This paper focused on the development and application of a novel method for preparation and
characterization of soil coated with plant mediated synthesized AgNPs as a novel nanoadsorbent. A cost
effective and environment friendly technique was developed for green synthesis of silver nanoparticles
from silver nitrate solution through the leaf extract of Azadirachta indica as reducing as well as capping
agent and was then used to synthesized soil–AgNP nanocomposite. Response surface methodology
(RSM) was employed to investigate the effect of different operating parameters on the uptake of crystal
violet (CV) using the novel nanocomposite materials A two level three factor (23
) factorial central
composite design (CCD) was used for the optimization of the process parameters and to evaluate the
effects and interactions of process variables: initial solution pH (4.0–9.0), time requirement (30–90 min),
and agitation speed (80–180 rpm) were studied. Multiple response optimization was applied to the
experimental data to discover the optimal conditions for a set of response, simultaneously, by using a
desirability function. The optimum removal efficiency of the Ag-nanocomposite adsorbent for CV
adsorption was found as 99.995%.