Removal of malachite green dye (MG+
), organic pollutant, from wastewater was investigated by photocatalytic method using MnO,
NiO and mixed MnO – NiO nano particles (NP’s) prepared from different organic precursors as catalyst. The as – prepared nano oxides
were characterized by different physicochemical techniques viz, thermal analysis, FTIR, HRTEM and X-Ray diffraction methods then their
antibacterial and anticancer effects against Breast carcinoma MCF-7 cell line were studied. Three types of oxide NP’s having sizes near
to 50 nm were used to find the optimum conditions for photocatalytic degradation and removal of MG+
from wastewater by studying
the effect of various parameters on the degradation rate including the catalyst concentration, process duration as well as the catalytic
effectiveness of the oxide NP’s. In addition, the effect of UV light sources on the degradation process was studied. The process performed
with the nanostructured oxides catalyst was very successfully allowing best degradation of organic compounds. The sorption kinetic and
thermodynamic modeling was also studied