Application of Chemically Modified and Unmodified Waste Biological Sorbents in Treatment of Wastewater

Table 3

Use of carbonized/uncarbonized waste protein sorbents in removal of heavy metals from wastewater.

S/no.	Sorbents	Particle size	Contact time (mins)	% absorption of heavy metals
				Pb	Mn	Ni	Cr
(1)	Carbonized goat hair	325 μm	60	87.05	80.84	94.62	81.89
(2)	Carbonized feather	325 μm		87.05	83.58	90.51	92.83
(3)	Carbonized goat hair	625 μm		65.88	78.53	77.18	58.87
(4)	Carbonized feather	625 μm		78.82	79.79	73.33	73.58
(5)	Uncarbonized goat hair	325 μm		76.00	76.21	90.51	78.11
(6)	Uncarbonized feather	325 μm		81.18	74.32	78.97	83.77
(7)	Uncarbonized goat hair	625 μm		77.65	63.16	70.77	61.51
(8)	Uncarbonized feather	625 μm		75.29	68.21	73.85	52.83
(9)	Carbonized goat hair	325 μm	120	85.41	77.26	97.95	84.15
(10)	Carbonized feather	325 μm		91.53	82.74	94.36	89.06
(11)	Carbonized goat hair	625 μm		71.76	80.21	76.64	66.79
(12)	Carbonized feather	625 μm		89.18	80.84	74.87	76.60
(13)	Uncarbonized goat hair	325 μm		75.53	83.58	90.26	85.66
(14)	Uncarbonized feather	325 μm		90.12	81.26	77.69	92.08
(15)	Uncarbonized goat hair	625 μm		65.18	68.84	74.87	63.77
(16)	Uncarbonized feather	625 μm		79.76	68.63	74.62	63.02