Kajian Eliminasi Sianida (HCN) Dalam Kacang Arbila (Phaseolus lunatus L) Menggunakan Larutan Kapur Sirih (Ca(OH)2)

HATI, Florida (2019) Kajian Eliminasi Sianida (HCN) Dalam Kacang Arbila (Phaseolus lunatus L) Menggunakan Larutan Kapur Sirih (Ca(OH)2). Diploma thesis, Unika Widya Mandira.

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Abstract

This research has been carried out with the aim to eliminate the content of cyanide in arbila beans ( Phaseolus lunatus L), because the beans contain high protein, carbohydrate, fat, and faber, but they contain a toxic compound namely sianida. Elimination test carried out using a solution of lime betel (Ca(OH)2). The method used is immersion, destilation, dan titration. The sample of arbila beans tested was divided into 2 parts (A and B), each weighing 250 grams. Sample A was immersed in water for 24 hours in a tightly closed container and the filtrate was distilled into the NaOH 2,5% solution, which was then added to the 5 mL KI 5% and the 8 mL NH4OH 5% solution. The solution is then titrated with 0,02N AgNO3 solution. Sample B soaked ith mineral water for 24 ghours, and the filtrate is divided into 3 parts(B1, B2 dan B3), each 50 mL of the filtrate. Filtrate sampel B1 was added to a solution of betel lime 10%, sampel B2 was a solution pof betel lime 20%, sample B3 was a solution of betel lime 30%. Each solution was distilled into the NaOH 2,5 %, solution and then each solution was titrated with AgNO3 0,02 N. the results of the analysis of cyanide levels in samples A, B1, B2 and B3, were 39ppm, 6,24 ppm, 3,12 ppm, and 2,29 ppm. It can be concluded that the betel lime solution can bind cyanide from arbila beans to form Ca(CN)2 salt dissolved in immersion water. This is indicated by low levels of distilled free cyanide.

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