Aminopolycarboxylic acid functionalized adsorbents for heavy metals removal from water

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: iminodiace...

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Bibliographic Details
Published in:Water research (Oxford) 2013-09, Vol.47 (14), p.4812-4832
Main Authors: Repo, Eveliina, Warchoł, Jolanta K, Bhatnagar, Amit, Mudhoo, Ackmez, Sillanpää, Mika
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Aminopolycarboxylic acid
Applied sciences
Binding
binding properties
Chelating
Chelating agent
Chelating Agents - chemistry
Contamination
Edetic Acid - chemistry
EDTA (chelating agent)
Environmental technology
Exact sciences and technology
Heavy metals
Imino Acids - chemistry
Isotherms
Metals, Heavy - chemistry
Metals, Heavy - isolation & purification
Miljöteknik
Nitrilotriacetic acid
Nitrilotriacetic Acid - chemistry
Pollution
sorption isotherms
Surface functionalization
Thermodynamic models
Waste Disposal, Fluid - methods
Water Purification - methods
Water treatment
Water treatment and pollution
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Summary: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.
ISSN:0043-1354
1879-2448
1879-2448
DOI:10.1016/j.watres.2013.06.020