Utjecaj mikroplastike na uklanjanje pesticida s membranskim separacijskim procesima

undergraduate thesis

• Title (english): Effect of microplastic on removal of pesticides with membrane separation processes
• Author: Josipa Juračić
• Mentor: Davor Dolar (mentor)
• Committee member: Davor Dolar (predsjednik povjerenstva)
• Committee member: Danijela Ašperger (član povjerenstva)
• Committee member: Dragana Vuk (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2023-09-11, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Nova zagađivala (engl. emerging contaminants) predstavljaju jednu od najvećih opasnosti za okoliš. Pod nova zagađivala ubrajaju se prirodne ili sintetičke kemikalije ili mikroorganizmi koji se obično ne nadziru u okolišu. To su farmaceutici, pesticidi, industrijske kemikalije, površinski aktivne tvari, proizvodi za osobnu njegu. Membranski separacijski procesi pokazali su se učinkoviti pri uklanjanju pesticida iz otpadnih i drugih voda. Uklanjanje novih zagađivala iz vode i okoliša postalo je prioritetno istraživanje posljednjih desetljeća. U ovom radu ispitivan je utjecaj mikroplastike na uklanjanje pesticida membranskim separacijskim procesima. Ispitivani su metiokarb i imidakloprid, insekticidi koji dugo ostaju u metaboličkim procesima u biljci i koji su zakonom zabranjeni u Republici Hrvatskoj. Ultrafiltracija, nanofiltracija i reverzna osmoza, su membranski separacijski procesi koji su bili korišteni u ispitivanju učinkovitosti uklanjanja pesticida pri radnom tlaku od 10 bar. Koristilo se 5 membrana, GH, GK, NF90, XLE i NF. Učinkovitost uklanjanja pesticida ovisi o veličini pora membrane pa se pesticidi različito zadržavaju na membranama. Ultrafiltracijom nije moguće ukloniti pesticide iz otopina s ili bez mikroplastike, faktori zadržavanja nanofiltracijskih membrana bili su > 60 %, dok se revezno osmotskim membranama najviše pesticida može ukloniti, do 90 %. Došlo je do manjih interakcija između korištenih ultrafiltracijskih membrana, odnosno membrana s većim porama. Prisutnost mikroplastike nije značajno promijenilo učinkovitost zadržavanja pesticida s korištenim membranama.

Abstract (english)

Emerging contaminants pose one of the greatest treats to the environment. Emerging contaminants include natural or synthetic chemicals or microorganisms that are not usually monitored in the environment. These include pharmaceuticals, pesticides, industrial chemicals, surfactants, and personal care products. Membrane separation processes have proven effective in removing pesticides from wastewater and other water bodies. Removal of these emerging contaminants from water and the environment has become a priority research objective in recent years. In this work, the influence of microplastics on the removal of pesticides with membrane separation processes was investigated. The tested pesticides methiocarb and imidacloprid are insecticides that remain in the metabolism of plants for a long time and are prohibited by law in the Republic of Croatia. Ultrafiltration, nanofiltration, and reverse osmosis are membrane separation processes that were used in testing the effectiveness of pesticide removal at a working pressure of 10 bar. Five membranes were used: GH, GK, NF90, XLE, and NF. The efficiency of pesticide removal depends on the size of membrane pores, so pesticides are retained differently on membranes. Ultrafiltration cannot remove pesticides from solutions with, or without microplastics. The retention factors of nanofiltration membranes were > 60%, while most pesticides can be removed with reverse osmotic membranes, up to 90%. There were interactions between the ultrafiltration membranes used, i.e., membranes with larger pores. The presence of microplastics did not significantly affect the pesticide retention efficiency with the membranes used.

• Keywords: nova zagađivala; metiokarb; imidakloprid; reverzna osmoza; nanofiltracija; ultrafiltracija
• Keywords (english): emerging contaminants; methiocarb; imidacloprid; reverse osmosis; nanofiltration; ultrafiltration
• Language: croatian
• URN:NBN: urn:nbn:hr:149:736061
• Project: Number: IP-2019-04-9661; Title: Primjena naprednih tehnologija obrade voda za uklanjanje mikroplastike; Title: Advanced Water Treatment Technologies for Microplastics Removal; Acronym: AdWaTMiR; Leader: Tomislav Bolanča; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: Materials Science and Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-09-13 13:02:47