Title
Degradation of surfactants using dielectric barier discharge reactor
Creator
Aonzas, Munera Mustfa. 1982-
Copyright date
2016
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Autorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
License description
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Language
English
Cobiss-ID
Theses Type
Doktorska disertacija
description
Datum odbrane: 0311.2016.
Other responsibilities
mentor
Roglić, Goran, 1964-
član komisije
Manojlović, Dragan, 1961-
član komisije
Obradović, Bratislav, 1966-
član komisije
Dojčinović, Biljana
University
Univerzitet u Beogradu
Faculty
Hemijski fakultet
Alternative title
Degradacija surfaktanata primenom reaktora sa dielektričnim barijernim pražnjenjem.
Publisher
[ M. Mustfa Aonzas]
Format
119 listova
description
Hemija - Chemistry
Abstract (en)
Surfactants are a group of compounds, which are widely used in industrial,
agricultural, and pharmaceutical markets in various products, including detergents, pesticides,
petroleum products, cosmetics and pharmaceuticals. Surfactants and their degradation
products are widely detected in domestic and industrial wastewater. Due to their significant
effects on the aquatic environment, degradation of surfactants is subject of many research
papers. In addition to the classical wastewater treatment a lot of research is addressed to the
usage of advanced oxidation process for removal of various surfactants.
The aim of this study was to investigate using of non-thermal plasma (water falling
film dielectric barrier discharge plasma reactor) for degradation of two anionic surfactants
(sodium dodecyl sulfate - SDS and sodium dodecylbenezene sulfonate - DBS) and two
nonionic surfactant (Triton X-100 and nonylphenol ethoxylate - NPE ). Surfactants examined
in this research are predominantly used in formulations of laundry detergents and for
industrial cleaning application. The effects of two catalytic plasma systems,( iron (II) salt and
hydrogen peroxide), were tested to improve the degradation of surfactants. Efficiency of
degradation was determined by spectrophotometric determination of decrease of surfactants
concentration. Decrease of chemical oxygen demand and total organic carbon were measured
to determine degree of mineralization.
In cases of two nonionic surfactants and sodium dodecylbenzene sulpfonate catalytic
systems exhibited significant improvements in degradation efficiency especially in beginning
of treatment. In the case of sodium dodecyl sulphate catalysts have no effect on surfactant
degradation. Mineralization of surfactants in all cases was significantly improved in presence
of catalyst.
Toxicity test with Artemia salina (A. salina) test organisms showed that toxicity in all
case were decreased after treatment of solutions in water falling film dielectric barrier
discharge plasma reactor.
Abstract (sr)
Surfaktanti predstavljaju grupu jedinjenja koja se šitoko koristi u industriji,
poljoprivredi i farmaceutskoj industriji u različitim proizvodima uključujući detergente,
pesticide, proizvode petrohemijske industrije, kozmetičke proizvode i lekove. Surfaktanti i
prozvodi njihove degradacije su vrlo često prisutni u kanalizacionim i industrijskim otpadnim
vodama. Usled njihovog efekta na vodene organizme degradacija surfaktanata predstavlja
značajnu oblast istraživanja. Pored klasičnih tretmana otpadnih voda istraživanja su usmerena
i ka primeni unapređenih oksidacionih procesa za uklanjanje različitih surfaktanata iz
otpadnih voda.
Predmet ovoga rada je ispitivanje mogućnosti primene netermalne plazme
(korišćenjem reaktora sa dielektričnim barijernim pražnjenjem kroz tanak film vode) za
degradaciju dva anjonska surfaktanta (natrijum-dodecil-sulfata i natrijum-dodecilbenzensulfonata)
i dva nejonska surfaktanta (Triton X-100 i nonilfenol etoksilata). Ovi surfaktanti se
koriste u formulacijama detergenata za pranje veša i u procesima industrijskog pranja. Pored
toga ispitani su i efekti homogenih katalizatora (soli gvožđa (II) i vodonik-peroksida na
poboljšanje efikasnosti degradacije. Efikasnost degradacije je praćena spektrofotometrijskim
određivanjem smanjenja koncentracije surfaktanata. U cilju određivanja stepena
mineralizacije odnosno potpune razgradnje organske supstance određeni su hemijska
potrošnja kiseonika i ukupan organski ugljenik nakon tretmana.
U eksperimentima sa dva nejonska surfaktanta i natrijum-dodecilbenzen-sulfonata
katalitički sistemi su pokazali značajan efekat u povećanju efikasnosti degradacije posebno pri
nižim vrednsotima primenjene energije. U eksperimentu sa natrijum-dodecil-sulfatom
katalizatori nisu pokazali uticaj na efikasnost degradacije. U svim eksperimentima katalizatori
su pokazali značajan uticaj na mineralizaciju rastvora odnosno na razgradnju organske
supstance.
Testovi ispitivanja toksičnosti sa Artemia salina organizmima su pokazali da je u svim
eksperimentima toksičnost rastvora smanjena nakon tretmana u reaktoru sa dielektričnim
barijernim pražnjenjem.
Authors Key words
surfaktanti, unapređeni oksidacioni procesi, netermalna plazma,
dielektrično barijerno pražnjenje, homogena kataliza, test ispitivanja toksičnosti
Authors Key words
surfactants, advanced oxidation process, non-thermal plasma, dielectric
barrier discharge, homogenous catalysis, toxicity test
Type
Tekst
Abstract (en)
Surfactants are a group of compounds, which are widely used in industrial,
agricultural, and pharmaceutical markets in various products, including detergents, pesticides,
petroleum products, cosmetics and pharmaceuticals. Surfactants and their degradation
products are widely detected in domestic and industrial wastewater. Due to their significant
effects on the aquatic environment, degradation of surfactants is subject of many research
papers. In addition to the classical wastewater treatment a lot of research is addressed to the
usage of advanced oxidation process for removal of various surfactants.
The aim of this study was to investigate using of non-thermal plasma (water falling
film dielectric barrier discharge plasma reactor) for degradation of two anionic surfactants
(sodium dodecyl sulfate - SDS and sodium dodecylbenezene sulfonate - DBS) and two
nonionic surfactant (Triton X-100 and nonylphenol ethoxylate - NPE ). Surfactants examined
in this research are predominantly used in formulations of laundry detergents and for
industrial cleaning application. The effects of two catalytic plasma systems,( iron (II) salt and
hydrogen peroxide), were tested to improve the degradation of surfactants. Efficiency of
degradation was determined by spectrophotometric determination of decrease of surfactants
concentration. Decrease of chemical oxygen demand and total organic carbon were measured
to determine degree of mineralization.
In cases of two nonionic surfactants and sodium dodecylbenzene sulpfonate catalytic
systems exhibited significant improvements in degradation efficiency especially in beginning
of treatment. In the case of sodium dodecyl sulphate catalysts have no effect on surfactant
degradation. Mineralization of surfactants in all cases was significantly improved in presence
of catalyst.
Toxicity test with Artemia salina (A. salina) test organisms showed that toxicity in all
case were decreased after treatment of solutions in water falling film dielectric barrier
discharge plasma reactor.
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