In various embodiments, the present disclosure provides filtering
compositions, their method of production, and methods for their use. In
specific implementations, the filtering composition includes lanthanum
and has a surface area of at least about 125 g/m.sup.2. In more specific
examples, the filtering composition is free-flowing or has a moisture
content between about 10 wt % about 30 wt %. Particular compositions
include at least one of iron or magnesium. Some embodiments of the
present disclosure provide filtering compositions that are resilient or
leach-resistant.