laboratory degradation studies were performed in water at ph 4.0, 7.0 and 9.2 using benthiocarb (saturn 50 ec) formulation at the rates of 1.0 (t1) and 2.0 (t2) î¼g/ml. water samples collected on 0 (2h),3,7,15,30,45,60 and 90 days after treatments were processed for residue analysis of benthiocarb by gc-npd capillary system. in 60 days, dissipation was 92.82-93.81 % at ph 4.0, 89.12-90.63 % at ...

Overuse of antibiotics has resulted in widespread contamination the environment and triggered antibiotic resistance pathogenic bacteria. Conventional wastewater treatment plants (WWTPs) are not equipped to remove antibiotics. Effluents from WWTPs usually primary source aquatic environments. There is an urgent need for cost-effective, environment-friendly technologies address this issue. Along w...

we introduce and discuss the homotopy perturbation method, the adomian decomposition method and the variational iteration method for solving the stefan problem with kinetics. then, we give an example of the stefan problem with  kinetics and solve it by these methods.

The kinetics of toluene hydrogenation over Ni-supported catalysts with various supports was investigated under the wide range of conditions as 130 to 210 °C reaction temperature, 2.6×10-5 to 5.9×10-5 atm partial pressure of hydrogen and 1.4×10-9 to 3.7×10-8 atm partial pressure of toluene. For more study, two kinetics models were also selected and studied to describe the kinetics of this proces...