Penurunan Kadar Kromium (VI) dalam Larutan menggunakan Biomassa Ketela Pohon (Martihot Esculenta , Crantz) Teraktivasi Asam Tioglikolat 0,1 N

Widodo, Kukuh Imantyoko Kurniawan (2008) Penurunan Kadar Kromium (VI) dalam Larutan menggunakan Biomassa Ketela Pohon (Martihot Esculenta , Crantz) Teraktivasi Asam Tioglikolat 0,1 N. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Telah dilakukan penelitian penurunan kadar kromium (VI) di dalam larutan menggunakan biomassa ketela pohon (Manihot esculenta, Crantz.) teraktivasi asam tioglikolat 0,1 N. Penurunan kadar kromium (VI) dalam larutan diamati pada berbagai variasi waktu aktivasi (15,30,45,60 dan 75 menit), pH (3,5,7 dan 9) dan waktu kontak (15, 30, 45 dan 60 menit). Waktu optimum aktivasi dengan asam tioglikolat 0,1 N adalah pada menit ke 45 dengan % penurunan kadar kromium sebesar 58,241 %. Kondisi penyerapan optimum logam kromium di dalam larutan oleh biomassa ketela pohon teraktivasi teijadi pada pH 7 dengan waktu kontak 45 menit, dengan % penurunan kadar kromium oleh biomassa ketela pohon sebesar 76,885 %. Sedangkan untuk optimasi konsentrasi penyerapan kromium di dalam larutan oleh biomassa ketela pohon yang dilakukan pada kondisi optimum memberikan hasil daya serap rata - rata logam kromium sebesar 7,962 mg/g.
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The ability of cassava biomass activated by thioglycolic acid 0,1 N to decrease amount of chromium (VI) in aqueous solution was researched. Decreasing amount of chromium (VI) in aqueous solution has been observed in various activation time (15,30,45,60 and 75 minutes), pH (3,5,7 and 9) and contact time (15,30,45 and 60 minutes). Optimum adsorption condition of chromium in aqueous solution using activated cassava biomass was found with the 45 minutes activation time. The decreasing amount of chromium is 58,241 %. Optimum adsorption condition of chromium in aqueous solution using cassava biomass was found in pH 7 with the 45 minutes contact time. The decreasing amount of chromium in optimum condition is 76,885 %. Meanwhile the adsorption concentrate optimation of chromium in optimum condition give an average sorption result 7,962 mg/g

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Biomassa ketela pohon (Manihot esculenta,Crantz), asam tioglikolat, kromium (VI), cassava biomass (Manihot esculenta,Crantz),thioglycolic acid, chromium (VI).
Subjects:	Q Science > QD Chemistry > QD481 Chemical structure.
Divisions:	Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	magang .
Date Deposited:	08 Oct 2026 03:19
Last Modified:	08 Oct 2026 03:19
URI:	http://repository.its.ac.id/id/eprint/145427

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