Experimental Study and Numerical Solution of Poly Acrylic Acid Supported Magnetite Nanoparticles Transport in a One-Dimensional Porous Media

Table 3

The values of particles sedimentation rate coefficient (𝐾_𝑑) and hydrodynamic dispersion coefficient (𝐷) calculated for each experiment.

Test number	Concentration (ppm)	Density of slurry (g/cm^3)	𝜀	Hydraulic gradients	𝑈0 (m/s)	𝐶/𝐶0	𝐾𝑑 (1/s)	𝐷 (m^2/s)
1	20	1.005	0.3	0.125	0.000800	0.88	0.000256	9.000×10^−7
2	20	1.005	0.3	0.375	0.001950	0.90	0.000514	1.020×10^−6
3	20	1.005	0.3	0.625	0.002650	0.95	0.000340	2.500×10^−5
4	100	1.021	0.3	0.125	0.000253	0.93	0.000046	9.250×10^−8
5	100	1.021	0.3	0.375	0.000400	0.95	0.000051	1.000×10^−6
6	100	1.021	0.3	0.625	0.001000	0.97	0.000076	2.000×10^−6
7	500	1.045	0.3	0.125	0.000172	0.90	0.000045	7.500×10^−7
8	500	1.045	0.3	0.375	0.000340	0.88	0.000109	1.500×10^−7
9	500	1.045	0.3	0.625	0.000480	0.92	0.000100	1.750×10^−6