Natural Coagulant Functionalized with Magnetic Nanoparticles Better Treated Dairy Wastewater Compared to Bioremediation
Waste and Biomass Valorization(2024)
Abstract
Several wastewater treatments are available nowadays, and the comparison among them is important when choosing the most suitable one. We investigated two emerging treatments for dairy wastewater, bioremediation, and coagulation/flocculation/sedimentation (C/F/S) using a natural coagulant functionalized with magnetic nanoparticles, applied as a single step and also as a sequence. In the enzymatic treatment, lipases (500 U L−1) were used to hydrolyze fats at 96 h at 37 °C, while C/F/S evaluated different biocoagulant preparations, differing the salt and concentration used but with lower times (< 1 h). Bioremediation was the best one for total organic carbon removal, however, for every other investigated parameter, including the toxicity test with Artemia salina, C/F/S was even better than the sequential process. The results achieved with this treatment include a turbidity removal of 86.8
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Key words
Moringa oleifera,primary treatment,coagulation/flocculation,bioremediation
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