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FOTOKATALITIČKA OKSIDACIJA TRAGOVA HERBICIDA U ZRAKU

PHOTOCATALYTIC OXIDATION OF TRACE HERBICIDES IN AIR
Authors: Radetić, Elizabeta; Radetić, Lucija; Melnjak, Ivana; Grčić, Ivana;

FOTOKATALITIČKA OKSIDACIJA TRAGOVA HERBICIDA U ZRAKU

Abstract

Hlapivi organski spojevi (eng. Volatile Organic Compounds, dalje: VOC) i aerosoli postali su jedni od glavnih onečišćivala zraka, u zatvorenim i otvorenim prostorima. Izvor VOC- eva u zraku je i česta upotreba herbicida i pesticida općenito zbog visoke hlapivosti takvih organskih molekula, dok se dio pesticida veže na krute čestice i prenosi se zrakom u obliku aerosola. Široka upotreba pesticida na poljoprivrednim površinama doprinosi povećanoj koncentraciji VOC- eva u zraku obzirom da su poljoprivredne površine prepoznate kao kolektivni izvori emisija. Trenutno ne postoji zakonodavna osnova za praćenje emisija s poljoprivrednih površina. Sukladno Objedinjenim uvjetima zaštite okoliša, odnosno IPPC direktivi, fotokatalitička oksidacija uz TiO2 navodi se kao alternativna najbolja raspoloživa tehnika (NRT), učinkovita za uklanjanje VOC-eva iz zraka. To je proces koja koristi sinergijsku interakciju svjetlosnog zračenja, katalizatora - poluvodiča i oksidacijskih spojeva kako bi razgradila onečišćivala u fluidima (vodi i zraku) do H2O i CO2 te ostalih inertnih produkata ovisno o kemijskom sastavu onečišćivala. Kako bi se potvrdila mogućnost primjene fotokatalitičke oksidacije za uklanjanje tragova herbicida iz zraka, proveden je niz eksperimenata u anularnom fotoreaktoru pod utjecajem simuliranog sunčevog zračenja. Rezultati su pokazali da je primjenom navedene tehnologije solarne fotokatalize pri optimalnim uvjetima relativne vlažnosti zraka moguće ukloniti/razgraditi promatrano onečišćivalo i smanjiti udio VOC-eva u struji zraka.

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Keywords

onečišćenje zraka, herbicidi, VOC- evi, onečišćenje zraka ; VOC- evi ; herbicidi ; fotokatalitička oksidacija ; solarna fotokataliza, solarna fotokataliza, fotokatalitička oksidacija

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    influence
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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green
bronze