EUBCE 2026 - Nikolaus MANOLIKAKES - Agglomeration of Biochar and Iron(III)-hydroxide to Composite Agglomerates for Use as Filter material for Biogas Purification

Agglomeration of Biochar and Iron(III)-hydroxide to Composite Agglomerates for Use as Filter material for Biogas Purification

Short Introductive summary

The use of biochar in biogas processes is frequently investigated in recent studies. For enhancing the performance of biochar it is possible to combine it with iron(III)-hydroxide. For better physical properties and handling it is necessary to combine these two components into a homogeneous product. With the addition of a binder it is possible to agglomerate these two components to pellets or granulates which show good mechanical properties, but with drastic reduction of the BET-surface. A crucial step is the conditioning before the composite pelleting, because of the contradictory properties of biochar and iron(III)-hydroxide, but the type of binder has a lower relevance. For composite granulation less binder is required and the contradictory properties of the raw materials are not as critical. Furthermore, a bigger BET-surface is achieved when granulating, which can result in better application performances.

N. Manolikakes, Deutsches Biomasseforschungszentrum, Leipzig, GERMANY
C. Kirsten, Deutsches Biomasseforschungszentrum, Leipzig, GERMANY