Reducing Lead and Brown Color from Heavy Metal’s Elimination’s Filtrate

Kohar, Indrajati and ., Ratih and Lynawati, Cynthia and Hadiyat, Mochammad Arbi and Puspaningsih, Ni Nyoman Tri and Janssen, Leon and Rega, Kestrilia (2016) Reducing Lead and Brown Color from Heavy Metal’s Elimination’s Filtrate. Proceedings of The 3rd Asia Future Conference Environment & Coexistence. pp. 74-75. ISSN 2432-0528

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Heavy metals contamination is a major concern in the world. Many studies showed that rice straw as agricultural waste could adsorb heavy metals from polluted water, and it is cheap. The drawback is that it produced brown water, which is unacceptable for household purposes. Enzyme L--arabino-furanosidase reduced the brown color considerably. In the previous study, enzyme-50: straw = 2 : 1, 1 hour incubation time, amount of washing: 5 x 5 ml, place of harvesting: low land, and ground straw showed the highest responds in terms of % Pb adsorbed. Either demineralised water or Pb solution could be used to wash the straw. To invest the feasibility for use in daily life, especially in remote and poor villages, a more thorough and in depth study was conducted to optimize the usage of the enzyme. The addition of enzyme : straw =4:1, and 1 hour incubation time contributed significantly toward the reduction of the brown color. However, the increase of enzyme and incubation time resulted in a decrease of the elimination of lead. This might be due to the elimination of lignin from the straw, whereas lignin also contributes to the elimination of the heavy metal. Maximum lead reduction (0.63 mg Pb(II)/g straw) was obtained at 0 gram enzyme and 22.3 minutes incubation time

Item Type: Article
Uncontrolled Keywords: brown color of rice straw filtrate, heavy metals, L--arabino-furanosidase enzyme,adsorption
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Pharmacy > Department of Pharmacy
Depositing User: Eko Setiawan 194014
Date Deposited: 11 Oct 2016 06:19
Last Modified: 24 Mar 2021 15:28

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