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|Title: ||Use of hydrophilic polymers from disposable diapers to restore metal contaminated soils|
|Authors: ||Varennes, A.|
|Keywords: ||contaminated soil|
|Issue Date: ||Sep-2010|
|Publisher: ||Cordovil, C. e Ferreira, L.|
|Abstract: ||Hydrophilic polymers swell to form gels that contain many times their dry weight in water. They are marketed as
‘superabsorbent polymers’, with different trade names, for incorporation into soils and substrates. YunKai et al.
(2002) reviewed the effects of these polymers on agricultural soils and crops. Another use of hydrophilic polymers
is in disposable diapers and similar products. A layer of polyacrylate polymer is located between cellulose fibres,
and the whole contained by a plastic cover.
Effects of metals on ecosystems and biological resources are increasingly recognised (Izquierdo et al.,
2005; Pérez-de-Mora et al., 2006). It is too expensive to remove metals from severely contaminated soils, and the
restoration of these sites does not imply a decrease in the total contents of toxic metals, but rather a change in their
availability. Factors that influence the flow of metals from solid phases towards soil solution govern their
bioavailability. In this manuscript, the emphasis is set on the effect of polyacrylate polymers on plant growth and
quality of metal-contaminated soils, deriving from their effect on metal availability.|
|Description: ||RAMIRAN International Conference|
|Appears in Collections:||DQAA - Comunicações em Actas de Conferências|
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