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Dried and ground material of the brown alga Ecklonia maxima and the waste product from the manufacture of Kelpak, a seaweed concentrate used in agriculture, have previously been shown to be effective biosorbents of heavy metals. The recovery of bound cadmium and the subsequent reuse of the biosorbents were investigated. Acids (HCl, HNO 3 and H 2 SO 4 ) and the chloride salts (NaCl and CaCl 2 ) were more effective at desorbing cadmium ions than the carbonate salts (NaHCO 3 and K 2 CO 3 ) and thedoi:10.1515/bot.2002.002 fatcat:3mlebjykxffx3imkeg2mycms7y