Synthesis and Physicochemical Characterization of Anion Exchanger Based on Green Modified Bottle Gourd Shell

Table 3

Biosorption efficiency of phosphate and nitrate by cationic biosorbents based on raw (LVS) and alkaline-modified (MLV) bottle gourd shell.

Biosorbent	Phosphates (10 mg P·dm^−3)		Nitrates (10 mg N·dm^−3)
	(mg P·g^−1)	(%)	(mg N·g^−1)	(%)
LVS biomass	0.04 ± 0.02	0.8	0.03 ± 0.01	0.6
MLV precursor	0.05 ± 0.03	1.0	0.04 ± 0.02	0.8
CARLVS	3.27 ± 0.11	65.4	2.77 ± 0.06	55.4
CALV	4.41 ± 0.13	88.2	3.95 ± 0.10	79.0

: equilibrium biosorption capacity (mean of three consecutive determinations).