Evaluation of Phytoremediation Potential of Vetiver Grass (Chrysopogon zizanioides (L.) Roberty) for Wastewater Treatment

Table 2

Results as soon as synthetic wastewater is added to each of the test containers.

The average of the measured parameter	Day	T (^oC)	pH	EC (μs/cm)	TDS (mg/l)	DO (mg/l)	TN (mg/l)	TP (mg/l)	COD (mg/l)
Container a dilute sewage x, aerated	0 (before phytoremediation)	24.2	7.02	554	350	1.7	34.32	0.47	344
	7	24.9	7.9	488	300	4.5	16.21	0.3	99
	10	26.5	8.01	488	300	4.7	13.49	0.25	28
	4	25.3	7.86	478	290	5.1	7.11	0.23	20
	19	25.4	7.9	467	280	5.9	5.2	0.19	16
	24	25.9	8.1	458	270	5.4	4.1	0.17	12
	31	26.2	8.15	446	260	5.9	3.5	0.16	11
Container b diluted wastewater x nonaerated	0 (before phytoremediation)	24.2	7.02	554	350	1.7	34.32	0.47	344
	7	24.8	6.86	489	310	1.3	22.84	0.45	166
	10	26.6	7.03	484	300	0.9	18.5	0.4	84
	14	25	7.17	464	290	1.2	16.25	0.38	46
	19	25.2	7.1	427.4	270	1.1	16	0.34	35
	24	25.8	7.2	395.7	250	1.2	15.5	0.32	27
	31	26	7.1	379.9	240	1.2	15.3	0.27	24
Container c concentrated wastewater 5x nonaerated	0 (before phytoremediation)	24.3	6.89	1270	840	0.5	117.8	1.92	760
	7	24.8	7.03	1529	1020	0.4	138.41	2.83	622
	10	25.9	7.15	1623	1030	0.4	171.46	3.15	642
	14	23.4	7.2	1540	1050	0.5	183.4	3.41	572
	19	23.7	7.1	1588.96	1060	0.45	188	3.7	550
	24	23.9	6.9	1633.93	1090	0.35	192	3.9	520
	31	24	6.9	1678.90	1120	0.38	195	3.95	510