Abstract:
Environmental health problems caused by heavy metals are enumerous of which cancer is leading.
The getting rid of heavy metals by the use of inexpensive technologies have intensively searched
for and is still ongoing while focussing at various metals. The elimination of them from wastewater
using plant-derived nanoparticles is the most promising technology that has been thoroughly
explored because of its easy application, broad applicability, high removal. The study described here
sought to determine how well plant-derived nanoparticles removed specific heavy metals from
wastewater.
After taking into account the heavy elements such as lead, cadmium, chromium, iron, and zinc, an
extract of M. subsessile and G. fruticosus was made by maceration in the mixture of Methanol:
Dichloromethane 1:1. The CuO-nanoparticles and Ag-nanoparticles were synthesized and
charactered by using the Fourier Transform Infra-Red (FTIR) spectroscopy technique. Heavy metals
removal efficiency was assessed by using Microwave Plasma Atomic Emission Spectroscopy (MP AES).
According to experimental findings, the effectiveness of removing heavy metals in wastewater is
influenced by a type of nanoparticles, pH, adsorbent dose, plant derailing the nanoparticle, and
contact time. The NPs with M. subsessile have a higher adsorption capability to heavy metals than
the NPs with G. fruticosus, which means they remove more heavy metals from wastewater. This
may indicate that the NPs derived from M. subsessile extract are very porous, characterized with
larger surface area, and feature an active functional group that is involved to trap the heavy metal
elements
As contact duration increased, more heavy metals were removed because the nanoparticles had more
opportunity to adsorb to the metal. The majority of heavy metals were completely eliminated after
24 h, according to this research. This study shows that metal ion adsorption increases significantly
with the pH from low to high. Furthermore, CuO-NP was found to be an effective nano-sorbent,
reducing the levels of Cd, Fe, Cr (VI), Co, Pb, and Fe in wastewater
