Remediation material and remediation process for sediments
GB Douglas - US Patent 6,350,383, 2002 - Google Patents
(57) ABSTRACT A material and method for removal of environmental oxya nions (and
especially phosphates), the material comprising a substrate such as a clay modi? ed With
complexing elements selected from Group IIIB, Group IVB, and lanthanide ele ments (or a
mixture of such elements). The resultant modi? ed substrate can bind oxyanions and make
them unavail able for utilisation in the environment; in the case of phosphates, by algae and
the like. The method includes forming a capping of material at the sediment/Water interface …
especially phosphates), the material comprising a substrate such as a clay modi? ed With
complexing elements selected from Group IIIB, Group IVB, and lanthanide ele ments (or a
mixture of such elements). The resultant modi? ed substrate can bind oxyanions and make
them unavail able for utilisation in the environment; in the case of phosphates, by algae and
the like. The method includes forming a capping of material at the sediment/Water interface …
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