ประสิทธิภาพการดูดซับนิกเกิลของดินเหนียวและดินทรายปนทรายแป้ง

Abstract

Abstract

Nickel is a common heavy metalthat is harmful to human and animals. It contaminates in waste water which is discharged from industries and communities. This article studies the adsorption of nickel by clay and silty sand which found in the northeastern part of Thailand. Batch test was used to investigate the equilibrium time, adsorption isotherm, temperature effect and the influence of the additional materials (lime and rice husk ash). The results were found that the adsorption of Nickel by clay and silty sandreaches the equilibrium condition within 1 hour. The adsorption capacity of clay was better than the adsorption capacity of silty sand. The sorption behavior can well be described by Frundlich Model. Temperature also plays an important role in the sorption capacity. In this study, mixing soil withlime and rice husk ash can increases the ability of nickel inan adsorption phenomena.