STUDI DESORPSI UREA PADA HUMIN SINTETIS STUDY OF UREA DESORPTION ON THE SINTETIC HUMIN
Study on the determination of urea desorption kinetic on the synthetic humin has been carried out. The synthetic humin was obtained as the residue of extraction of synthetic humus with NaOH 0.5 M. The Fourier Transform Infra Red (FT-IR) spectroscopy was used to characterize its functi...
| Main Authors: | , |
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| Format: | Thesis |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| Subjects: |
| _version_ | 1826048630782427136 |
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| author | , IKA AMBARSARI , Dr. Agus Kuncaka, DEA |
| author_facet | , IKA AMBARSARI , Dr. Agus Kuncaka, DEA |
| author_sort | , IKA AMBARSARI |
| collection | UGM |
| description | Study on the determination of urea desorption kinetic on the synthetic humin
has been carried out. The synthetic humin was obtained as the residue of extraction
of synthetic humus with NaOH 0.5 M. The Fourier Transform Infra Red (FT-IR)
spectroscopy was used to characterize its functional groups. The activity of urea on
the synthetic humin was determined by varying urea concentration on the adsorbate
solution until the equilibrium of urea adsorption and desorption was achieved. The
urea desorption kinetic determined by evaluating of urea being unreleased from
synthetic humin as a function of time, the dependence of pH on the urea desorption
kinetic also was evaluated. Urea was analyzed using spectrophotometer UV-Visible.
The p-dimethylamino benzaldehide (PDAB) and HCl 0.1 M were used as reagents.
Characterization result using FT-IR showed that the synthetic humin from
extract residue had absorption bands at 3426 cm
-1
(bending vibration of hydroxyl
group of phenol and N-H stretching of amine group), 2932 cm
-1
(stretching vibration
of C-H sp
3
group), 1705 cm
-1
(stretching vibration of C=O), 1582 cm
-1
(bending
vibration of C=C aromatic group), 1096 cm
-1
(stretching vibration of C-O) and 470
cm
-1
(bending vibration of Si-O-Si group). The kinetic of urea desorption was
independent with the pH. The urea activity at the equilibrium of urea adsorption and
desorption was 124.45 mg/L. The model of kinetic urea desorption showed that the
urea released from humin synthetic followed first order with R
2
was 0.9957 and the
constant of kinetic desorption (k) was 4.5 x 10
-6
per second. |
| first_indexed | 2024-03-13T23:33:10Z |
| format | Thesis |
| id | oai:generic.eprints.org:131476 |
| institution | Universiti Gadjah Mada |
| last_indexed | 2024-03-13T23:33:10Z |
| publishDate | 2014 |
| publisher | [Yogyakarta] : Universitas Gadjah Mada |
| record_format | dspace |
| spelling | oai:generic.eprints.org:1314762016-03-04T07:57:14Z https://repository.ugm.ac.id/131476/ STUDI DESORPSI UREA PADA HUMIN SINTETIS STUDY OF UREA DESORPTION ON THE SINTETIC HUMIN , IKA AMBARSARI , Dr. Agus Kuncaka, DEA ETD Study on the determination of urea desorption kinetic on the synthetic humin has been carried out. The synthetic humin was obtained as the residue of extraction of synthetic humus with NaOH 0.5 M. The Fourier Transform Infra Red (FT-IR) spectroscopy was used to characterize its functional groups. The activity of urea on the synthetic humin was determined by varying urea concentration on the adsorbate solution until the equilibrium of urea adsorption and desorption was achieved. The urea desorption kinetic determined by evaluating of urea being unreleased from synthetic humin as a function of time, the dependence of pH on the urea desorption kinetic also was evaluated. Urea was analyzed using spectrophotometer UV-Visible. The p-dimethylamino benzaldehide (PDAB) and HCl 0.1 M were used as reagents. Characterization result using FT-IR showed that the synthetic humin from extract residue had absorption bands at 3426 cm -1 (bending vibration of hydroxyl group of phenol and N-H stretching of amine group), 2932 cm -1 (stretching vibration of C-H sp 3 group), 1705 cm -1 (stretching vibration of C=O), 1582 cm -1 (bending vibration of C=C aromatic group), 1096 cm -1 (stretching vibration of C-O) and 470 cm -1 (bending vibration of Si-O-Si group). The kinetic of urea desorption was independent with the pH. The urea activity at the equilibrium of urea adsorption and desorption was 124.45 mg/L. The model of kinetic urea desorption showed that the urea released from humin synthetic followed first order with R 2 was 0.9957 and the constant of kinetic desorption (k) was 4.5 x 10 -6 per second. [Yogyakarta] : Universitas Gadjah Mada 2014 Thesis NonPeerReviewed , IKA AMBARSARI and , Dr. Agus Kuncaka, DEA (2014) STUDI DESORPSI UREA PADA HUMIN SINTETIS STUDY OF UREA DESORPTION ON THE SINTETIC HUMIN. UNSPECIFIED thesis, UNSPECIFIED. http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=71972 |
| spellingShingle | ETD , IKA AMBARSARI , Dr. Agus Kuncaka, DEA STUDI DESORPSI UREA PADA HUMIN SINTETIS STUDY OF UREA DESORPTION ON THE SINTETIC HUMIN |
| title | STUDI DESORPSI UREA PADA HUMIN SINTETIS STUDY OF UREA DESORPTION ON THE SINTETIC HUMIN |
| title_full | STUDI DESORPSI UREA PADA HUMIN SINTETIS STUDY OF UREA DESORPTION ON THE SINTETIC HUMIN |
| title_fullStr | STUDI DESORPSI UREA PADA HUMIN SINTETIS STUDY OF UREA DESORPTION ON THE SINTETIC HUMIN |
| title_full_unstemmed | STUDI DESORPSI UREA PADA HUMIN SINTETIS STUDY OF UREA DESORPTION ON THE SINTETIC HUMIN |
| title_short | STUDI DESORPSI UREA PADA HUMIN SINTETIS STUDY OF UREA DESORPTION ON THE SINTETIC HUMIN |
| title_sort | studi desorpsi urea pada humin sintetis study of urea desorption on the sintetic humin |
| topic | ETD |
| work_keys_str_mv | AT ikaambarsari studidesorpsiureapadahuminsintetisstudyofureadesorptiononthesintetichumin AT draguskuncakadea studidesorpsiureapadahuminsintetisstudyofureadesorptiononthesintetichumin |