EarlySuryaAgustina (2010) Studi Pengaruh pH dan konsentrasi Larutan terhadap Adsorpsi Fosfat oleh Biomassa Tanaman Kiambang (Salvinia molesta). Sarjana thesis, Universitas Brawijaya.
Abstract
Telah dilakukan penelitian tentang kemampuan pengikatan biomassa kiambang ( salvinia molesta ) terhadap fosfat. Tujuan penelitian ini adalah untuk mengetahui pengaruh konsentrasi dan pH terhadap adsorpsi fosfat serta mengetahui isoterm adsorpsinya. Kiambang yang diperoleh dari persawahan dikeringkan dengan oven untuk mendapatkan biomassa kering dengan ukuran 120 mesh. Penentuan pengaruh pH larutan terhadap adsorpsi fosfat dilakukan pada variasi pH 6,5; 7; dan 7,5. Penentuan kapasitas adsorpsinya dilakukan pada variasi konsentrasi 1,6; 2; 4; dan 8 mg/L. Kapasitas adsorpsi optimum dihitung berdasarkan konsentrasi fosfat dalam larutan sebelum dan setelah proses adsorpsi. Konsentrasi awal dan akhir fosfat dalam larutan ditentukan dengan metode Timah (II) Klorida dengan menggunakan spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa biomassa kiambang mengandung protein yang mampu berperan mengadsorpsi fosfat. Naiknya pH menyebabkan adsorpsi juga meningkat. Kapasitas adsorpsi maksimum diperoleh pada konsentrasi 4 mg/L dengan banyaknya fosfat teradsorpsi sebesar 0,13±0,01 mg fosfat per gram biomassa kiambang dengan % adsorpsi sebesar 68,40%. Adsorpsi mengikuti isoterm Freundlich yaitu adsorpsi terjadi pada permukaan yang heterogen.
English Abstract
Research of adsorption capability of kiambang ( Salvinia molesta ) biomassat to phosphate in aqueous solution has been investigated. The aims of this research are to determinate influence of concentration and solution pH on phosphate adsorption and that adsorption isotherm. Kiambang which was grabbed from agriculture land was oven dried for producing dried biomassat with size of 120 mesh. The influence solution pH on phosphate adsorption was investigated at various pH 6.5; 7.0; 7.5. Adsorption capacities was infestigated at various concentration 1.6; 2; 4; and 8 mg/L. Calculation of adsorption capacities was based on the concentration of phosphate before and after adsorption process. Concentration of phosphate in aqueous solution before and after adsorption process were determinated by stanous chloride method using UV-Vis spectrophotometry. Results showed that kiambang biomassa consisted of protein to used phosphate adsorption. The increase in pH cause increase of phosphate adsorption. The optimum adsorption Capacities was determinated at concentration 4 mg/L with adsorption capasities were 0,13±0,01 mg phosphate per gram kiambang biomassat with % adsorption was 68,40%. The adsorption followed the Freundlich isotherm adsorption where adsorption was taken place on to heterogenous surface of adsorben.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2010/25/051000235 |
| Subjects: | 500 Natural sciences and mathematics > 540 Chemistry and allied sciences |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia |
| Depositing User: | Unnamed user with email repository.ub@ub.ac.id |
| Date Deposited: | 12 Feb 2010 10:31 |
| Last Modified: | 22 Oct 2021 02:29 |
| URI: | http://repository.ub.ac.id/id/eprint/152407 |
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