Efektivitas Temperatur dan pH Biosorpsi terhadap Membran Nano Chitosan Oligosaccharide sebagai Adsorben Logam Platinum pada Proses Hidrometalurgi

Aqiilah, Ghani (2024) Efektivitas Temperatur dan pH Biosorpsi terhadap Membran Nano Chitosan Oligosaccharide sebagai Adsorben Logam Platinum pada Proses Hidrometalurgi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Logam platinum merupakan logam dalam kelompok Platinum Group Metal yang kebutuhannya di berbagai bidang terus meningkat. Pada umumnya, ekstraksi logam platinum banyak menggunakan larutan asam dan menghasilkan limbah yang beracun. Adapun metode adsorpsi logam platinum juga masih menghasilkan banyak limbah dan kurang ekonomis. Biosorpsi merupakan salah satu metode alternatif yang ramah lingkungan untuk ekstraksi logam mulia. Penggunaan energi yang kecil, ekonomis, dapat didaur ulang, namun tetap mampu untuk mengadsorpsi logam mulia menjadi alasan utama penggunaan membran nano kitosan oligosakarida sebagai bioadsorben. Parameter pH dan temperatur pada proses adsorpsi divariasikan pada pH 1,5; 2; dan 2,5 beserta temperatur 35°C, 45°C , dan 55°C. Proses adsorpsi dilakukan dalam waktu 4 jam dengan agitasi 200 rpm. Kemudian pengujian UV-Vis dilakukan pada larutan sisa adsorpsi serta pengujian FTIR pada membran nano kitosan oligosakarida. Hasil pengujian tersebut akan dibandingkan dengan hasil pengujian sebelum proses adsorpsi. Kemudian dilakukan proses desorpsi menggunakan larutan EDTA 0,1 M selama 4 jam. Hasil pada penelitian menunjukkan kapasitas adsorpsi logam platinum pada membran akan semakin tinggi pada pH dan temperatur yang rendah. Adsorpsi paling optimal berada pada variasi pH 1,5 dengan temperatur 35°C yang mampu mengadsorp hingga 375,96 ppm dengan efisiensi adsorpsi membran sebesar 31,37 %.
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Platinum is one of the metals in the Platinum Group Metals, whose demand in various fields continues to increase. In general, the extraction of platinum metal uses acid solutions and produces toxic waste. The platinum metal adsorption method also still produces a lot of waste and is less economical. Biosorption is one of the most environmentally friendly alternative methods for precious metal extraction. The use of a low-energy, economical, recyclable membrane that is still able to adsorb precious metals is the main reason for using nano-chitosan oligosaccharide membranes as bioadsorbents. The pH and temperature parameters in the adsorption process are varied at pH 1,5; 2; and 2,5, along with temperatures of 35°C, 45°C, and 55°C. The adsorption process will be carried out within 4 hours with 200 rpm agitation. Then UV-Vis test were carried out on the remaining adsorption solution, as well as FTIR mapping test on the nano-COS membrane. The test results will be compared with the test results before the adsorption process. Then the desorption process was carried out using a 0.1 M EDTA solution for 4 hours. The results showed that the adsorption capacity of platinum metal on the membrane will be higher at low pH and temperatures. The most optimal adsorption was at a pH variation of 1.5 with a temperature of 35 °C, which was able to adsorb up to 375.96 ppm with a membrane adsorption efficiency of 31.37%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Adsorpsi, Biosorpsi, Kitosan, pH, Platinum, Temperatur, Adsorption, Biosorption, Chitosan, Temperature
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN688 Hydrometallurgy T Technology > TP Chemical technology > TP159.M4 Membranes (Technology) T Technology > TP Chemical technology > TP248.65.C55 Chitosan--Biotechnology.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Ghani Aqiilah
Date Deposited:	04 Sep 2024 04:17
Last Modified:	04 Sep 2024 04:17
URI:	http://repository.its.ac.id/id/eprint/110924

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