Article citationsMore>>

Poudel, B.R., Aryal, R.L., Bhattarai,S., Koirala, A.R., Gautam, S.K., Ghimire, K.N., Pant, B., Park, M., Paudyal, H. and Pokhrel, M.R. (2020) Agro-Waste Derived Biomass Impregnated with TiO2 as a Potential Adsorbent for the Removal of As(III) from Water. Catalysts, 10, 1125.
https://doi.org/10.3390/catal10101125

has been cited by the following article:

• TITLE: Green Synthesis of Magnetite Nanoparticles Using Aqueous Leaves Extracts of Azadirachta indica and Its Application for the Removal of As(V) from Water

  AUTHORS: Kshama Parajuli, Aravind Kumar Sah, Hari Paudyal

  KEYWORDS: Green Synthesis, Magnetite Nanoparticles (MNPs), Azadirachta indica Leaves Extract, As(V) Adsorption

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.10 No.4, November 27, 2020

  ABSTRACT: Because of various disadvantages of chemical synthesis processes, these days people are attracting towards green synthesis processes as it is devoid of toxic by-products, cost-effective and eco-friendly. In this study, a simple green synthesis method is applied for the synthesis of magnetite (Fe3O4) nanoparticles (MNPs) by co-precipitation of FeCl3·6H2O and FeSO4·7H2O in the molar ratio of 2:1 using Azadirachta indica leaves extract under nitrogen environment. FTIR, XRD, SEM etc. were used to characterize the synthesized MNPs. Batch adsorption experiments were carried out to determine adsorption equilibrium of As(V) as a function of pH, adsorbent dose, contact time and different initial concentrations. Kinetics results were best described by pseudo-second order model with rate constant value 0.0052 g/(mg·min). The equilibrium adsorption isotherm was best fitted with Langmuir adsorption isotherm model. The maximum adsorption capacity was found to be 62.89 mg/g at pH 2. MNPs showed a high affinity for As(V) and avoids filtration for solid-liquid separation, thus it would be employed as a promising material for the removal of As(V) from water.