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Identifier |
000441198 |
Title |
Μετεπεξεργασία της απορροής ενός διβάθμιου συστήματος αναερόβιας-αερόβιας επεξεργασίας αγροκτηνοτροφικών αποβλήτων με τη χρήση διεργασιών προσρόφησης και φωτοκατάλυσης |
Alternative Title |
Post treatment of a two type system of anerobious-aerobic agricultural waste treatment with the use of adhesion and photocatalyst processes |
Author
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Λυράκη, Πελαγία Ε.
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Thesis advisor
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Κατσαράκης, Νικόλαος
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Reviewer
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Δημάδης, Κωνσταντίνος
Μανιός, Θρασύβουλος
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Abstract |
The agricultural and livestock industries produce large quantities of agricultural waste,
which cannot be disposed of directly in the natural environment. Their occurrence in surface
and groundwater, but also in soil, intensifies global concern about the serious effects on
human health and increases the scientific interest in finding new and more effective methods
to remove their pollutants.
The object of the present study is to investigate the efficiency of adsorption and
photocatalysis processes in the management of effluents from agricultural waste treatment
systems. The samples used in our research resulted from the mixing of three types of livestock
waste. Specifically, they came from liquid waste from a cheese factory, a pigsty and an olive
mill. Initially, three mixtures of the waste were treated by a two-stage system (aerobic &
anaerobic processes) followed by their post-treatment by adsorption and photocatalysis where
the TiO2 and ZnO catalysts were used.
The results of the above processes regarding the percentage of pollutant load removed
from our samples, were particularly encouraging. In the 1st and 2nd sample of waste we
observe that the best percentages of dirt removal were obtained in the case where a catalytic
powder of constant concentration 500 ppm TiO2 P-25 Degussa was used and the pH of the
solution was adjusted to 2. In addition, remarkable results are observed after irradiation cases
of experiments where in the respective solution in addition to the TiO2 catalyst P-25 Degussa
was added an amount of H2O2.
In order to complete the work, the possibility of recycling the TiO2 catalyst was
additionally examined. The recyclability of the catalyst is very important for the methods of
adsorption and photocatalysis as it helps to reduce the cost of application of both methods,
while at the same time avoiding additional burden on the environment. Exactly this property
of durability and non-inactivation of the catalyst was studied by recycling the catalyst once.
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Language |
Greek |
Subject |
Adsorption |
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Photocatalysis |
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TiO2 |
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Titanium dioxide |
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Zinc oxide |
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ZnO |
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Διοξείδιο του τιτανίου |
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Ετερογενής φωτοκατάλυση |
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Οξείδιο του ψευδαργύρου |
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Προσρόφηση |
Issue date |
2021-07-30 |
Collection
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School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
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Type of Work--Post-graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/b/4/5/metadata-dlib-1626168045-90980-2455.tkl
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Views |
385 |