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TitleCoagulation/flocculation/flotation/nanofiltration processes using Moringa Oleifera as coagulant of Eutrophized river
Author(s)Camacho, Franciele P.
Bongiovani, Milene C.
Silva, Mariana O.
Coldebella, Priscila F.
Amorim, M. T. Pessoa de
Bergamasco, Rosângela
KeywordsMoringa oleifera
Coagulation/flocculation/dissolved air flotation
Drinking water
Issue date2015
PublisherThe Italian Association of Chemical Engineering
JournalChemical Engineering Transactions
CitationCamacho F.P., Bongiovani M.C., Dusserre G., Silva M.O., Coldebella P.F., Bergamasco R., 2015, Coagulation/flocculation/flotation/nanofiltration processes using moringa oleifera as coagulant of eutrophized river, Chemical Engineering Transactions, 43, 1123-1128 DOI: 10.3303/CET1543188
Abstract(s)This study investigated the efficiency of Moringa oleifera (MO) seeds as natural coagulant in coagulation/flocculation/dissolved air flotation (C/F/DAF), followed by nanofiltration (NF) for Microcystis protocystis and microcystin-LR removal. The methodology adopted in this work was performed in two steps: 1) coagulation/flocculation/dissolved air flotation (C/F/DAF) process using the MO extracted in saline solution of potassium chloride (KCl-1M) and sodium chloride (NaCl-1M) in optimum dosage 50 mg·L-1; 2) nanofiltration process using NF90 and NF270 membrane provided Dow Chemical Company®. A working pressure of 8 bar was applied. In all samples were analyzed color, turbidity, pH, cyanobacterial cells count and microcystin concentration. The use of MO seeds as natural coagulant, obtained satisfactory results in the M. protocystis, color and turbidity removal. NF was able to completely remove cyanobacterial cells and microcystins (100 %) from M. protocystis (always under the quantification limit). Therefore, C/F/DAF+NF sequence is a safe barrier against M. protocystis and microcystins in drinking water.
TypeConference paper
AccessOpen access
Appears in Collections:DET/2C2T - Artigos em revistas internacionais com arbitragem científica

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