mg/g) Cd(II)	qm (mg/g) Co(II)	References
Pine bark	28.00	—	[48]
Peat	22.50	—	[49]
Hazelnut shells	5.42	—	[50]
Waste tea leaves	31.48	—	[51]
Aquatic plant Najas graminea	28.00	20.6	[52]
Black carrot residues	—	5.35	[53]
Coir pith	—	12.82	[54]
J. rubens (red algae)	30.50	32.6	[55]
Saw dust	26.73	—	[56]
Neem bark	25.57	—	[57]
Mangosteen shell	3.15	0.34	[11]
Areca catechu	10.66	—	[58]
	—	27.15	[59]
Rose waste biomass	—	20.63	[60]
	31.35	17.41	[24]
Sargassum wightii	14.90	10.46	[24]
Raw-carob	49.63	30.04	[24]
HCl-carob
NaOH-carob
Raw-seeds	31.35	17.41	Present study
HCl-seeds	14.90	10.46	Present study
NaOH-seeds	49.63	30.04	Present study