Use of Modified Adsorbents to Remove Pesticides From Wastewater
Date
2022-03-01
Journal Title
Journal ISSN
Volume Title
Publisher
Видавництво Львівської політехніки
Lviv Politechnic Publishing House
Lviv Politechnic Publishing House
Abstract
The migration of highly concentrated pesticide
solutions in the soil has been experimentally studied. A
mathematical model of the diffusion process in the soil
environment has been developed. Based on the mathematical
model, a system of equations for calculating the duration and
intensity of the process depending on environmental parameters
was obtained. The dependence of the process velocity on the
direction of the diffusion front is determined, and the diffusion
coefficients, kinetic coefficients of the diffusion process and the
diffusion front velocity were calculated. Environmental aspects
of pesticide migration were analysed. The diffusion coefficient
of glyphosate in the model soil environment is established.
Under the experimental conditions, the diffusion coefficient
value was D = 1.755×10-12 m2/s. The study results of the process
of migration of the component up the soil profile indicate the
mechanism of molecular diffusion of glyphosate in the soil
environment. The results of experimental research and the
solution of the mathematical model were used to model the
migration process in the Comsol Multiphysics environment.
Analysis of theoretical and experimental results showed that the
developed model could be used to calculate the dynamics of the
spread of the pesticide front in the soil with sufficient accuracy.
Description
Keywords
diffusion, pesticides, soil, groundwaters, environmental protection
Citation
Use of Modified Adsorbents to Remove Pesticides From Wastewater / Vira Sabadash, Jaroslaw Gumnitsky, Anna Nowik-Zając, Iwona Zawierucha, Galyna Krylova // Environmental Problems. — Lviv : Lviv Politechnic Publishing House, 2022. — Vol 7. — No 2. — P. 103–108.