Peroctena kiselina u naprednim oksidacijskim procesima obrade voda

undergraduate thesis

• Title (english): The application of peracetic acid in advanced oxidation processes
• Author: Matea Gavran
• Mentor: Hrvoje Kušić (mentor)
• Committee member: Hrvoje Kušić (predsjednik povjerenstva)
• Committee member: Ana Lončarić Božić (član povjerenstva)
• Committee member: Šime Ukić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2018-09-20, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry; Applied Chemistry

Abstract

Napretkom farmaceutske industrije sve je veći broj lako dostupnih farmaceutika koji se svakodnevno koriste. S obzirom da postoji niz različitih lijekova, raste interes znanosti kako za njihov učinak na čovjeka, odnosno ciljani organizam tako i za njihovu djelovanje na okoliš. Farmaceutici u okoliš dospijevaju na razne načine, a jedan od najznačajnijih načina je ulazak putem konvencionalnih postrojenja za obradu otpadnih voda. U posljednjih petnaestak godina uložen je velik trud za pronalazak novih visokoučinkovitih tehnologija za uklanjanje onečišćenja iz otpadnih voda, a kao moguće rješenje za uklanjanje farmaceutika odnosno mikro-onečišćivala pokazali su se napredni oksidacijski procesi. U ovome je radu statističkim planiranjem eksperimentalno istraženo oksidacijsko djelovanje peroctene kiseline na uklanjanje diklofenaka, farmaceutski aktivne komponente koja je na tržištu dostupna u obliku za oralnu primjenu, kožnu primjenu te u obliku kapi i injekcija, stoga je sveprisutan u otpadnim vodama. Pokazalo se kako je razgradnja diklofenaka pomoću peroctene kiseline kinetički spor proces te je kao katalizator odabran željezno-oksidni heterogeni katalizator kako bi se dobio svojevrstan modificirani Fentonov proces. Djelovanjem PAA/γ-Fe2O3 ostvareno je izuzetno brzo i potpuno uklanjanje diklofenaka u istraživanom vremenu te je općenito ostvareno izuzetno veliko uklanjanje organske tvari.

Abstract (english)

With the progress and improvement of the pharmaceutical industry, the number of pharmaceuticals used daily is increasing. Since there is a large number of different medicines, the interest of science is growing for the investigation of their influence on humans and other target organisms as well as their impact on the environment. Pharmaceuticals reach into the environment in many ways, from which one of the most significant ones is entry by conventional wastewater treatment plants (WWTPs) caused by inadequate removal. During the last 15 years, a great effort is invested into finding new highly-effective technologies for waste removal from wastewaters, and for the removal of pharmaceuticals or micro-pollutants, advanced oxidation processes have been shown as a possible solution. In this research, the oxidative effect of peracetic acid on the removal of diclofenac was investigated by statistical design of experiments. Diclofenac is an active pharmaceutical ingredient available on the market as an oral, transdermal, parenteral and ophtalmic dosage forms, hence it is omnipresent in wastewater. This research showed that the degradation of diclofenac with peracetic acid is a kinetically slow process and to increase the rate of reaction, an iron-oxide heterogenous catalyst was chosen, in order to achieve a modified-Fenton process. The PAA/γ-Fe2O3 has achieved a kinetically fast and complete removal during the investigated period of time and achieved an overall high degree of organic content removal.

• Keywords: diklofenak; maghemit; modificirani Fentonov proces; napredni oksidacijski procesi; peroctena kiselina
• Keywords (english): diclofenac; maghemite; modified Fenton process; advanced oxidation processes; peracetic acid
• Language: croatian
• URN:NBN: urn:nbn:hr:149:895807
• Study programme: Title: Environmental Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2022-05-20 13:58:06