Adsorption Of Direct Red 80 Dye Onto ZnAlNO3 – (Hydrotalcite-like) compound / Nur Syazana Azizan
Removal of Direct Red 80 from aqueous solutions by adsorption onto hydrotalcite particles was investigated using batch rate experiments. Layered double hydroxides of aluminium and zinc (Zn/Al-LDH) with the molar ratio of 4:1 were prepared by synthesized using a co-precipitation method as reported...
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| Format: | Student Project |
| Language: | English |
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Faculty of Applied Sciences
2009
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| Online Access: | http://ir.uitm.edu.my/id/eprint/768/ http://ir.uitm.edu.my/id/eprint/768/1/PPb_NUR%20SYAZANA%20AZIZAN%20AS%2009_5%20P01.pdf |
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uitm-7682018-10-24T02:48:57Z http://ir.uitm.edu.my/id/eprint/768/ Adsorption Of Direct Red 80 Dye Onto ZnAlNO3 – (Hydrotalcite-like) compound / Nur Syazana Azizan Azizan, Nur Syazana QD Chemistry Removal of Direct Red 80 from aqueous solutions by adsorption onto hydrotalcite particles was investigated using batch rate experiments. Layered double hydroxides of aluminium and zinc (Zn/Al-LDH) with the molar ratio of 4:1 were prepared by synthesized using a co-precipitation method as reported. Measurements are performed at various initial concentrations, pH values, temperature, particles size and adsorbent dosage. Characterization of LDH using X-Ray Diffractogram showed the presence of sharp and intense peaks with the d-spacing 7.6 Å which signifying high crystallinity. Fourier Transform Infrared Spectroscopy FTIR, confirmed the impurity inorganic charge balancing anions, Nitro group presence at 1384.27 cm-1. From Scanning Electron Microscope (SEM) after adsorption, LDH particles were packed with DR 80 compared before. DR 80 can adsorbed on the surface or enter the interlayer region of LDH by anion exchange. In the adsorption of DR 80 on the LDH, maximum uptake or removal was achieved at 99% at 50 mg/L concentration of dye at an equilibrium time of 1 hour, with 0.2 g of LDH, 425 μm particles size of LDH and at 30ºC. Isotherms for DR 80 dye sorption LDH were described using the Langmuir and Freundlich isotherm. The best fit equilibrium model was Langmuir isotherms followed by Freundlich isotherm. From Langmuir, adsorption capacity was found to be 36.364 mg/g. From Freundlich isotherm, n was 22.831 which indicate that it was not fitted well to explain the adsorption of DR 80 onto LDH. As conclusion, adsorption experiments confirmed that LDH was effective in remove of DR 80 from aqueous solution Faculty of Applied Sciences 2009 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/768/1/PPb_NUR%20SYAZANA%20AZIZAN%20AS%2009_5%20P01.pdf Azizan, Nur Syazana (2009) Adsorption Of Direct Red 80 Dye Onto ZnAlNO3 – (Hydrotalcite-like) compound / Nur Syazana Azizan. [Student Project] (Unpublished) |
| repository_type |
Digital Repository |
| institution_category |
Local University |
| institution |
Universiti Teknologi MARA |
| building |
UiTM Institutional Repository |
| collection |
Online Access |
| language |
English |
| topic |
QD Chemistry |
| spellingShingle |
QD Chemistry Azizan, Nur Syazana Adsorption Of Direct Red 80 Dye Onto ZnAlNO3 – (Hydrotalcite-like) compound / Nur Syazana Azizan |
| description |
Removal of Direct Red 80 from aqueous solutions by adsorption onto hydrotalcite
particles was investigated using batch rate experiments. Layered double hydroxides of
aluminium and zinc (Zn/Al-LDH) with the molar ratio of 4:1 were prepared by
synthesized using a co-precipitation method as reported. Measurements are performed at
various initial concentrations, pH values, temperature, particles size and adsorbent
dosage. Characterization of LDH using X-Ray Diffractogram showed the presence of
sharp and intense peaks with the d-spacing 7.6 Å which signifying high crystallinity.
Fourier Transform Infrared Spectroscopy FTIR, confirmed the impurity inorganic charge
balancing anions, Nitro group presence at 1384.27 cm-1. From Scanning Electron
Microscope (SEM) after adsorption, LDH particles were packed with DR 80 compared
before. DR 80 can adsorbed on the surface or enter the interlayer region of LDH by anion
exchange. In the adsorption of DR 80 on the LDH, maximum uptake or removal was
achieved at 99% at 50 mg/L concentration of dye at an equilibrium time of 1 hour, with
0.2 g of LDH, 425 μm particles size of LDH and at 30ºC. Isotherms for DR 80 dye
sorption LDH were described using the Langmuir and Freundlich isotherm. The best fit
equilibrium model was Langmuir isotherms followed by Freundlich isotherm. From
Langmuir, adsorption capacity was found to be 36.364 mg/g. From Freundlich isotherm,
n was 22.831 which indicate that it was not fitted well to explain the adsorption of DR 80
onto LDH. As conclusion, adsorption experiments confirmed that LDH was effective in
remove of DR 80 from aqueous solution |
| format |
Student Project |
| author |
Azizan, Nur Syazana |
| author_facet |
Azizan, Nur Syazana |
| author_sort |
Azizan, Nur Syazana |
| title |
Adsorption Of Direct Red 80 Dye Onto ZnAlNO3 – (Hydrotalcite-like) compound / Nur Syazana Azizan |
| title_short |
Adsorption Of Direct Red 80 Dye Onto ZnAlNO3 – (Hydrotalcite-like) compound / Nur Syazana Azizan |
| title_full |
Adsorption Of Direct Red 80 Dye Onto ZnAlNO3 – (Hydrotalcite-like) compound / Nur Syazana Azizan |
| title_fullStr |
Adsorption Of Direct Red 80 Dye Onto ZnAlNO3 – (Hydrotalcite-like) compound / Nur Syazana Azizan |
| title_full_unstemmed |
Adsorption Of Direct Red 80 Dye Onto ZnAlNO3 – (Hydrotalcite-like) compound / Nur Syazana Azizan |
| title_sort |
adsorption of direct red 80 dye onto znalno3 – (hydrotalcite-like) compound / nur syazana azizan |
| publisher |
Faculty of Applied Sciences |
| publishDate |
2009 |
| url |
http://ir.uitm.edu.my/id/eprint/768/ http://ir.uitm.edu.my/id/eprint/768/1/PPb_NUR%20SYAZANA%20AZIZAN%20AS%2009_5%20P01.pdf |
| first_indexed |
2023-09-18T22:45:01Z |
| last_indexed |
2023-09-18T22:45:01Z |
| _version_ |
1777417166336819200 |