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

Table 3

Elemental composition of Raw-seeds, HCl-seeds, and NaOH-seeds.

Element	Raw-seeds		HCl-seeds		NaOH-seeds
	Weight %	Atomic %	Weight %	Atomic %	Weight %	Atomic %
C	56.13	65.81	54.71	61.72	48.32	58.11
O	35.31	31.09	45.10	38.19	40.35	36.43
Na	—	—	—	—	4.13	2.59
Mg	—	—	—	—	0.90	0.53
Al	—	—	—	—	0.34	0.18
P	0.23	0.11	0.10	0.05	—	—
S	0.23	0.10	0.07	0.03	—	—
Cl	0.21	0.08	0.02	0.01	—	—
K	4.94	1.78	—	—	0.17	0.17
Ca	2.95	1.04	—	—	1.98	1.98