KOMPOSIT PVA/KITOSAN DAN PVA/MgAl-LDH/KITOSAN BEADS UNTUK ADSORPSI Cr(VI)
Polyvinyl alcohol/chitosan (PVA/chitosan) and Polyvinyl alcohol/chitosan composite beads containing MgAl layered double hydroxide (PVA/MgAlLDH/chitosan) were synthesized for the adsorption of chrome hexavalen. The composites were characterized with Fourier transform infrared sp...
| Main Authors: | , |
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| Format: | Thesis |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| Subjects: |
| _version_ | 1826049110719856640 |
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| author | , Deni Agustriawan , Prof. Drs. Sri Juari Santosa, M.Eng., Ph.D. |
| author_facet | , Deni Agustriawan , Prof. Drs. Sri Juari Santosa, M.Eng., Ph.D. |
| author_sort | , Deni Agustriawan |
| collection | UGM |
| description | Polyvinyl alcohol/chitosan (PVA/chitosan) and Polyvinyl alcohol/chitosan
composite beads containing MgAl layered double hydroxide (PVA/MgAlLDH/chitosan) were synthesized for the adsorption of chrome hexavalen. The
composites were characterized with Fourier transform infrared spectroscopy
(FTIR), X-Ray Diffraction (XRD) and scanning electron microscopy � energy
dispersive X-ray analysis (SEM-EDAX). Effect of pH, MgAl-LDH content in
composites, contact time, initial concentration of HCrO4
-and sulphate competitor
have been investigated on this research. Results showed that blending of PVA
with chitosan and LDH-chitosan beads significantly improved their stability in the
adsorption medium. Fifty percent deformation for MgAl-LDH/chitosan beads
without PVA content decreased to 0% with PVA content (PVA/chitosan = 1:1
mass ratio). Adsorption of HCrO4
-on PVA/chitosan and PVA/MgAlLDH/chitosan was optimum at pH 4 (1 : 0.25 mass ratio of chitosan/MgAl-LDH).
The adsorption of HCrO4
-reached equilibrium at 90 min. Adsorption HCrO4
-on
both composite followed Ho pseudo second order kinetic and the adsorption
equilibrium followed Langmuir isotherm model. The adsorption capacities of
PVA/chitosan and PVA/MgAl-LDH/chitosan were 3.6 mg/g and 4.4 mg/g,
respectively. The increased of sulphate in HCrO4
-solution decreased adsorption of
HCrO4
-up to 38.7% on PVA/chitosan and 36.3% on PVA/MgAl-LDH/chitosan at
mol ratio [HCrO4
-/[SO
4
2-]=1-100. Decrease of adsorption HCrO4
-on both
composites caused of competition with sulphate. |
| first_indexed | 2024-03-13T23:40:47Z |
| format | Thesis |
| id | oai:generic.eprints.org:133878 |
| institution | Universiti Gadjah Mada |
| last_indexed | 2024-03-13T23:40:47Z |
| publishDate | 2014 |
| publisher | [Yogyakarta] : Universitas Gadjah Mada |
| record_format | dspace |
| spelling | oai:generic.eprints.org:1338782016-03-04T07:55:14Z https://repository.ugm.ac.id/133878/ KOMPOSIT PVA/KITOSAN DAN PVA/MgAl-LDH/KITOSAN BEADS UNTUK ADSORPSI Cr(VI) , Deni Agustriawan , Prof. Drs. Sri Juari Santosa, M.Eng., Ph.D. ETD Polyvinyl alcohol/chitosan (PVA/chitosan) and Polyvinyl alcohol/chitosan composite beads containing MgAl layered double hydroxide (PVA/MgAlLDH/chitosan) were synthesized for the adsorption of chrome hexavalen. The composites were characterized with Fourier transform infrared spectroscopy (FTIR), X-Ray Diffraction (XRD) and scanning electron microscopy � energy dispersive X-ray analysis (SEM-EDAX). Effect of pH, MgAl-LDH content in composites, contact time, initial concentration of HCrO4 -and sulphate competitor have been investigated on this research. Results showed that blending of PVA with chitosan and LDH-chitosan beads significantly improved their stability in the adsorption medium. Fifty percent deformation for MgAl-LDH/chitosan beads without PVA content decreased to 0% with PVA content (PVA/chitosan = 1:1 mass ratio). Adsorption of HCrO4 -on PVA/chitosan and PVA/MgAlLDH/chitosan was optimum at pH 4 (1 : 0.25 mass ratio of chitosan/MgAl-LDH). The adsorption of HCrO4 -reached equilibrium at 90 min. Adsorption HCrO4 -on both composite followed Ho pseudo second order kinetic and the adsorption equilibrium followed Langmuir isotherm model. The adsorption capacities of PVA/chitosan and PVA/MgAl-LDH/chitosan were 3.6 mg/g and 4.4 mg/g, respectively. The increased of sulphate in HCrO4 -solution decreased adsorption of HCrO4 -up to 38.7% on PVA/chitosan and 36.3% on PVA/MgAl-LDH/chitosan at mol ratio [HCrO4 -/[SO 4 2-]=1-100. Decrease of adsorption HCrO4 -on both composites caused of competition with sulphate. [Yogyakarta] : Universitas Gadjah Mada 2014 Thesis NonPeerReviewed , Deni Agustriawan and , Prof. Drs. Sri Juari Santosa, M.Eng., Ph.D. (2014) KOMPOSIT PVA/KITOSAN DAN PVA/MgAl-LDH/KITOSAN BEADS UNTUK ADSORPSI Cr(VI). UNSPECIFIED thesis, UNSPECIFIED. http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=74760 |
| spellingShingle | ETD , Deni Agustriawan , Prof. Drs. Sri Juari Santosa, M.Eng., Ph.D. KOMPOSIT PVA/KITOSAN DAN PVA/MgAl-LDH/KITOSAN BEADS UNTUK ADSORPSI Cr(VI) |
| title | KOMPOSIT PVA/KITOSAN DAN PVA/MgAl-LDH/KITOSAN BEADS UNTUK ADSORPSI Cr(VI) |
| title_full | KOMPOSIT PVA/KITOSAN DAN PVA/MgAl-LDH/KITOSAN BEADS UNTUK ADSORPSI Cr(VI) |
| title_fullStr | KOMPOSIT PVA/KITOSAN DAN PVA/MgAl-LDH/KITOSAN BEADS UNTUK ADSORPSI Cr(VI) |
| title_full_unstemmed | KOMPOSIT PVA/KITOSAN DAN PVA/MgAl-LDH/KITOSAN BEADS UNTUK ADSORPSI Cr(VI) |
| title_short | KOMPOSIT PVA/KITOSAN DAN PVA/MgAl-LDH/KITOSAN BEADS UNTUK ADSORPSI Cr(VI) |
| title_sort | komposit pva kitosan dan pva mgal ldh kitosan beads untuk adsorpsi cr vi |
| topic | ETD |
| work_keys_str_mv | AT deniagustriawan kompositpvakitosandanpvamgalldhkitosanbeadsuntukadsorpsicrvi AT profdrssrijuarisantosamengphd kompositpvakitosandanpvamgalldhkitosanbeadsuntukadsorpsicrvi |