Fernanda, Neysha Ayu (2017) Pemanenan Mikroalga Chlorella Vulgaris Dengan Menggunakan Membran Ultrafiltrasi Berbasis Getaran Sebagai Antifouling. Sarjana thesis, Universitas Brawijaya.
Abstract
Beberapa tahun belakangan ini dunia dilanda krisis energi. Untuk memenuhi kebutuhan energi salah satunya menggunakan mikroalga. Mikroalga sejenis makhluk hidup unisel berukuran mikro. Salah satu jenisnya, yaitu Chlorella vulgaris. Mikroalga memiliki kandungan esensial seperti lipid. Untuk mendapatkan lipid ini dengan cara pemanenan mikroalga. Salah satunya filtrasi menggunakan membran. Namun, terdapat kendala adanya fouling yang mengurangi hasil fluks itu sendiri. Untuk mengatasi masalah tersebut perlu ditambah vibrasi agar mengurangi fouling. Penelitian ini bertujuan mengetahui pengaruh perbedaan tekanan aliran dan kecepatan vibrasi terhadap fluks yang dihasilkan pada teknologi membran ultrafiltrasi bila ditambahkan vibrasi. Penelitian ini menggunakan metode eksperimental deskriptif dengan variasi tekanan, yaitu 0.5 bar, 0.75 bar, dan 1 bar, serta kecepatan vibrasi, yaitu tanpa vibrasi, 350 ±50 rpm, dan 750 ±50 rpm. Dari hasil tersebut dapat dilihat pengaruhnya terhadap fluks. Dari penelitian ini didapatkan data kepadatan sel mikroalga, hasil fluks, dan densitas sel sebelum filtrasi dan sesudah filtrasi (gelas ukur dan akuarium). Hasil dari penelitian ini menunjukkan perbedaan tekanan aliran, yaitu semakin besar tekanan aliran, maka semakin kecil fluks yang dihasilkan. Perbedaan kecepatan vibrasi, yakni semakin tinggi kecepatan vibrasi (750 ±50 rpm), maka semakin sedikit fouling. Perbedaan antara hasil fluks kontrol dan filtrasi yang ditambahkan vibrasi tidak signifikan, namun masih lebih tinggi nilai fluks filtrasi yang ditambahkan vibrasi.
English Abstract
In recent years the world has been hit by a crisis energy. To achive energy needs can use microalgae. Microalga is organism that have micro size. One of its kind, namely Chlorella vulgaris. Microalgae have essential ingredients such as lipids. These lipids can be an alternative energy. To obtain this lipid is harvesting microalgae. One of the method is filtration using a membrane. However, there are some problem about the technology is fouling which can reduce the flux. To overcome this problems need to add a vibration to reduce the fouling. The aim of this research is to know the effect of pressure flow difference and vibration velocity on flux that produced by ultrafiltration membrane technology when added vibration. This research uses descriptive experimental method with variation of pressure, are 0.5 bar, 0.75 bar, and 1 bar, and variation of vibration velocity, are without vibration, 350 ±50 rpm, and 750 ±50 rpm. From these results we can see the effect of the flux. From this research we can get data of microalga cell density, flux result, and cell density before filtration and after filtration (in the measuring glass and aquarium). The results of this research show the difference in flow pressure, i.e more higher the flow pressure, more smaller flux can get. The difference in vibration speed, i.e, more higher the vibration speed (750 ±50 rpm), less fouling can get. The difference between the result of control flux and the added vibration filtration is not significant, but still higher the filtration flux value added by vibration.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FTP/2017/726/051800039 |
| Uncontrolled Keywords: | Chlorella vulgaris, Pemanenan Mikroalga, Ultrafiltrasi, Vibrasi |
| Subjects: | 600 Technology (Applied sciences) > 631 Specific techniques; apparatus, equipment materials > 631.5 Cultivation and harvesting > 631.55 Harvesting |
| Divisions: | Fakultas Teknologi Pertanian > Keteknikan Pertanian |
| Depositing User: | Yusuf Dwi N. |
| Date Deposited: | 26 Jan 2018 02:37 |
| Last Modified: | 03 Nov 2021 01:45 |
| URI: | http://repository.ub.ac.id/id/eprint/8448 |
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