Comunicación oral presentada en la Sesión SSS29
Biogeochemical Interfaces in Soil.-- Congreso celebrado del 19-24 de abril 2009, Viena, Austria.Ferrihydrite (Fh) - even if present at low concentrations - may control the available surface area and therefore,
the behaviour of nutrients and pollutants in soils. Its precipitation often takes place in the presence of dissolved
organic matter (OM). This involves processes such as adsorption, but also coprecipitation, flocculation/coagulation
and poisoning of crystal growth. In this study, we compare coprecipitation of organic matter and ferrihydrite
with pure adsorption of OM on ferrihydrite. We therefore prepared an adsorption series and a coprecipitation
series using (i) water extractable organic matter from a forest topsoil and (ii) sulfite extractable lignin from paper.
Products were investigated by N2-adsorption, XRD and FTIR.Peer reviewe
