Table 3 Results of Langmuir separation factor (RL).

From: Experimental measurement and modeling of asphaltene adsorption onto iron oxide and lime nanoparticles in the presence and absence of water

Asphaltene

Magnetite NPs

Hematite NPs

Calcite NPs

Dolomite NPs

C0 100 ppm

C0 200 ppm

C0 500 ppm

C0 1000 ppm

C0 100 ppm

C0 200 ppm

C0 500 ppm

C0 1000 ppm

C0 100 ppm

C0 200 ppm

C0 500 ppm

C0 1000 ppm

C0 100 ppm

C0 200 ppm

C0 500 ppm

C0 1000 ppm

As-1

0.814

0.686

0.467

0.304

0.822

0.698

0.481

0.316

0.870

0.770

0.573

0.401

0.874

0.777

0.582

0.410

As-2

0.8854

0.794

0.607

0.436

0.837

0.720

0.507

0.339

0.882

0.790

0.601

0.429

0.856

0.749

0.544

0.374

As-3

0.916

0.846

0.687

0.523

0.934

0.876

0.738

0.586

0.923

0.858

0.708

0.548

0.992

0.984

0.962

0.927

As-4

0.908

0.831

0.663

0.496

0.915

0.844

0.685

0.520

0.927

0.863

0.717

0.559

0.953

0.911

0.803

0.671

As-5

0.927

0.864

0.719

0.561

0.968

0.938

0.859

0.753

0.936

0.881

0.748

0.597

0.986

0.973

0.935

0.878