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Macroalgae as lead trapping agents in industrial effluents - a factorial design analysis


Author(s) : L. da Silva Valdinete de Barros Neto Benأ­cio Fernanda Pimentel M. da Silva Josأ© E., 
Publisher : N/A
Publication Date : 2001
ISSN : N/A
Abstract : A two-level factorial design was employed to analyze the influence of agitation, contact time, amount of algae and type of pretreatment on heavy metal removal by Arribadas algae, in a batch system consisting of a synthetic solution simulating a typical effluent from battery manufacturing processes. Dried, ground and sieved 4 g algae samples were able to remove 99 % lead from 100 mL samples of synthetic effluent. Maximum removals for zinc and iron were 37 % and 80 %, respectively. Lead removal using this method is potentially useful for large-scale industrial applications, because Arribadas algae are cheap, abundant, naturally occurring waste materials.,