Abstract
With the aim of removing binary metal ions from aqueous solutions, the adsorption characteristics of sawdust modified with citric acid are investigated using adsorption kinetics and isotherms in both an experiment and a numerical simulation. The adsorption of metal ions is characterized by the competitive adsorption in binary metal ion systems that results from the stability constants between metal ions and citrate in the modified sawdust. These findings suggest that competitive adsorption and the affinities of the metal ion adsorbents play important roles in the removal of metal ions and that the numerical simulation can predict the adsorption characteristics of the modified sawdust.
| Original language | English |
|---|---|
| Pages (from-to) | 276-285 |
| Number of pages | 10 |
| Journal | Separation Science and Technology (Philadelphia) |
| Volume | 50 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2015 Jan 22 |
Bibliographical note
Funding Information:This work was partially supported by the KIST Institutional Program (Project No. 2Z04222) and by the Korea Environment Industry and Technology Institute (KEITI) through the Geo-Advanced Innovation Action Program (2013000540005).
Publisher Copyright:
©, Taylor & Francis Group, LLC.
Keywords
- biosorption
- competitive adsorption
- equilibrium modeling
- heavy metals
- stability constant
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- Process Chemistry and Technology
- Filtration and Separation