Cardoso S., Moino B., Costa C., da Silva M., Vieira M., 2016, Evaluation of Metal Affinity of Ag+, Cd2+, Cr3+, Cu2+, Ni2+, Zn2+ and Pb2+ in Residue of Double Alginate Extraction from Sargassum filipendula Seaweed, Chemical Engineering Transactions, 52, 1027-1032.