undergraduate thesis
Decolourisation of synthetic dyes by fungal pellets

Kazimir Antunović (2015)
Josip Juraj Strossmayer University of Osijek
FACULTY OF FOOD TECHNOLOGY
Department of Process Engineering
Sub-department of Bioprocess Engineering
Metadata
TitleObezbojenje sintetskih bojila pomoću peleta gljiva : završni rad
AuthorKazimir Antunović
Mentor(s)Natalija Velić (thesis advisor)
Abstract
Obojene otpadne vode koje se ispuštaju u prirodne prijemnike, a sadrže velike koncentracije sintetskih bojila, važan su izvor onečišćenja površinskih i podzemnih voda. Prisutnost bojila u industrijskim otpadnim vodama predstavlja problem zbog izrazite otpornosti bojila na promjene temperature i na utjecaj svjetlosti, što uzrokuje njihovo dugo zadržavanje u okolišu. Nadalje, sintetska bojila često su vrlo otporna na razgradnju pomoću mikroorganizama, što čini konvencionalne metode biološke obrade otpadnih voda neučinkovitima za uklanjanje/biorazgradnju bojila. Kao alternativa skupim konvencionalnim metodama uklanjanja bojila, poput koagulacije, flokulacije, oksidacije, ozoniranja ili membranskih procesa, razvijene su mnoge nove metode, uključujući i biološke metode uklanjanja pomoću mikroorganizama. Cilj ovog rada bio je preliminarno istražiti mogućnost upotrebe peleta gljive bijelog truljenja Trametes versicolor CCBAS AG 613 u svrhu obezbojenja (uklanjanja) sintetskog bojila malahitnog zelenila iz vodene otopine. Postotak uklanjanja bojila pomoću peleta nakon 24 h iznosio je preko 80 % u gotovo svim provedenim pokusima. Istražen je utjecaj početne koncentracije biomase, koncentracije malahitnog zelenila i dodatka glukoze na postotak uklanjanja bojila. Nadalje, istražena je mogućnost ponovnog korištenja peleta u ponovljivom šaržnom testu obezbojenja. Povećanjem početne koncentracije biomase došlo je do povećanja postotka uklanjanja bojila; dok je povećanje koncentracije bojila, neovisno o početnoj koncentraciji biomase, imalo suprotan učinak. Dodatak glukoze kao vanjskog izvora ugljika u vodenu otopinu bojila rezultirao je nešto manjim postotkom uklanjanja bojila. Ponovnim korištenjem u drugom ciklusu, peleti su zadržali sposobnost obezbojenja vodene otopine malahitnog zelenila, ali u nešto manjem postotku nego prilikom prvog korištenja. Preliminarni rezultati dobiveni ovim istraživanjem upućuju na mogućnost korištenja micelijskih peleta T. versicolor CCBAS AG 613 u bioremedijaciji obojenih otpadnih voda.
Keywordssynthetic dye decolourisation T. versicolor fungal pellets malachite green
Parallel title (English)Decolourisation of synthetic dyes by fungal pellets
GranterJosip Juraj Strossmayer University of Osijek
FACULTY OF FOOD TECHNOLOGY
Lower level organizational unitsDepartment of Process Engineering
Sub-department of Bioprocess Engineering
PlaceOsijek
StateCroatia
Scientific field, discipline, subdisciplineBIOTECHNICAL SCIENCES
Food Technology
Engineering
Study programme typeuniversity
Study levelundergraduate
Study programmeFood Technology
Academic title abbreviationuniv. bacc. ing. techn. aliment.
Genreundergraduate thesis
Language Croatian
Defense date2015-09-09
Parallel abstract (English)
Discharge of highly coloured effluents, containing different synthetic dyes, is considered to be an important source of surface and ground waters contamination. The presence of dyes in industrial effluents (namely wastewater) is a major concern due to their high thermal stability and photo stability, i.e. their persistence in the environment for an extended period of time. Furthermore, synthetic dyes exhibit recalcitrance towards removal/biodegradation by conventional biological wastewater treatment methods. Many alternative removal methods, including promising biological methods, have been developed towards highly cost conventional approaches such as coagulation-flocculation, oxidation or ozonation and membrane separation. The aim of this study was to preliminary investigate the dye (malachite green) decolourisation ability of white rot fungus Trametes versicolor CCBAS AG 613 mycelial pellets. Fungal pellets used could remove more than 80 % of the colour within 24 h. Effect of initial biomass concentration, malachite green concentration and glucose addition on dye percentage removal was tested. Furthermore, the longevity of this decolourisation activity was tested in repeated-batch mode. An increase in the initial biomass concentration positively affected the decolourisation, resulting in higher dye percentage removal. However, the increase in dye concentration had the opposite effect. Glucose addition to the dye solution resulted in slightly lower dye percentage removal. When used in repeated-batch mode, pellets exhibited lower dye percentage removal but still remained over 80 % after 24 h. These preliminary results indicate that white rot fungal pellets could effectively be used for bioremediation of coloured wastewater.
Parallel keywords (Croatian)sintetsko bojilo obezbojenje T. versicolor peleti gljiva malahitno zelenilo
Resource typetext
Access conditionOpen access
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:109:705268
CommitterIvana Šuvak