Open AccessAdsorption interaction model of adsorbents white sand with heavy metals cadmium (Cd2+) naturally
Author(s) -
Bode Haryanto,
FT Saragih,
Warren K Sinaga,
Muhammad Turmuzi,
Erni Misran
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/801/1/012070
Subject(s) - adsorption , kinetics , diffusion , cadmium , chemistry , particle (ecology) , metal ions in aqueous solution , ion , thermodynamics , chemical engineering , inorganic chemistry , organic chemistry , geology , physics , oceanography , quantum mechanics , engineering
This study aimed to analyze the adsorption ability of white sand in the metal ions adsorb cadmium (Cd 2 +) with a concentration of 70 ppm to a solution with a pH of 4.5. The white sand is used is 40 mesh. This research was conducted by batch adsorption operation naturally and adsorption kinetics modeling. Kinetics of adsorption reached equilibrium at time t = 120 minutes with the percentage concentration of adsorbed Cd 2 + 30.7%. In the adsorption kinetics modeling correlation coefficient is almost the same between the equations of first order and second order in the amount of 0.97 and 0.99. The result indicated that the type of interaction Cd 2 + ions on the surface of white sands occur in chemistry and physics. The adsorption kinetics of diffusion modeling of internal and external diffusion of the correlation coefficient has 0.95 and 0.85. From this data it can be seen that in this study is modeling kinetic internal diffusion trend that shows adsorbent particles are inter sand surface area that experienced internal inter-particle pore diffusion.