BENTONIT TERMODIFIKASI CETILTRIMETILAMMONIUM UNTUK ADSORPSI ION Cu2+ DAN ZAT WARNA ANIONIK EOSIN
| Main Authors: | , BRILIANA ARGAWATI, , Dr. Sutarno M.Si. |
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| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2014
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/131616/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=72114 |
Daftar Isi:
- Modification of natural bentonite with cethyltrimethylammonium bromide (CTAB) for adsorption of cationic and anionic subtances has been studied. Cu 2+ ion and eosin anionic dye were used as adsorbates in the research. The research was started by washing natural bentonite using 1,5 M sulfuric acid then modified using 2 cation exchange capacity (CEC) CTAB. Material was characterized by FTIR spectrometry and X-ray diffraction methods, meanwhile the adsorbed cation was measured by AAS and anion by UV-Vis spectrophotometry. Result showed that the major component of bentonite was montmorillonite. Acid activation caused dealumination in bentonite structure. Cu 2+ was adsorbed in pH 2, while eosin dye in pH 6. Adsorption of Cu 2+ and eosin anionic dye on CTA-bentonite followed a Langmuir adsorption isotherm model. Adsorption capacity of Cu 2+ was 6,28 x 10 -5 mol/g and eosin dye with 0,57 x 10 -5 mol/g. Adsorption energy of Cu 2+ was 27,20 kJ/mol lower than eosin with 32,75 kJ/mol. Meanwhile, adsorption capability of Cu 2+ on natural bentonite > activated bentonite > CTA-bentonite and natural bentonite < activated bentonite < CTA-bentonite for eosin.