Removal of chromium from wastewater by swine hair residues applied as a putative biofilter
2019
de Paris Júnior, Orlando | Scapini, Thamarys | Camargo, Aline Frumi | Venturin, Bruno | Dalastra, Caroline | Kubeneck, Simone | Czapela, Fabiane Fernanda | Preczeski, Karina P. | Stefanski, Fábio Spitza | Korf, Eduardo Pavan | Valério, Alexsandra | Di Luccio, Marco | Mossi, Altemir José | Fongaro, Gislaine | Treichel, Helen
Swine production chain generates residues with potential application in environmental processes. This study aimed at the use of swine hair as a potential biofilter for hexavalent chromium (Cr(VI)) removal from wastewater of tannery industry. The hair was pretreated using H₂O₂ in alkaline medium, and statistical analysis was carried out to evaluate the hair degradation, as well the Cr(VI) removal by the potential pretreated biofilter. The results showed 99% of Cr(VI) removal in 105 min of treatment in large pH range (1–10). Treated and untreated effluents were submitted to cytotoxicity study using vegetable and animal cells, demonstrating a significant reduction on toxicity to both cells. Therefore, swine hair demonstrated to be a promising residue for heavy metal removal on the perspective of an environmentally friendly technique.
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