Primjena LED izvora zračenja u obradi otpadnih voda

undergraduate thesis

• Title (english): Application of LED radiation sources in wastewater treatment
• Author: Nikol Jović
• Mentor: Vanja Kosar (mentor)
• Committee member: Vanja Kosar (predsjednik povjerenstva)
• Committee member: Marina Duplančić (član povjerenstva)
• Committee member: Zvonimir Katančić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2022-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Otpadne vode predstavljaju jednu od najvećih opasnosti za zdravlje ljudi i okoliša, zbog čega je razvijen niz različitih postupaka njezine obrade. Konvencionalni postupci obrade otpadnih voda obuhvaćaju kemijske, fizikalne i biološke postupke, no u posljednje vrijeme, zahvaljujući svojoj učinkovitosti, sve se više primjenjuju napredni oksidacijski procesi. Heterogena fotokataliza jedna je od najučinkovitijih metoda razgradnje organskih onečišćenja u vodi, a kao izvori zračenja u provedbi ovoga postupka obrade koriste se Sunčevo zračenje, konvencionalne UV lampe, a u posljednje vrijeme sve češće LED diode. U ovome je radu ispitivana ovisnost intenziteta zračenja UV-A LED modula o naponu izvora na različitim udaljenostima LED modula od uzorka otpadne vode (2 i 3 cm), kao i za različite snage modula (20 i 30 W). Eksperimentalni rezultati pokazali su da intenzitet zračenja LED modula eksponencijalno raste s naponom.

Abstract (english)

Wastewater poses one of the greatest threats to human and environmental health, necessitating the development of various wastewater treatment processes. Traditional wastewater treatment methods include physical, chemical, and biological processes, but recently advanced oxidation processes have been increasingly used due to their high effectiveness. Heterogeneous photocatalysis is considered one of the most efficient wastewater treatment methods. Various light sources are used in the application of this treatment method, including solar radiation and conventional UV lamps, and more recently light-emitting diodes (LED). In this work, the functional relationship between irradiance and voltage of UV-A LED modules is investigated. The experiment was conducted with different distances from the wastewater sample (2 and 3 cm) and with different LED module intensities (20 and 30 W). The experimental results showed an exponential function plot between irradiance and voltage.

• Keywords: otpadne vode; napredni oksidacijski procesi; heterogena fotokataliza; LED izvori zračenja
• Keywords (english): wastewaters; advanced oxidation processes; heterogenous photocatalysis; LED
• Language: croatian
• URN:NBN: urn:nbn:hr:149:305372
• Project: Number: IP-2018-01-8669; Title: Intenzifikacija fotokatalitičkih i katalitičkih procesa za obradu otpadnih voda i otpadnih plinova; Acronym: IN-PhotoCat; Leader: Vesna Tomašić; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: Environmental Engineering - Undergraduate study; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka ekoinženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-03-01 10:15:21