Rahmawati, Ajeng Nur and Dr. Ir. Sukardi, MS and Arie Febrianto Mulyadi, STP, MP (2022) Studi Kinetika Adsorpsi Minyak Goreng Bekas Menggunakan Karbon Aktif Dari Kulit Jagung (Zea mays, L.). Sarjana thesis, Universitas Brawijaya.
Abstract
Jagung merupakan salah satu produk pertanian terbesar di Indonesia. Tingginya produktivitas tanaman jagung menyebabkan jumlah limbah tanaman jagung meningkat, salah satunya adalah limbah kulit jagung. Kulit jagung mengandung 15% lignin; 5,09% abu; 4,57 alkohol-sikloheksana; dan 44,08% selulosa. Kandungan selulosa dalam kulit jagung yang merupakan kandungan terbesar (44,08%) dapat digunakan sebagai adsorben. Adsorben digunakan untuk mengadsorpsi zat pengotor melalui proses adsorpsi, adsorben yang digunakan pada penelitian ini adalah karbon aktif dari kulit jagung. Penggunaan karbon aktif kulit jagung dapat diaplikasikan pada proses adsorpsi minyak goreng bekas untuk menurunkan kadar asam lemak bebas dan bilangan peroksida.. Rancangan peneltian yang digunakan adalah RAK dengan satu faktor perlakuan yaitu waktu kontak adsorpsi. Waktu kontak adsorpsi terdiri dari 6 level yaitu (15, 30, 45, 60, 75 dan 90 menit) dengan 3 kali perulangan. Selanjutnya dilakukan pengujian kadar air, kadar asam lemak bebas dan bilangan peroksida. Hasil penelitian didapatkan bahwa perlakuan terbaik diperoleh pada waktu adsorpsi 90 menit dengan rerata kadar air sebesar 0,0926%, rerata kadar asam lemak bebas sebesar 0,5480% dan rerata bilangan peroksida sebesar 10,0239 meq/kg. Model persamaan adsorpsi kadar asam lemak bebas dan bilangan peroksida mengikuti persamaan adsorpsi isoterm Freundlich dengan nilai R2 masing-masing yaitu 0.9028 dan 0,8285. Model kinetika adsorpsi kadar asam lemak bebas dan bilangan peroksida mengikuti model kinetika orde dua semu dengan nilai R2 masing-masing yaitu 0.9488 dan 0,9980.
English Abstract
Corn is one of the largest agricultural products in Indonesia. The high productivity of corn plants causes the amount of corn plant waste to increase, one of which is corn husk waste. Corn husk contains 15% lignin; 5.09% ash; 4.57 alcohol-cyclohexane; and 44.08% cellulose. The cellulose content in corn husk can be used as an adsorbent. The adsorbent is used to adsorb impurities through the adsorption process, the adsorbent used in this study is activated carbon from the corn husk. The use of corn husk-activated carbon can be applied to the adsorption process of used cooking oil to reduce free fatty acid levels and peroxide value. Factors that affect the adsorption process include contact time, surface area, temperature, pH and solubility of the adsorbate. The research design used was a RBD with one treatment factor which is adsorption contact time. The adsorption contact time consisted of 6 levels (15, 30, 45, 60, 75 and 90 minutes) with 3 repetitions. Furthermore, testing of water content, free fatty acid levels and peroxide value. The results showed that the best was obtained at an adsorption time of 90 minutes with an average water content of 0.0926%, an average free fatty acid content of 0.5480% and an average peroxide value of 10.0239 meq/kg. The adsorption isotherm model for free fatty acid content and peroxide value followed the Freundlich isotherm adsorption equation with R2 values of 0.9028 and 0.8285, respectively. The kinetic model of adsorption of free fatty acids and peroxide values followed a pseudo-second-order kinetic model with R2 values of 0.9488 and 0.9980
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0522100305 |
| Uncontrolled Keywords: | Adsorpsi; Karbon Aktif; Model Isoterm; Model Kinetika; Waktu Kontak,Activated Carbon, Adsorption, Contact Time, Isotherm Model, Kinetic Model |
| Subjects: | 300 Social sciences > 338 Production > 338.1 Agriculture > 338.16 Production efficiency |
| Divisions: | Fakultas Teknologi Pertanian > Teknologi Industri Pertanian |
| Depositing User: | soegeng sugeng |
| Date Deposited: | 04 Jan 2023 02:57 |
| Last Modified: | 04 Jan 2023 02:57 |
| URI: | http://repository.ub.ac.id/id/eprint/196582 |
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