Equilibrium Isotherms, Kinetics, and Thermodynamic Mechanisms of a Novel Polyacrylamide-Strychnos potatorum Seed-Derived Activated Carbon Composite for Aqueous Hardness Removal

Table 4

Basic water quality parameters of collected well water samples.

Sample	pH	TDS (mg/L)	Conductivity (μS/cm)
1	6.70 ± 0.14	371.0 ± 2.8	770.0 ± 9.9
2	6.96 ± 0.37	656.0 ± 5.7	1330.0 ± 12.7
3	7.78 ± 0.17	625.0 ± 5.7	1234.0 ± 5.7
4	6.28 ± 0.03	279.5 ± 16.3	587.2 ± 2.5
5	7.33 ± 0.10	479.0 ± 7.1	997.3 ± 2.4
6	7.22 ± 0.17	508.0 ± 7.1	1045.0 ± 7.1