Mahardini, Putri (2017) Pengaruh Jumlah Inokulum, pH, dan Konsentrasi Awal Cr(VI) terhadap Biosorpsi Cr(VI) oleh Trichorderma viride. Sarjana thesis, Universitas Brawijaya.
Abstract
Kromium dalam keadaan heksavelen maupun trivalent merupakan salah satu polutan dalam air. Namun, Cr(VI) lebih toksik dan lebih mutagenik dibandingkan Cr(III). Penelitian ini bertujuan untuk mengetahui kemampuan Trichoderma viride dalam proses biosorpsi Cr(VI). Variabel yang diteliti adalah pengaruh jumlah inokulum Trichoderma viride, pH, dan konsentrasi awal Cr(VI). Jumlah inokulum yang digunakan dalam penelitian ini adalah 2 mL, 4 mL, 6 mL, 8 mL, dan 10 mL. Rentang pH yang digunakan dalan penelitian ini yaitu 4 – 7,5. Konsentrasi awal Cr(VI) yang digunakan adalah 10 mg/L, 20 mg/L, 40 mg/L, 60 mg/L, 80 mg/L, dan 100 mg/L. Metode pengukuran Cr(VI) adalah dengan metode spektrofotometri dengan agen pewarna difenilkarbazida (DPC). Jumlah biosorpsi Cr(VI) dengan pengaruh pH 4; 4,5; 5; 5,5; 6; 6,5; 7; 7,5 adalah 98,16; 98,37; 97,93; 98,32; 99,13; 99,09; dan 98,22%. Jumlah biosorpsi Cr(VI) tertinggi berada pada pH 6, yaitu sebesar 99.13%. Jumlah biosorpsi Cr(VI) meningkat seiring peningkatan jumlah inokulum. Jumlah biosorpsi Cr(VI) dengan jumlah inokulum 2, 4, 6, 8, dan 10 mL dengan konsentrasi awal Cr(VI) 100 mg/L yaitu sebesar 65,00; 69,55; 72,20; 73,06; 74,69%. Sementara itu, jumlah biosorpsi Cr(VI) menurun seiring meningkatnya konsentrasi awal Cr(VI). Jumlah biosorpsi Cr(VI) dengan konsentrasi awal 10, 20, 40, 60, 80, dan 100 mg/L yaitu sebesar 90,41; 95,59; 96,86; 86,80; 85,54; dan 69,61%.
English Abstract
Chromium which exists in hexavalent and trivalent, is a pollutant in aquatic systems. However, Cr(VI) is more toxic and more mutagenic than Cr(III). The aim of this experiments is to determine the potential of Trichoderma viride in the biosorption of Cr(VI) in the water samples. The variables studied were the number of inoculums, pH, and initial concentrations of Cr(VI). The amount of inoculums used were 2 mL, 4 mL, 6 mL, 8 mL, and 10 mL. the variations of pH used were 4-7.5. The variation of initial concentrations of Cr(VI) used were 10, 20, 40, 60, 80, and 100 mg/L. The determination of Cr(VI) was conducted using spectrophotometry method, which used diphenylcarbazide as coloring agent. The biosorption of Cr(VI) Trichoderma viride with various pHs of 4; 4.5; 5; 5.5; 6; 6.5; 7; 7.5 equals to 98.16; 98.37; 97.93; 98.32; 99.13; 99.09; 98.22%, respectively. The highest amount of reduction of Cr(VI) occurred on pH 6, that equals to 99.13%. The biosorption of Cr(VI) using inoculums of 2, 4, 6, 8, and 10 mL were equals to 65.00; 69.55; 72.20; 73.06; 74.69%, respectively. The trends observed were the more the amount of inoculum used, the greater the amount of Cr(VI)-sorption; the more the concentrations of Cr(VI) used, the smaller the amounts of Cr(VI)-sorption. The amount of biosorption of Cr(VI) using initial concentrations of Cr(VI) 10, 20, 40, 60, 80, and 100mg/L were equals to 90.41; 95.59; 96.86; 86.80; 85.54; and 69.61%, respectively.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FMIPA/2017/478/051709834 |
| Uncontrolled Keywords: | biosorpsi, Cr(VI), difenilkarbazida, inokulum, Trichoderma viride |
| Subjects: | 500 Natural sciences and mathematics > 540 Chemistry and allied sciences |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia |
| Depositing User: | Nur Cholis |
| Date Deposited: | 02 Nov 2017 01:21 |
| Last Modified: | 17 Nov 2021 02:57 |
| URI: | http://repository.ub.ac.id/id/eprint/4710 |
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