Abstract
Currently, one of the most serious environmental problems society is facing is water contamination by oil spills. The use of sorbents from agricultural residues has been considered a very promising approach for the effective treatment of oil contaminated water. Therefore, this work investigates the use of biosorbents obtained from cupuaçu shell (Bio-CP) and sacha inchi shell (Bio-SI) in the oil removal process. The characterization of adsorbents was carried out by FTIR, XRF, and TGA. Adsorption tests were carried out in a finite bath using 0.1 g of biosorbent and diesel/Rio Negro water emulsions at 400 mg.L-1 in a contact time of 60 minutes. The results show that Bio-CP has a higher oil adsorption capacity (190.8 mg.g-1) compared to Bio-SI (174.93 mg.g-1), and better oil removal, 95.4%, if compared to 87.47% for Bio-SI. The results indicate that cupuaçu and sacha inchi shells can be effective in the production of biosorbents to remove diesel from contaminated water.
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