COLOR REDUCTION OF RICE STRAW FILTRATE FROM LEAD (PB) ADSORPTION BY L-A ARABINO FURANOSIDASE ENZYM

., Ratih and Kohar, Indrajati and ., Megawati and Puspaningsih, Ni Nyoman Tri and Janssen, Leon and Rega, Kestrilia (2015) COLOR REDUCTION OF RICE STRAW FILTRATE FROM LEAD (PB) ADSORPTION BY L-A ARABINO FURANOSIDASE ENZYM. Jurnal Purifikasi, 15 (2). pp. 114-121. ISSN 1411-3465

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Abstract

Rice straw could adsorb heavy metals from polluted water, but the drawback of rice straw is the color of the filtrate is brown, so that it cannot be used for everyday or household purposes. In the previous study, it was found that the variables which gives the highest respond in terms of % adsorption of Pb, were enzyme-50, amount of enzyme : straw= 2 : I (10 ml of enzyme for each 5 g of straw), I hour incubation time, amount of washing 5 x 5 ml, place of plant: low land, and size of straw: ground. As for the type of washing liquid, botb either demineralised water or Pb solution were the same. A problem rise from the brown color of straw filtrate as side product of heavy metal absorbtion. The condition caused the filtrate water no longer to use daily. An attempt of using enzyme has been tried to reduce the brown color and it did. Grind straw from low land and L-Oarabino-furanosidase are used is used in this study to reduce the brown color. However, the experiment/study is continued to optimize the reduced variables. To make the color elimination method feasible to use in daily life, especially in remote and poor villages/areas, a more !borough and in deptb study is conducted to optimize the usage of the enzyme. The adding of enzyme (I :4) contribute significantly toward the absorbance of the filtrate. And also the incubation time as well (up to 60 minutes), the longer the incubation time, the higher the absorbance of the filtrate which means that more brown colour is eliminated.

Item Type: Article
Uncontrolled Keywords: brown color of rice straw filtrate, L-Oarabino-furanosidase enzyme, adsorption, lead.
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Pharmacy > Department of Pharmacy
Depositing User: Eko Setiawan 194014
Date Deposited: 10 Jul 2017 08:15
Last Modified: 11 Jul 2017 01:50
URI: http://repository.ubaya.ac.id/id/eprint/30231

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