| http://www.w3.org/ns/prov#value | - In a preferred embodiment of the present invention the adsorbent particle has a mean particle size of at most 150 ??m, particularly at most 120 ??m, more particularly at most 100 ??m, even more particularly at most 90 ??m, even more particularly at most 80 ??m, even more particularly at most 70 ??m.
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