Oil sorption capacity of coir material after sodium hydroxide treatment at different treatment conditions.

Coir sample at treatment conditions	Oil sorption capacity at different sorption time, g g−1
	30 min	60 min	120 min	180 min
NaOH 5%, 60 min	2.22 ± 0.10	2.72 ± 0.11	3.14 ± 0.12	3.53 ± 0.12
NaOH 5%, 120 min	2.03 ± 0.10	2.41 ± 0.10	2.73 ± 0.11	2.92 ± 0.11
NaOH 10%, 60 min	1.94 ± 0.10	2.33 ± 0.10	2.52 ± 0.11	2.94 ± 0.11
NaOH 10%, 120 min	1.81 ± 0.10	2.21 ± 0.10	2.42 ± 0.10	2.73 ± 0.11