Subyekti, Novia Rina (2020) Biosorpsi Zat Warna Methylene Blue oleh Aspergillus niger. Sarjana thesis, Universitas Brawijaya.
Abstract
Industri tekstil menimbulkan pencemaran lingkungan khususnya pada industri batik yang menghasilkan limbah zat warna. Salah satu zat warna yang digunakan yaitu methylene blue. Zat warna ini termasuk pewarna kationik tiazin yang dianggap sebagai polutan air, bersifat sangat toksik, karsinogenik dan mutagenik. Biosorpsi merupakan salah satu metode yang menggunakan biosorben untuk menghilangkan atau mengurangi polutan. Dalam metode biosorpsi ini digunakan biomassa jamur. Aspergillus niger dapat menurunkan kadar warna dari limbah cair dengan mengadsorpsi dan mensekresi enzim-enzim ekstraseluler. Proses biosorpsi dipengaruhi oleh beberapa faktor, diantaranya suhu, pH larutan, konsentrasi larutan dan waktu kontak. Penelitian ini difokuskan pada penentuan kondisi optimum dari pH larutan dan waktu kontak larutan dari zat warna. Larutan zat warna methylene blue diadsorpsi pada pH 4, 5, 6, 7, dan 8 dengan waktu kontak selama 10, 15, 20 dan 25 jam. Absorbansi larutan sebelum dan sesudah adsorpsi diukur menggunakan spektrofotometer visible. Pada penelitian ini diperoleh hasil biosorpsi pada kondisi optimum di pH 6 dengan waktu kontak selama 25 jam dan persen adsorpsi sebesar 67.53%.
English Abstract
The textile industry causes environmental pollution, especially in the batik industry which produces waste from synthetic dyes. One of the synthetic dyes used is methylene blue. Methylene blue contains cationic thiazine dyes which are considered as water pollutants, are very toxic, carcinogenic, and mutagenic. Biosorption is technique that used to remove or to reduce pollutants. In this current study, biosorbent used is from fungi. Aspergillus niger can reduce the color content of liquid waste by adsorbing and secreting extracellular enzymes. The biosorption process is affected by several factors, including temperature, pH of the solution, contact time, and the concentration of the solution. This study is focused on determining the optimum conditions of the pH of the solution and contact time of the solution of the dye. The solution of methylene blue dyes was adsorbed at pH 4, 5, 6, 7, and 8 with a contact time of 10, 15, 20 and 25 hours. The absorbance of the solutions before and after adsorption was measured using a visible spectrophotometer. In this study, biosorption results were obtained in optimum conditions at pH 6 with a contact time of 25 hours and percent adsorption of 67,53%.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0520090195 |
| Uncontrolled Keywords: | Aspergillus niger, biosorpsi, methylene blue, pH, waktu kontak |
| Subjects: | 500 Natural sciences and mathematics > 547 Organic chemistry > 547.2 Organic chemical reactions |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia |
| Depositing User: | ismanto |
| Date Deposited: | 13 Feb 2021 08:06 |
| Last Modified: | 22 Jul 2022 01:46 |
| URI: | http://repository.ub.ac.id/id/eprint/183013 |
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Text (DALAM MASA EMBARGO)
0520090195- Novia Rina Subyekti.pdf Restricted to Registered users only until 31 December 2023. Download (1MB) |
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