Primerjava keramičnih in polimernih ultrafiltracijskih modulov za čiščenje oljno vodnih emulzij

diplomska naloga

Arnela Murić (Author), Marjana Simonič (Mentor), Irena Petrinić (Co-mentor)

Abstract

Odpadne oljno vodne emulzije so eden od glavnih onesnaževal, ki se pojavljajo v številnih industrijskih področjih in so zelo škodljive za okolje, zlasti za vodno življenje. Običajno oljno vodne emulzije vsebujejo 1 – 10 % olj, prav tako emulgatorje in druge kemikalije, kot so površinsko aktivne snovi, itd. Vse konvencionalne metode za obdelavo oljno vodnih emulzij kot so flotacija, koagulacija, adsorpcija, itd imajo svoje prednosti, vendar nobena ni učinkovita kot membranska tehnologija, ki omogoča uporabo različnih materialov, modulov, načinov obratovanja itd. Cilj te diplomske naloge je bil primerjati keramične in polimerne membranske module za obdelavo odpadnih oljno vodnih emulzij kovinsko-predelovalne industrije Hidria Rotomatika d.o.o. Poleg realnih vzorcev emulzij in permeatov iz industrijske čistilne naprave smo obratovali tudi v laboratoriju z dvema pilotnima napravama – s keramičnim in polimernim membranskim modulom – in sicer z 1, 2 in 4 % raztopinami Ultra Safe 620 v kislem in alkalnem mediju. Gre za hidravlično olje, ki ga v Hidrii Rotomatiki d.o.o. uporabljajo v proizvodnji in ki je glavni povzročitelj mašenja membran. Ugotovili smo, da so glede samega obratovanja veliko boljše keramične membrane, kjer je bilo prisotno predvsem reverzibilno mašenje membrane, medtem ko je pri polimernih membranah prevladovalo ireverzibilno mašenje membrane, ki zahteva več čiščenja. Analizno delo je obsegalo merjenje fizikalno-kemijskih parametrov: pH, prevodnost, motnost, kemijska potreba po kiskiu, težkohlapne lipofilne snovi, skupne suspendirane in železo, saj smo na podlagi zmanjšanja vsebnosti snovi v permeatih glede na vsebnost v vhodnih emulzijah potrdili višjo učinkovitost keramičnih membran v primerjavi s polimernimi.

Keywords

oljno vodne emulzije;membranska tehnologija;mašenje;polietilen glikol;učinkovitost;

Data

Language:	Slovenian
Year of publishing:	2011
Source:	Maribor
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[A. Murić]
UDC:	66.081.63(043.2)
COBISS:	15407638
Views:	2747
Downloads:	247
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Comparison of ceramic and polymeric ultrafiltration modules for treatment of oil-in-water emulsions
Secondary abstract:	Oily wastewater is one of the major pollutants that occur in many industrial fields and it is very harmful to the environment, especially to aquatic life. Oily wastewater usually contains 1 – 10 % of oils, emulsifiers, and other chemicals, such as surfactants, coalescers etc. All conventional methods such as dissolved air - flotation, coagulation, adsorption, etc. have their advantages, but none is as effective as membrane technology, which offers many possibilities regarding the application of different materials, modules, pressures etc. The aim of this thesis was a comparison between the ceramic and polymeric membrane modules for real waste oil-in-water emulsion treatment at the Hidria Rotomatika d.o.o company. In addition, model solutions were prepared (1, 2 and 4 % solution of Ultra Safe 620 in acidic and alkaline mediums) and treated on a laboratory scale, using two pilot plants - using ceramic and polymeric membrane modules. Ultra Safe 620 is a hydraulic fluid which is used within Hidria Rotomatika d.o.o. during production and according to their experience it is the main cause of membrane fouling. We found that the operation itself was much better using ceramic membranes, where reversible membrane fouling was mainly presented, whilst in the case of polymeric membranes the irreversible membrane fouling was dominant. This type of fouling demands complex chemical cleanings. The physico-chemical analyses were performed measuring pH, conductivity, turbidity, chemical oxygen demand, lipophilic substances, totally suspended solids, and iron. It was confirmed that efficiency regarding substances' removal of ceramic membranes was higher compared to the polymeric ones.
Secondary keywords:	oil in water emulsion;membrane technology;fouling;polyethylene glycol;efficiency;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	94 str.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;chemical technology;chemical and related industries;kemijska tehnologija;kemijske in sorodne industrije;physical and physicochemical operations and equipment;physical and physicochemical effects on chemical processes;fizikalne in fizikalno-kemijske operacije ter oprema;fizikalni in fizikalno-kemijski vplivi na kemijske procese;
ID:	8762008