Biosorpcija odabranih teških metala kompostom Myriophyllum spicatum
Biosorption of selected heavy metals by compost of myriophyllum spicatum
Author
Milojković, Jelena![](/themes/MirageNardus/images/orcid.png)
Mentor
Ristić, MirjanaCommittee members
Perić Grujić, Aleksandra![](/themes/MirageNardus/images/orcid.png)
Stojanović, Mirjana
![](/themes/MirageNardus/images/orcid.png)
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Show full item recordAbstract
U okviru ove doktorske disertacije ispitana je mogućnost primene invazivne
korovske akvatične biljke Myriophyllum spicatum i komposta nastalog mikrobiološkom
razgradnjom ove biljke, kao biosorbenata za uklanjanje odabranih teških metala iz
vodenog rastvora. Biljka potiče iz Savskog jezera, Beograd, Srbija, a kompost sa
deponije na koju se odlaže ova biljka, posle košenja. Za biosorpciju Pb(II) primenjeni su
Myriophyllum spicatum i kompost, dok je za simultano uklanjanje odabranih teških
metala, Pb(II), Cu(II), Cd(II), Ni(II) i Zn(II), iz vodenog rastvora korišćen kompost.
Analiziran je proces biosorpcije u šaržnom sistemu, variran je veći broj
parametara koj utiče na proces, izvršena je karakterizacija primenjenih biosorbenata,
određeni su model ravnotežne izoterme i kinetički model, kojima se može najbolje
opisati proces biosorpcije.
Oba primenjena biosorbenta su prvi put okarakterisana u okviru ovih
istraživanja, primenom većeg broja instrumentalnih tehnika, skenirajuća elektronska
m...ikroskopija (SEM), energodisperzivni detektor X-zraka (EDS), Infracrvena
spektroskopija sa Furijeovom transformacijom (FTIR), rendgenska difrakciona analiza
(XRD), Termijska analiza (TGA/DTA). Određivanje koncentracije jona odabranih
teških metala u vodenom rastvoru vršeno je primenom atomske apsorpcione
spektroskopije (AAS).
Najbolje slaganje eksperimentalnih vrednosti dobijenih ispitivanjem biosorpcije
Pb(II) sa biljkom Myriophyllum spicatum i njenim kompostom bilo je sa Sipsovim
modelom izoterme, a za oba materijala kinetika procesa je pratila model pseudo-drugog
reda. Kapacitet biosorpcije Pb(II) bio je 0,287 mmol/g za kompost, a 0,234 mmol/g za
biljku.
Afinitet primenjenog biosorbenta prema ispitivanim metalima, opadao je u nizu:
Pb(II)>Cu(II)>Zn(II)>Cd(II)>Ni(II). Najbolje slaganje eksperimentalno dobijenih
vrednosti je bilo sa Sipsovim izotermnim modelom, za koji su vrednosti koeficijenta
determinacije bile bliske 1. Kinetika procesa biosorpcije odabranih metala prati model...
In this doctoral thesis, a possibility was examined to use the invasive aquatic
weed plant Myriophyllum spicatum and its compost, generated from microbial
degradation, as biosorbent for the removal of selected heavy metals from aqueous
solution. The plant was harvested from the Sava Lake in Belgrade, Serbia, and the
compost was collected from the open landfill where it is disposed. Myriophyllum
spicatum and its compost were applied for Pb (II) biosorption, whereas for the
simultaneous removal of, Pb(II), Cu(II), Cd(II), Ni(II) and Zn(II) from aqueous solution
only compost was used.
Biosorption proces in a batch system was analyzed by applying various batch
processing parameters, which affect biosorption. Besides, the applied biosorbents were
characterized and the equilibrium isotherms and kinetic models, which best describe the
process of biosorption, were determined.
In these investigations both applied biosorbents were characterized for the first
time, with different instrumental tec...hniques: Scanning electron microscopy (SEM),
Energy dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy
(FTIR), X-ray diffraction techniques (XRD), and thermal analysis. The analytical
measurements of selected heavy metal ions concentration in aqueous solution were
made by using Atomic absorption spectroscopy (AAS).
The best fit of experimental data, obtained from the study of Pb(II) bosorption
with Myriophyllum spicatum and its compost, was achieved when Sips isotherm model
was used, whereby the process kinetics of both biosorbents followed a pseudo-secondorder
kinetic model. Lead binding capacity of the compost was 0.287 mmol/g and of the
plant 0.234 mmol/g.
The affinity of the tested metals to the applied biosorbent was in descending
order: Pb(II)>Cu(II)>Zn(II)>Cd(II)>Ni(II). The best fit of the experimentally obtained
data was when Sips isotherm model was applied for which correlation coefficients were
close to 1 (one). The kinetic studies indicated that the biosorption process of the metal
ions followed well pseudo-second-order model, for which experimentally obtained...
Faculty:
Универзитет у Београду, Технолошко-металуршки факултетDate:
29-09-2015Projects:
- Development of technologies and products based on mineral raw materials and waste biomass for protection of natural resources for safe food production (RS-MESTD-Technological Development (TD or TR)-31003)
- Development of technological processes for obtaining of ecological materials based on nonmetallic minerals (RS-MESTD-Technological Development (TD or TR)-34013)