Aminopolycarboxylic acid functionalized adsorbents for heavy metals removal from water

Eveliina Repo, Jolanta K. Warchoł, Amit Bhatnagar, Ackmez Mudhoo, Mika Sillanpää

Research output: Contribution to journalReview articlepeer-review

212 Citations (Scopus)

Abstract

Due to the excellent chelating properties of aminopolycarboxylic acid (APCAs), they can be used for the removal of metals from contaminated waters. This paper reviews the research results obtained for both commercial and self-prepared adsorbents functionalized with four most common APCAs: iminodiacetic acid (IDA), nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and diethylenetriaminepentaacetic acid (DTPA). The structural characteristics and unique metal binding properties of these chelating adsorbents are presented. The theory of the adsorption phenomena is discussed based on the kinetics of adsorption, equilibrium adsorption isotherm models, and thermodynamic models. The most important applications of APCA-functionalized adsorbents are also described. APCA-functionalized adsorbents are found to be highly promising materials for metal removal from contaminated waters.

Original languageEnglish
Pages (from-to)4812-4832
Number of pages21
JournalWater Research
Volume47
Issue number14
DOIs
Publication statusPublished - 5 Sept 2013
Externally publishedYes

Keywords

  • Adsorption
  • Aminopolycarboxylic acid
  • Chelating agent
  • Heavy metals
  • Surface functionalization
  • Water treatment

ASJC Scopus subject areas

  • Water Science and Technology
  • Ecological Modeling
  • Pollution
  • Waste Management and Disposal
  • Environmental Engineering
  • Civil and Structural Engineering

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