Purification of chlorpyriphos organophosphate pesticide from Aquatic environment by using carbon nanoparticles media in a Bit Trap Filter equipped with a bioDrOF

Abstract

Introduction: Organophosphate pesticides are widely used today to increase the yield and
efficiency of agricultural products and to control diseases transmitted by disease-carrying
arthropods. These toxins enter water sources extensively through agricultural wastewater and
cause irreparable damage to water resources. The aim of the present study was to purify the
chlorpyriphos organophosphate pesticide from the Aquatic environment using adsorbents of
carbon nanoparticles in the bioDrOF system. Among the many reasons that make activated
carbon potential adsorbent for the removal of contaminants from the aquatic environment,
can point to the large microscopic structure, the large surface area and chemical nature, the
adsorption efficiency of organic pollutants in the environment also depends on activated
carbon microspores.
Materials & Methods: Sampling was performed over a period of twelve days. The factors
evaluated in this study were to determine the reduction of toxins in the water, including the
amount of pesticide concentration in the water, light absorption and water ph. Nanocarbon
adsorbent was instslled at the entrance of the Bit Trap Filter equipped with bioDrOf. The
adsorption of light was measured by spectrophotometry. The standard pesticide curve used
in this experiment was plotted using different concentration and then measured through this
pesticide in each sample. A digital pH meter was used to measure the pH of the water.
Results: With an initial concentration of 60 mg per one pesticide, the pesticide concentration
at the end of the experiment decreased to 2.07±0.075 and its reduction efficiency was
estimated to be 96.55%. The amount of light absorption at the end of the experiment
decreased to 0.008±0.005, which was estimated to reduce 96.32%. There was an increasing
trend of water pH and at the end of the period it reached 8.25. Significant differences were
found between changes in pesticide concentration and also between changes in light
absorption from the beginning to the end of the experiment (P˂0.05).
Conclusion: It can be concluded based on the present study that activated carbon had a good
performance to create alkaline conditions and remove pesticides at the concentration used by
chloriprifos in this study (60 mg / l). Therefore, due to the effectiveness and low cost of this
method for the treatment of organophosphate Pesticide Chloriprifus and similar compounds
is recommended.