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

Table 2

Use of carbonized/uncarbonized waste cellulosic sorbents in removal of pollutants from wastewater.

S/no.	Sorbents	Particle size	Contact time (mins)	% absorption of physicochemical parameters
				NO3^−	COD	BOD	DO	Chloride	TSS	TDS	EC (U.S./CM)	pH
(1)	Carbonized corn cob	325 μm	60	85.61	78.93	81.48	81.33	80.26	95.14	99.66	89.58	8.0 (5.0)
(2)	Carbonized coconut husk	325 μm		84.59	63.21	68.52	36.67	82.50	97.57	99.91	88.33	7.50 (5.00)
(3)	Carbonized corn cob	625 μm		83.57	52.14	41.05	70.67	64.65	97.48	99.64	87.50	7.50 (5.00)
(4)	Carbonized coconut husk	625 μm		82.14	52.14	49.38	58.00	70.09	97.48	99.80	88.13	7.50 (5.00)
(5)	Uncarbonized corn cob	325 μm		81.02	78.57	75.31	54.00	63.01	97.38	99.37	88.75	8.00 (5.00)
(6)	Uncarbonized coconut husk	325 μm		79.29	62.50	60.49	48.67	83.61	95.19	99.82	88.96	7.50 (5.00)
(7)	Uncarbonized corn cob	625 μm		67.35	38.21	53.70	54.67	50.20	97.33	98.64	87.50	8.00 (5.00)
(8)	Uncarbonized coconut husk	625 μm		99.29	47.14	69.75	44.00	68.01	94.76	97.61	88.13	7.50 (5.00)
(9)	Carbonized corncob	325 μm	120	89.69	79.64	96.30	52.00	84.22	97.57	99.68	90.83	7.80 (5.00)
(10)	Carbonized coconut husk	325 μm		79.49	63.93	69.75	73.33	88.84	95.19	99.93	91.04	8.00 (5.00)
(11)	Carbonized corncob	625 μm		89.50	58.21	51.85	74.67	69.77	97.45	99.68	90.83	7.50 (5.00)
(12)	Carbonized coconut husk	625 μm		89.59	78.57	70.37	60.00	73.18	95.14	99.86	91.25	7.50 (5.00)
(13)	Uncarbonized corn cob	325 μm		80.61	80.36	69.75	34.67	88.76	95.83	99.45	91.46	8.50 (5.00)
(14)	Uncarbonized coconut husk	325 μm		89.39	64.11	56.79	39.33	84.39	97.60	99.88	90.83	8.00 (5.00)
(15)	Uncarbonized corn cob	625 μm		81.02	42.86	66.05	46.67	58.61	97.43	98.98	87.92	7.50 (5.00)
(16)	Uncarbonized coconut husk	625 μm		87.14	56.07	54.94	58.67	73.18	97.38	98.33	88.13	8.00 (5.00)

Value in parenthesis is pH result before treatment.