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

Abstract

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 UV254nm 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 UV254nm, 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.

Protein fractionation of Moringa oleifera Lam. seeds and functionalization with magnetic particles for the treatment of reactive black 5 solution

“…Even with removal efficiency in the absence of magnetic nanoparticles, Glo Fe provided better results, reaching 93 % RB5 removal and faster sedimentation process. Santos et al showed that the use of coagulants with magnetic characteristics leads to the formation of magnetic flakes that can be attracted by magnetic fields, accelerating the sedimentation process and the removal of physicochemical parameters from water. This behaviour arises from the magnetic properties of the nanoparticles, resulting in the incorporation/agglutination of water contaminants.…”

“…Moringa seed protein fractions were sonicated with different amounts of nanoparticles for 5 min and homogenized at 25 °C for 2 h, according to the methodology adapted from Santos et al Protein fractions functionalized with nanoparticles were evaluated in relation to their coagulation/flocculation potential. The coagulants were prepared with distilled water at a concentration of 1 % and designated as Alb Fe (functionalized albumin fraction) and Glo Fe (functionalized globulin fraction).…”

“…A number of studies have demonstrated the high coagulation capacity of this plant in wastewater treatment . Moringa extracts can also be functionalized with iron nanoparticles to increase the efficiency of these treatments by applying a magnetic field during sedimentation to accelerate the clarification process …”

Effects of using Tamarindus indica Seeds as a natural coagulant aid in landfill leachate treatment

“…On the contrary, natural coagulants are found to produce a relatively low sludge volume and are safe to humans compared with inorganic coagulants (Madhukar and Yogesh, 2013). Although natural coagulants have been widely applied in wastewater treatment (Santos et al, 2016;Kos, 2016), their application in landfill leachate treatment is limited despite their abundance, relatively low cost, and being environmentally friendly .…”

Moringa Oleifera - A Never Die Tree: An Overview

“…It has been planned that water treated with seeds of MO plant have numerous advantages when compared with different coagulants such as does not influence the pH of the water, low cost, produces least sludge as contrast with alum [101,105,106], successful in expelling suspended material [60,105,107], hard water softener [108], and more affordable biosorber of cadmium from aqueous medium [109]. MO functionalized with magnetic nanoparticles, for example, iron oxide was discovered useful in surface water treatment by bringing down settling time [110].…”