Phytoproduction of Iron Nanoparticles for Methyl Orange Removal and Its Optimization Studies

Abstract

In the present study, iron nanoparticles have been synthesized using the leaf extract of potential weed Datura inoxia to evaluate their feasibility for methyl orange removal. This method approves that the green synthesis method must be adopted for the more efficient and rapid synthesis of metal nanoparticles. A simple process of bio reduction has been involved, the leaf extract of Datura inoxia used as a precursor for reducing metal iron. The UV- visible spectral analyses for iron nanoparticles have shown a peak at 240 nm wavelength. Spherical shaped iron nanoparticles are formed as shown by transmission electron microscopy. Batch studies were investigated for optimization study of methyl orange removal on selected parameters i.e., pH (1-10), adsorbent dose (0.02-0.14g), initial dye concentration (5-100pm), contact time (15-120 minutes) and temperature (20- 50o C). The result from the present study approves easy and fast dye removal of 98 % with kinetic data following a second order removal rate. The thermodynamics parameters supported the spontaneity with a negative value of ?G i.e., -14.87 kJ mol-1 and exothermic (?H -7.094 kJ mol-1) nature of the reaction. Thus, it can be concluded that the use of Datura inoxia for the phyto production of iron nanoparticles is efficient for various commercial applications in environment sector

Analyzing the Efficiency of Di-FeNPs in Removal of Methyl Orange Dye using Statistical Approach

“…The FeNPs were separated from the solution through centrifugation at 15000 rpm. FeNPs were kept in an incubator at 35 o C (11,12) .…”

“…The batch studies done for optimization of MO dye removal were applied in RSM (12) . pH was set using HCl (0.1N) and NaOH (0.1N).…”

“…The vertical axis of the dendrogram signifies the distance of dissimilarity among the clusters while the horizontal axis represents the clusters. In Figure 4, clusters are grouped as A, B, and C. The experimental runs performed B (1,7,34,29,25,11,2,19,28,5,15,18,20,32,43,23,46,37,10,16,27,9,21,40,36,45,35,36,22) are grouped under cluster A, runs performed under cluster B (8,17,33,39,30,38,24,14,4) while the cluster C includes groups (12,31,44,26,41,13,42). The clustering of the data is grouped according to their initial dye concentration.…”

Carica papaya Leaves Extract for Biosynthesis of Nanoparticles and Their Application

“…The RL values reflect the isotherm type; if RL > 1, the isotherm is unfavourable; if RL = 1, the isotherm is favourable and if RL = 0, the isotherm is irreversible. The current results (RL value) 0.027 indicating that adsorption was favourable [19][20][21].…”

“…9) and are reported in Table 1. The data showed that this adsorption fits the Langmuir isotherm model better than the Freundlich isotherm model [19][20][21].…”