0817011017 , ALBERT FERDINAND PARTOGI (2012) MODIFIKASI BIOMASSA Nannochloropsis sp DENGAN PELAPISAN SILIKA-MAGNETIT SEBAGAI ADSORBEN ION Zn(II) DAN Ni(II). Digital Library.
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Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
Abstrak Pada penelitian ini telah dilakukan proses adsorpsi ion Zn(II) dan Ni(II) terhadap adsorben biomassa alga Nannochloropsis sp, Hibrida alga silika (HAS), dan HASmagnetit. Identifikasi gugus fungsi biomassa alga Nannochloropsis sp, HAS, dan HAS-magnetit dilakukan dengan menggunakan spektrofotometer inframerah (IR) dan diketahui dari ketiga adsorben tersebut terdapat adanya pita serapan pada daerah bilangan gelombang 3500-3400 cm-1 yang berasal dari gugus hidroksil (-OH), 3000- 2900 cm-1 yang berasal dari serapan vibrasi ulur C-H dari (-CH2) alifatik, dan 1670- 1650 cm-1 dari gugus karbonil. Data kinetika adsorpsi ion Zn(II) dan Ni(II) pada biomassa alga Nannochloropsis sp, HAS, dan HAS-magnetit cenderung mengikuti model kinetika pseudo orde dua dengan koefesien korelasi (R2) masing-masing sebesar 0,956, 0,861 , dan 0,964. Isoterm adsorpsi ion Zn(II) dan Ni(II) pada biomassa alga Nannochloropsis sp dan HAS cenderung mengikuti model isoterm Langmuir sedangkan pada HAS-magnetit cenderung mengikuti model isoterm Freundlich. Abstract This research has been conducted on the adsorption process of Zn (II) and Ni (II) ion to Nannochloropsis sp algae biomass adsorbent, silica algae hybrid (HAS), and HAS-magnetite. Identification of the functional groups of Nannochloropsis sp algae biomass, HAS, and HAS-magnetite was performed by using a spectrophotometer of infrared (IR) and it is known from the all adsorbents contained the absorption band in the wavenumber region 3500-3400 cm-1 originating from the hydroxyl group (-OH ), 3000-2900 cm-1 are derived from the uptake of CH stretching vibrations of (-CH2) aliphatic, and 1670-1650 cm-1 are carbonyl group. Adsorption kinetics data of Zn (II) and Ni (II) ion in Nannochloropsis sp algae biomass, HAS, and HAS-magnetite tend to follow the pseudo second order kinetics with a correlation coefficient (R2) of 0.956, 0.861, and 0.964, respectively. Adsorption isotherms of Zn (II) and Ni (II) ion on Nannochloropsis sp algae biomass and HAS tend to follow the Langmuir isotherm models, while the HAS-magnetite tend to follow the model of Freundlich isotherms.
| Jenis Karya Akhir: | Artikel |
|---|---|
| Subyek: | |
| Program Studi: | FAKULTAS MIPA > Prodi Biologi |
| Pengguna Deposit: | IC-STAR . 2015 |
| Date Deposited: | 22 Oct 2015 08:56 |
| Terakhir diubah: | 22 Oct 2015 08:56 |
| URI: | http://digilib.unila.ac.id/id/eprint/13560 |
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