tTannin rigid foams are presented as novel adsorbents for wastewater remediation. Although these mate-rials are known since long time ago, this is one of the newest applications in environmental technology.The efficiency of the different combinations of reagents in the foam synthesis were studied by usingResponse Surface Methodology, and the optimum category was subsequently tested on dye, surfactantand pharmaceutical removal. The results are promising for the three types of pollutant. Structural differ-ences based on FTIR, Raman spectroscopy and other superficial characterization techniques confirmedthe intrinsic adsorption benefits of this optimum category if compared with other tannin rigid foams.Optimum tannin rigid foam was obtained with 0.03 g of furfuryl alcohol, 0.11 g of formaldehyde, 0.25 g ofdiethyl ether and 0.20 g of p-toluensulfonic acid per g of Weibull Black tannin extract. With this combina-tion of reagents, up to 250 mg g−1of Methylene Blue removal was reached and a significant eliminationof several dyes and surfactants was feasible.