The intrinsic technological characteristics depend on the forming process and the application for which the
materials are intended. A clay raw material (75 mass%) which is rich in melting oxides and waste peanut shells
(25 mass%) were used to manufacture porous ceramics for the removal of arsenic from borehole water in Burkina
Faso. A borehole water analysis shows a concentration of arsernic of 39 μg L− 1 above the WHO standard. The
porous ceramics were obtained from samples shaped by unidirectionnal pressing and after sintering at 900 ◦C
(MKOR9) or 1100 ◦C (MKOR11). Unlike MKOR9 materials, MKOR11 materials consist of 27 % mullite phases.
MKOR9 and MKOR11 porous materials presented a diametrical compression stress to rupture greater than 0.15
MPa, as recommended in the literature for ceramic filters. The obtained permeability value of MKOR11 ceramic
materials (53,802 L/h.m2.bar) is much higher than that of MKOR9 (18596 L/h m2 bar), although its open
porosity (61 %) is lower than that of MKOR9 materials (65 %). The removal rate obtained with MKOR9 is 24 %
compared to 95 % for MKOR11. MKOR11 filters almost completely reduce arsenic concentration below the WHO
limit values, which is not the case for MKOR9 materials. The adsorption kinetics and thermodynamic parameters
showed that the adsorption process is the chemisorption. This work has shown that MKOR11 ceramic filters have
a very impressive effectiveness, and they could be manufactured for the benefit of the remote population

Clay, Porous ceramics, Mullite, Permeability, Arsenic removal, Adsorption, Filtration