| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document

Title:Večstopenjsko odstranjevanje težkih kovin iz rečnih sedimentov : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:Kopše, Sandra (Author)
Simonič, Marjana (Mentor) More about this mentor... New window
Urbancl, Danijela (Co-mentor)
Files:.pdf UN_Kopse_Sandra_2020.pdf (3,62 MB, This file will be accessible after 03.09.2023)
MD5: 96ED5E04C9A22C8262F76BB1EAE5FA6A
 
Language:Slovenian
Work type:Bachelor thesis/paper (mb11)
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V diplomskem delu je predstavljena tehnološka rešitev večstopenjskega odstranjevanja težkih kovin (cink, svinec in kadmij) iz rečnih sedimentov, ki se nalagajo v akumulacijskih jezerih HE na Dravi. Tehnološki proces je sestavljen iz priprave sedimenta, pranja sedimenta (fizikalno-kemijski postopek čiščenja) in čiščenja odpadne vode, ki nastane pri pranju sedimenta. Tako pripravljen (očiščen) sediment je primeren za nasipavanje stavbnih zemljišč in za nasipavanje območij mineralnih surovin za zapolnitev tal po izkopu. S pomočjo literature smo preučili različne načine pranja sedimenta in čiščenja odpadne vode, ki nastane pri procesu pranja sedimenta. Določili smo primerno topilo za ekstrakcijo kovin, analizirali vpliv velikosti delcev sedimenta na vsebnost težkih kovin in na učinkovitost odstranitve le-teh. Manjši in bolj fini delci vsebujejo več težkih kovin kot večji delci, zato smo večji del laboratorijskih eksperimentov izvajali na najmanjših delcih. Najboljši učinek odstranitve težkih kovin iz sedimenta smo dosegli s citronsko kislino pri 5-urnem mešanju 2 % suspenzije sedimenta. Za čiščenje odpadne vode po procesu pranja sedimenta smo se odločili za postopek adsorpcije kovinskih ionov na zeolit. Iz objavljenih člankov smo povzeli količino zeolita, potrebno za adsorpcijo kovinskih ionov, in učinek procesa odstranitve kovinskih ionov iz odpadne vode. Na podlagi dobljenih laboratorijskih rezultatov smo celoten proces čiščenja sedimenta prenesli še na aplikativni nivo, tako da smo izdelali tehnološki načrt čiščenja 100000 ton sedimenta na leto.
Keywords:sedimenti, kovine, citronska kislina, zeolit, ekonomska analiza
Year of publishing:2020
Place of performance:Maribor
Publisher:[S. Kopše]
Number of pages:IX, 46 str.
Source:Maribor
UDC:666.123.4:502.51(285)(043.2)
COBISS_ID:29842179 New window
NUK URN:URN:SI:UM:DK:5T8SXJ6N
Views:126
Downloads:0
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FKKT
:
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:AddThis
AddThis uses cookies that require your consent. Edit consent...

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:13.08.2020

Secondary language

Language:English
Title:Multistage removal of heavy metals from contaminated river sediments
Abstract:In the diploma we present the technological solution to multistage removal of heavy metals (zinc, lead, cadmium) from the river sediments which are deposited in the accumulation lakes of the hydroelectric power plants on the river Drava. The technological process consists of preparation of the sediment, washing the sediment (physical-chemical process of sediment cleaning) and cleaning the by-product waste water. Such sediment is suitable for filling of building land and for filling the empty ground of the regions with mineral resources after extraction. With the help of existing literature, we studied different ways of washing the sediment and cleaning the waste water that is produced via the process of washing the sediment. We determined an appropriate solvent for heavy metal extraction, analysed the influence of the size of the particles in the sediment on the content of heavy metals in the efficacy of their removal. Smaller and finer particles contain more heavy metals than larger particles, therefore we performed more of our laboratory experiments on smaller particles. The process of removal of heavy metals from the sediment worked best with citric acid when we used it to wash the 2% sediment suspension for the duration of 5 hours. We decided on the process of adsorption of heavy metals to zeolite for cleaning the waste water. From the available literature we determined the amount of zeolite that’s needed for the adsorption of heavy metal ions and the efficacy of the said process on removal of heavy metal ions from the waste water. Through the synthesis of our research and laboratory experiments we produced a technological plan for cleaning 100000 tons of sediment per year.
Keywords:sediment, metals, citric acid, zeolite, economic analysis


Comments

Leave comment

You have to 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