Agung, Desak Putu (2007) Studi Kemampuan Adsorpsi Biomassa Daun Rumput Gajah (pennisetum purpureum) Terhadap Cr(VI). Sarjana thesis, Universitas Brawijaya.
Abstract
Telah dilakukan penelitian tentang adsorpsi Cr(VI) dengan menggunakan biomassa daun rumput gajah. Tujuan penelitian ini adalah untuk menentukan kondisi optimum adsorpsi dan kapasitas adsorpsi biomassa daun rumput gajah terhadap Cr(VI). Penelitian dilakukan pada variasi lama pengocokan 15, 30, 60, dan 120 menit, variasi pH 1, 2, 3, 4, 5, dan 6, variasi konsentrasi Cr(VI) 25, 50, 75, 100, 125, dan 150 ppm. Konsentrasi Cr(VI) sisa adsorpsi ditentukan secara spektrofotometri dengan metode difenilkarbazida. Persen adsorpsi ditentukan berdasarkan konsentrasi Cr(VI) sebelum dan sesudah adsorpsi. Hasil penelitian menunjukkan bahwa lama pengocokan, pH dan konsentrasi Cr(VI) berdasarkan analisa statistik memberikan pengaruh nyata terhadap adsorpsi Cr(VI) (P < 0,05). Kondisi optimum adsorpsi terjadi pada lama pengocokan 60 menit dan pH 2 dengan kapasitas adsorpsi Cr(VI) sebesar 15,97 ± 0,27 mg/g.
English Abstract
Adsorption of Cr(VI) by elephant grass leaves biomass was studied. The purpose of this research is to determine the adsorption optimum condition and the adsorption capacity of elephant grass leaves biomass toward Cr(VI). The experiments were conducted at, various shaking time period of 15, 30, 60, and 120 minutes, and various pH of 1, 2, 3, 4, 5, and 6, various Cr(VI) concentration of 25, 50, 75, 100, 125, and 150 ppm. The remaining of Cr(VI) in the solution was measured spectrophotometrically with diphenylcarbazide-method of the research. Adsorption percentage was determined based on the Cr(VI) concentration before and after the adsorption. The results showed that shaking time period, pH and Cr(VI) concentration influenced the adsorption of Cr(VI) (P < 0,05). Optimum conditions of the adsorption were obtained at shaking time periode of 60 minutes, pH of 2 with adsorption capacity of 15,97 ± 0,27 mg/g.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2007/74/050700842 |
| Subjects: | 500 Natural sciences and mathematics > 510 Mathematics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Matematika |
| Depositing User: | Unnamed user with email repository.ub@ub.ac.id |
| Date Deposited: | 03 Jun 2009 13:33 |
| Last Modified: | 09 Mar 2022 01:56 |
| URI: | http://repository.ub.ac.id/id/eprint/151746 |
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