title: The use of sugar and alcohol industry waste in the adsorption of potentially toxic metals.
abstract: One of the waste products of the industrial process of the sugar and alcohol agribusiness is filter cake (FC). This waste product has high levels of organic matter, mainly proteins and lipids, and is rich in calcium, nitrogen, potassium and phosphorous. In this work we characterized samples of FC from sugar and alcohol industries located in sugarcane-producing regions in Brazil and assessed the adsorption of potentially toxic metals (Cu(II), Cd(II), Pb(II), Ni(II) and Cr(III)) by this waste in mono- and multi-elemental systems, seeking to use FC as an adsorbent in contaminated environments. The characterization of FCs showed significant differences between the samples and the adsorption studies showed retention of over 90% of potentially toxic metals. In a competitive environment (multi-metallic solution), the FC was effective in adsorbing all metals except lead, but less effective compared to the mono-metallic solution. These results show the potential for use of this residue as an adsorbent in contaminated environments.
authors.affiliation: a Post-Graduate Program in Chemistry and Biotechnology , PPGQB/UFAL at the Federal University of Alagoas (UFAL) , Maceió , Brazil.
authors.forename: Oseas Silva
authors.initials: OS
authors.lastname: Santos
authors.affiliation: a Post-Graduate Program in Chemistry and Biotechnology , PPGQB/UFAL at the Federal University of Alagoas (UFAL) , Maceió , Brazil.
authors.forename: André Gustavo Ribeiro
authors.initials: AG
authors.lastname: Mendonça
authors.affiliation: a Post-Graduate Program in Chemistry and Biotechnology , PPGQB/UFAL at the Federal University of Alagoas (UFAL) , Maceió , Brazil.
authors.forename: Josué Carinhanha Caldas
authors.initials: JC
authors.lastname: Santos
authors.affiliation: a Post-Graduate Program in Chemistry and Biotechnology , PPGQB/UFAL at the Federal University of Alagoas (UFAL) , Maceió , Brazil.
authors.forename: Amanda Paulina Bezerra
authors.initials: AP
authors.lastname: Silva
authors.affiliation: b Environmental Analytical Chemistry Laboratory, Department of Chemistry, Center of Exact Sciences and Technology , Federal University of Sergipe (UFS) , São Cristovão-SE 49100-000 , Brazil.
authors.forename: Silvanio Silverio Lopes
authors.initials: SS
authors.lastname: Costa
authors.affiliation: c Post-Graduate Program in Biotechnology and Environmental Monitoring , PPGBMA at the Federal University of São Carlos (UFSCar) , Sorocaba , Brazil.
authors.forename: Luciana Camargo
authors.initials: LC
authors.lastname: Oliveira
authors.affiliation: c Post-Graduate Program in Biotechnology and Environmental Monitoring , PPGBMA at the Federal University of São Carlos (UFSCar) , Sorocaba , Brazil.
authors.forename: Janaina Braga
authors.initials: JB
authors.lastname: Carmo
authors.affiliation: a Post-Graduate Program in Chemistry and Biotechnology , PPGQB/UFAL at the Federal University of Alagoas (UFAL) , Maceió , Brazil.
authors.forename: Wander Gustavo
authors.initials: WG
authors.lastname: Botero
mesh_terms: D000327:Adsorption; D001938:Brazil; D002241:Carbohydrates; D000431:Ethanol; D005374:Filtration; D005525:Food-Processing Industry; D007220:Industrial Waste / Q000032:analysis*; D019216:Metals, Heavy / Q000737:chemistry*; D018505:Waste Management / Q000295:instrumentation / Q000379:methods*; D014866:Waste Products / Q000032:analysis*
chemical_list: D002241:Carbohydrates; D007220:Industrial Waste; D019216:Metals, Heavy; D014866:Waste Products; D000431:Ethanol
keywords: adsorption process; filter cake; humic substances; metals; sugar and alcohol industry waste