Removal ofAnabaena flos-aquaein water treatment process usingMoringa oleiferaand assessment of fatty acid profile of generated sludge
| Autor: | Milene Carvalho Bongiovani, Letícia Nishi, Rosângela Bergamasco, Priscila Ferri Coldebella, Marcela Fernandes Silva, Lívia de Oliveira Ruiz Moreti, Aloisio Henrique Pereira de Souza, Makoto Matsushita, Franciele Pereira Camacho, Aline Kirie Gohara |
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| Rok vydání: | 2015 |
| Předmět: |
Flocculation
020209 energy Dissolved air flotation 02 engineering and technology 010501 environmental sciences Biology 01 natural sciences Water Purification Palmitic acid Moringa chemistry.chemical_compound Botany 0202 electrical engineering electronic engineering information engineering Environmental Chemistry Dolichospermum flos-aquae Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology chemistry.chemical_classification Chromatography Sewage Anabaena Fatty Acids Fatty acid General Medicine biology.organism_classification Oleic acid chemistry Brassicaceae Seeds Water treatment Water Microbiology Oleic Acid |
| Zdroj: | Environmental Technology. 37:1408-1417 |
| ISSN: | 1479-487X 0959-3330 |
| Popis: | This study aimed to evaluate the efficiency of the coagulation/flocculation/dissolved air flotation (C/F/DAF) process using the coagulant Moringa oleifera (MO) seed powder, and to analyse the profile of fatty acids present in the generated sludge after treatment. For the tests, deionized water artificially contaminated with cell cultures of Anabaena flos-aquae was used, with a cell density in the order of 10(4) cells mL(-1). C/F/DAF tests were conducted using 'Flotest' equipment. For fatty acid profile analyses, a gas chromatograph equipped with a flame ionization detector was used. It was seen that the optimal dosage (100 mg L(-1)) of MO used in the C/F/DAF process was efficient at removing nearly all A. flos-aquae cells (96.4%). The sludge obtained after treatment contained oleic acid (61.7%) and palmitic acid (10.8%). Thus, a water treatment process using C/F/DAF linked to integral MO powder seed was found to be efficient in removing cells of cyanobacteria, and produced a sludge rich in oleic acid that is a precursor favourable for obtaining quality biodiesel, thus becoming an alternative application for the recycling of such biomass. |
| Databáze: | OpenAIRE |
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