engleski

Photooxidative degradation of pesticides in water: mechanistic modelling approach

A worldwide concern for development of alternative water-reuse technologies continuously increases, mainly focused on industry and agriculture. The conventional water treatment technologies, mostly relying on physical and biological processes seems to be inadequate for effective removal of priority substances such as pesticides. At the same time, advanced oxidation processes (AOP) showed to be very effective for the same purpose. This study evaluates the applicability of photooxidative degradation of four pesticides from priority substances list within the EU Water Framework directive: namely alachlor, chlorphenvinfos, diuron, isoproturon. The aim of the work was development of a flexible mathematical/mechanistic model (MM) capable to describe UV-C/H2O2 process with further parameters:  conversion and mineralization kinetics of parent pollutant,  water quality during AOP treatment ; defined by chemical (COD) and biochemical (BOD5) oxygen demand,  changes of pH-value during AOP treatment. After model development, extensive statistical analysis was performed. The analysis revealed high correlation between predicted and empirical data. The applied MM model proved to be easy interpretable, transparent, flexible and accurate at the same time. Accordingly, it can be used for prediction of degradation of pesticides with complex structures by applying UV-C photo-assisted AOPs with hydrogen peroxide as oxidant

pesticides, advanced oxidation processes, UV-C/H2O2, mechanistic modelling

Ovaj rad je izrađen u sklopu projekta „Modeliranje okolišnih aspekata napredne obrade voda za razgradnju prioritetnih onečišćivala“ Hrvatske zaklade za znanost na Fakultetu kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu.