AyikFerryanata (2009) Adsorpsi Fosfat pada Membran Kitosan–Glutaraldehid. Sarjana thesis, Universitas Brawijaya.
Abstract
Membran kitosan-glutaraldehid memiliki pori-pori. dan dapat menjadi senyawa kationik pada suasana asam sehingga dapat digunakan untuk mengadsorpsi suatu anion seperti fosfat. Adsorpsi fosfat dapat dipengaruhi oleh pH larutan. Membran kitosan-glutaraldehid tidak larut dalam asam seperti asam sulfat, sehingga asam sulfat digunakan untuk mendesorpsi fosfat. Tujuan dari penelitian ini meliputi penentuan karakter fisik membran kitosan-glutaraldehid, penentuan pengaruh waktu adsorpsi, penentuan kapasitas adsorpsi fosfat, dan penentuan konsentrasi optimum H 2SO4 untuk mendesorpsi fosfat. Pengaruh waktu adsorpsi fosfat diamati sampai 24 jam kontak pada pH 5 dengan konsentrasi fosfat 5 mg PO4 3-/L. Adsorpsi fosfat diamati pada pH larutan 2, 5, 8 dan 10 dengan konsentrasi larutan fosfat 0; 2,5; 5; 8; 10; 15 dan 25 mg PO43-/L. Desorpsi dilakukan dengan asam sulfat 0,10 M, 0,20 M dan 0,25 M. Dari hasil penelitian diperoleh bahwa membran yang telah dibuat berwarna putih kekuningan, ketebalan 1,07 mm, massa 0,708 g, dan kadar air 88 %.. Fosfat teradsorpsi cepat dalam 30 dan 60 detik pertama dengan jumlah fosfat teradsorpsi berturut-turut sebesar 22 % dan 20 %. Fosfat dapat diadsorpsi pada membran kitosan–glutaraldehid pada pH 5 dan 8. Nilai Qmak dan K pada pH 5 dan 8 masing-masing adalah 0,4775 mg PO43-/g dan 14,1302 L/mg PO43-; 0,1075 mg PO43-/g dan 0,3856 L/mg PO43-. Fosfat dapat didesorpsi secara optimum dengan H2SO4 0,20 M sebanyak 99 %.
English Abstract
Pores of chitosan–glutaraldehyde membranes and its cationic sites in acid condition can be functioned as an adsorbent for anion adsorption such as phosphate ion. The phosphate adsorption could be affected by the pH of solution. Chitosan–glutaraldehyde membranes could not be dissolved such as in sulfuric acid. Hence, sulfuric acid could be used to desorb phosphate from the membranes. The aims of this research were to determine of physical characteristics of chitosan–glutaraldehyde membranes, to investigate the effect of adsorption time, to determine the adsorption capacity of phosphate, and to determine the optimum concentration of sulfuric acid for phosphate desorption. The effect of adsorption time was investigated up to 24 hours by shaking of 5 mg PO 4 3-/L at pH 5. Adsorption was investigated at pH solution of 2, 5, 8 and 10 by using various concentrations of phosphate at 0; 2.5; 5; 8; 10; 15 dan 25 mg PO43-/L. Desorption have been carried out by sulfuric acid 0.10 M, 0.20 M and 0.25 M. As a result, chitosan–glutaraldehyde membranes had yellow–white in colour with 1.07 mm thickness, 0.708 g of mass and 88 % water content. Phosphate was adsorbed fast at the first 30 and 60 seconds with the amount of phosphate adsorbed were 22 % dan 20 %, respectively. Phosphate could be adsorbed on to the chitosan-glutaraldehyde membranes at pH 5 and 8. The value of Qmak and K at pH 5 and 8 were 0.4775 mg PO43-/g and 14.1302 L/mg PO43-; 0.1075 mg PO43-/g and 0.3856 L/mg PO43-, respectively. Phosphate could be desorbed optimally by using sulfuric acid 0.20 M as much as 99 %.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2009/192/050902214 |
| Subjects: | 500 Natural sciences and mathematics > 510 Mathematics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Matematika |
| Depositing User: | Unnamed user with email repository.ub@ub.ac.id |
| Date Deposited: | 14 Aug 2009 10:20 |
| Last Modified: | 22 Oct 2021 06:38 |
| URI: | http://repository.ub.ac.id/id/eprint/152149 |
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