| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:Razpad metilen modrega v pretočnem fotokemijskem mikroreaktorju : diplomsko delo
Authors:ID Žajdela, Laura (Author)
ID Nemet, Andreja (Mentor) More about this mentor... New window
ID Petrovič, Aleksandra (Comentor)
Files:.pdf VS_Zajdela_Laura_2025.pdf (3,77 MB)
MD5: 16DD2128E4C9508B4CFDD34D3EF472B2
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V diplomskem delu preučujemo razgradnjo sintetičnega barvila metilen modro v vodni raztopini s pomočjo pretočnega fotokemijskega mikroreaktorja. Namen raziskave je bil določiti optimalne pogoje procesa, ki omogočajo čim višjo učinkovitost čiščenja ob čim nižji porabi energije. Ker se metilen modro pogosto uporablja v tekstilni in farmacevtski industriji, njegova prisotnost v odpadnih vodah predstavlja pomemben okoljski problem. Za izvedbo raziskave smo uporabili računalniški program Design Expert, s katerim načrtujemo poskuse po metodi odzivnih površin (RSM). Spreminjali smo štiri ključne parametre: pretok, začetno koncentracijo barvila ter količino dodanega železovega(II) sulfata in vodikovega peroksida, potek reakcije pa smo spremljamo s sprotnimi meritvami absorbance z UV-Vis spektrometrom. Na osnovi eksperimentalnih podatkov smo razvili matematični model za učinkovitost čiščenja in porabo energije. Rezultati kažejo, da ima na učinkovitost največji vpliv pretok, medtem ko začetna koncentracija barvila pomembno vpliva na porabo energije. Na koncu smo izvedli optimizacije z različnimi cilji kot so visoka učinkovitost čiščenje, minimalna poraba energije, pri čemer smo na podlagi razvite metod dobili kombinacije parametrov, ki vodijo do visoke učinkovitosti ob razmeroma nizki porabi energije. Ugotovili smo, da je uporaba fotokemijskega mikroreaktorja učinkovita in energetsko primerna metoda za čiščenje barvil iz vode, ki ima potencial za širšo uporabo, tudi pri obdelavi industrijskih vod.
Keywords:metilen modro, mikroreaktor, fotokemija, Design Expert
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[L. Žajdela]
Year of publishing:2025
Number of pages:1 spletni vir (1 datoteka PDF (VIII, 30 f.))
PID:20.500.12556/DKUM-94881 New window
UDC:66.094.94.085:547.869(043.2)
COBISS.SI-ID:250578691 New window
Publication date in DKUM:18.09.2025
Views:254
Downloads:37
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share



Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:28.08.2025

Secondary language

Language:English
Title:Degradation of methylene blue in a flow photochemical microreactor
Abstract:In this thesis, we examine the degradation of the synthetic dye methylene blue in an aqueous solution using a continuous-flow photochemical microreactor. The aim of the research was to determine the optimal process conditions that ensure the highest possible cleaning efficiency with the lowest possible energy consumption. Since methylene blue is commonly used in the textile and pharmacheutical industries, its presence in wastewater represents a significant environmental issue. To conduct the research, we employed the Design Expert software, to design experiments based on the response surface methodology (RSM). We varied four key parameters: flow rate, initial dye concentration and the amount of added ferrous sulfate and hydrogen peroxide. The progress of the reaction was monitored by measuring absorbance in real time using a UV-Vis spectrophotometer. Based on the experimental data, we developed a mathematical model describing purification efficiency and energy consumption. The results show that flow rate has the greatest influence on cleaning efficiency, while the initial dye concentration significantly affects energy use. Finally, we carry out several optimization scenarios and determine the parameter combinations that led to high degradation efficiency with relatively low energy consumption. We conclude that the use of a photochemical microreactor is an effective and energy-efficient method for removing dyes from water, with potential for broader application, including the treatment of industrial wastewater.
Keywords:methylene blue, microreactor, photochemistry, Design Expert


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica