Removal of Natural Organic Matter (NOM) from Aqueous Solutions by Multi-Walled Carbon Nanotube Modification with Magnetic Fe₃O₄ Nanoparticles

Table 1

Physical and chemical characteristics of wetland water.

Parameter	Unit of measure	Value (mean ± SD)
pH	—	8.2 ± 0.4
Color	TCU	140 ± 15
Turbidity	NTU	32 ± 6
Total hardness	mg·L^−1 CaCO3	382 ± 35
Alkalinity	mg·L^−1 CaCO3	229 ± 35
Sulfate	mg·L^−1	27 ± 9
Manganese	mg·L^−1	0.021 ± 0.015
Chloride	mg·L^−1	59 ± 5
Calcium	mg·L^−1	98 ± 10
Magnesium	mg·L^−1	31 ± 4
EC	μS·cm^−1	546 ± 56
Iron	mg·L^−1	0.51 ± 0.1