Development of a magnetic coagulant based on Moringa oleifera seed extract for water treatment

In this work, to evaluate the effectiveness of the coagulation/flocculation using a natural coagulant, using Moringa oleifera Lam functionalized with magnetic iron oxide nanoparticles, producing flakes that are attracted by an external magnetic field, thereby allowing a fast settling and separation...

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Bibliographic Details
Published in:Environmental science and pollution research international 2016-04, Vol.23 (8), p.7692-7700
Main Authors: Santos, Tássia R. T., Silva, Marcela F., Nishi, Leticia, Vieira, Angélica M. S., Klein, Márcia R. F., Andrade, Murilo B., Vieira, Marcelo F., Bergamasco, Rosângela
Format: Article
Language:English
Subjects:
Absorption
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Biodegradable materials
Chemical engineering
Coagulants - chemistry
Coagulation
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental science
Flocculation
Iron oxides
Magnetic fields
Magnets - chemistry
Moringa oleifera
Moringa oleifera - chemistry
Nanoparticles
Performance evaluation
Plant Extracts - chemistry
Research Article
Sedimentation & deposition
Seeds
Seeds - chemistry
Studies
Surface water
Turbidity
Waste Water Technology
Water Management
Water Pollution Control
Water Purification - methods
Water treatment
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Summary:In this work, to evaluate the effectiveness of the coagulation/flocculation using a natural coagulant, using Moringa oleifera Lam functionalized with magnetic iron oxide nanoparticles, producing flakes that are attracted by an external magnetic field, thereby allowing a fast settling and separation of the clarified liquid, is proposed. The removal efficiency of the parameters, apparent color, turbidity, and compounds with UV 254nm absorption, was evaluated. The magnetic functionalized M. oleifera Lam coagulant could effectively remove 90 % of turbidity, 85 % of apparent color, and 50 % for the compounds with absorption at UV 254nm , in surface waters under the influence of an external magnetic field within 30 min. It was found that the coagulation/flocculation treatment using magnetic functionalized M. oleifera Lam coagulant was able to reduce the values of the physico-chemical parameters evaluated with reduced settling time.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-015-6029-7