AMARAL, JOVANIO BOSCO CHU GOMES and RATNASARI, DESI (2016) PENGARUH PERUBAHAN SUHU PADA PROPERTI ADSORPSI DAN DESORPSI THERMOSENSITIVE NIPAM-co-DMAAPS GEL. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Gel adsorben yang memiliki kemampuan mengadsorpsi
dan mendesorpsi ion secara simultan dengan perubahan suhu
(temperature swing) dihasilkan melalui reaksi kopolimerisasi
radikal bebas antara N-isopropylacrylamide (NIPAM), dan N,Ndimethyl(
acrylamidopropyl)ammonium propane sulfonate
(DMAAPS). NIPAM dipergunakan sebagai agen thermosensitive
dan DMAAPS digunakan sebagai agen pengadsorpsi. Tujuan dari
penelitian ini adalah untuk mempelajari pengaruh perubahan suhu
terhadap properti swelling, adsorpsi, dan desorpsi ion pada
thermosensitive NIPAM-co-DMAAPS gel dan hubungan antara
properti-properti tersebut. NaNO3 dipergunakan sebagai larutan
uji dalam mempelajari properti swelling, adsorpsi, dan desorpsi.
Uji swelling dilakukan dengan mengukur diameter dari silinder
gel pada keadaan kering dan setelah kontak dengan larutan
NaNO3 selama 12 jam. Untuk uji adsorpsi dilakukan dengan
memasukkan satu gram crush gel ke dalam 20 ml larutan NaNO3
pada berbagai konsentrasi dan suhu selama 12 jam yang disertai
dengan pengadukan. Sedangkan uji desorpsi dilakukan dengan
memasukkan gel yang diperoleh pada uji adsorpsi yang telah
dikeringkan sebelumnya ke dalam distilled water selama 12 jam
1. Jovanio Bosco C. G. A. 2311 100 085
2. Desi Ratnasari 2311 100 105
1. Dr. Eva Oktavia Ningrum, ST., MS.
2. Prida Novarita Trisanti, ST., M.T.
pada suhu yang ditetapkan disertai dengan pengadukan. Gel hasil
adsorpsi dan desorpsi dipisahkan dari larutannya untuk
mendapatkan konsentrasi larutan akhir, kemudian larutan ini
dianalisa menggunakan Atomic Absorption Spectrophotometry
(AAS) Dari hasil penelitian diketahui bahwa pada suhu tinggi,
adsorpsi ion pada kopolimer gel nilainya rendah namun
prosentase desorpsi dan nilai swelling degree cenderung tinggi.
Nilai dari swelling degree, adsopsi, dan desorpsi ion pada
kopolimer gel juga berbanding lurus terhadap konsentrasi larutan
NaNO3 yang digunakan. Berdasarkan hubungan antara properti
swelling dan adsorpsi dapat disimpulkan bahwa pada nilai
swelling degree yang rendah, adsorpsi ion pada kopolimer gel
menunjukkan nilai yang konstan. Namun dengan meningkatnya
nilai swelling degree, adsorpsi ion cenderung menurun. ====================================================================================== Adsorbent gels with ability to adsorb and desorb ion
simultaneously with temperature swing are synthesized by free
radical copolymerization reaction of N-isopropylacrylamide
(NIPAM) and N,N-dimethyl(acrylamidopropyl)ammonium
propane sulfonate (DMAAPS). In this study, NIPAM acts as a
thermosensitive agent and DMAAPS as an adsorbent agent. The
purposes of this research are to investigate the effects of
temperature on the swelling, adsorption and desorption behaviors
of ion onto thermosensitive NIPAM-co-DMAAPS gel, and to
study the relationship between these behaviors. NaNO3 solution
was selected as the target solution and used in swelling,
adsorption and desorption test. Swelling test was done by
measuring diameter of the cylindrical gel after and before
immersion in the NaNO3 solution for 12 hours. Adsorption test
was carried out by introducing one gram grinded gels into 20 ml
NaNO3 solution of desired concentration and temperature under
stirring for 12 hours. Conversely, desorption test was performed
by introducing the gels which were obtained from adsorption
experiment and dried previously, into distilled water at the desired
temperature and stirred gently for 12 hours. After adsorption and
desorption, the gels were removed from the solution by centrifuge
in order to measure the residual ion concentration in the solution.
1. Jovanio Bosco C. G. Amaral 2311 100 085
2. Desi Ratnasari 2311 100 105
1. Dr. Eva Oktavia Ningrum, ST., MS.
2. Prida Novarita Trisanti, ST., M.T.
The concentrations of the solutions which were obtained from
adsorption and desorption experiment were then analyzed by
atomic Absorption Spectrophotometry (AAS). The swelling
degree of the gels as measured by using millimeter block. The
result revealed that at high temperature, the amount of ion
adsorbed by the gels was low. On the contrary, the gel exhibited a
high degree of swelling and high amount of ion desorbed by the
gel. Moreover, higher concentration of NaNO3 resulting in the
higher value of the swelling degree, adsorption and desorption
ability. Based on the relationship between the swelling properties
and adsorption properties, it can be concluded that at a lower
degree of swelling, the amount of ion adsorbed onto copolymer
gel showed a constant value. However, the amount of ion
adsorbed decrease with further increasing the swelling degree.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | thermosensitive, adsorpsi, desorpsi, swelling degree, thermosensitive, adsorption, desorption, swelling degree |
| Subjects: | T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles. |
| Divisions: | Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 16 Jan 2017 06:14 |
| Last Modified: | 26 Dec 2018 03:08 |
| URI: | http://repository.its.ac.id/id/eprint/1610 |
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