ADSORPSI ION Pb2+ DAN SO4 2- PADA BENTONIT TERMODIFIKASI CETILTRIMETILAMMONIUM
| Main Authors: | , MAISARI UTAMI, , Dr. Sutarno, M.Si. |
|---|---|
| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2014
|
| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/131615/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=72113 |
Daftar Isi:
- Adsorption of Pb 2+ and SO4 2- ions by N-cetyl-N,N,N-trimethylammonium (CTA + ) cationic surfactant modified bentonite has been studied. The research was started by washing bentonite of Thailand using 1.5 M sulfuric acid followed by modification using CTA + surfactant with concentration as much as twice of cation exchange capacity (CEC). The CTA + modified bentonite was then used for adsorption of Pb 2+ and SO4 2- ions. The bentonite samples were characterized by FTIR spectrometry and X-ray diffraction methods, whereas the analysis of Pb 2+ cation was measured by AAS and the analysis of SO4 2- anion was measured by UV-Vis spectrophotometer. Results showed that major mineral component of bentonite was montmorillonite and acid activation process caused dealumination. The adsorption process of Pb 2+ and SO4 2- on CTA-bentonite followed the Langmuir adsorption isotherm. The value of adsorption capacity was 7.42 x 10 -5 mol/g for SO4 2- and 1.38 x 10 -5 mol/g for Pb 2+ . Meanwhile, the adsorption energy was 23.90 kJ/mol for SO 4 2- and 33.28 kJ/mol for Pb 2+ . The adsorption capability of Pb 2+ on natural bentonite > activated bentonite > CTA bentonite and the adsorption capability of SO4 2- on CTA-bentonite > activated bentonite > natural bentonite.