2007•Transactions of Shenyang Ligong UniversityRequires access

A Study on the Adsorption Behavior of Fulvic Acid for Iron

Yan He

Abstract

The virbrating adsorption method is used to study the adsorption mechanism of Fe3+.Meanwhile,the effects of time,pH and temperature are also investigated.The result shows that,when pH=4.5～6.5,adsorption is larger and stable and does not vary with the variable pH.When pH=5,the amount of absorption becomes bigger with the longer time,and through about 200 minutes the adsorption balance can be obtained.When pH=3,Fe3+ can be easily desorbed from FA,and through about 180 minutes the desorption balance can be obtained.From the isothermal adsorption curve,we can find that the adsorption of Fe3+ on fulvic acid is an endothermic process and also in coincidence with the Langmiur and Freundlich adsorption isotherms model.The adsorption caloric△H is 8.009 1 kJ·mol-1.

About this research paper

What this paper is about

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Adsorption, Freundlich equation, Chemistry, Endothermic process, Isothermal process, Desorption, Inorganic chemistry, Absorption (acoustics)