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STUDI SERAPAN ION NIKEL OLEH BIOMASSA FITOPLANKTON (Tetraselmis chuii) ., Bahrizal
Jurnal Entropi Vol 5, No 2, 2009
Publisher : Jurnal Entropi

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Abstract

In the present work, the process of nickel-ion adsorption by T. chuii biomass have been investigated. This investigation intend to determinate capacity of adsorption the biomass for nickel ion in water. A weight of 100 mg biomass was put ionto 5 ppm of the metal-ion solution whose pH varied from 5.0 to 7.5. Then, these solutions were stirred for 30 minutes. After filtering, the metal-ion concentration in the filtrate was determined by atomic absorption spectrometry. The amount of ion adsorbed by the biomass was taken as the difference between the initial and final concentration of the solution. Further, the same method was carried out to the varied concentration. The result showed, the optimum pH for metal-ion adsorption by the biomass is 7.0, having adsorption value 0,918 mg/g biomass. Capacity of nickel-ion adsorption was obtained by varied concentration, yielded value of 2,370 mg/g.
STUDI PENYERAPAN ION KROM(III) OLEH BIOMASSA AMPAS TEBU (Saccharum Spontaneum ) DALAM AIR ., Bahrizal
Sainstek Vol5, No 1, 2010
Publisher : Jurnal Sainstek

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In the present work, the process of chrom(III)-ion adsorption by S. spontaneum biomass have been investigated. This investigation intend to determinate capacity of adsorption the biomass for chrom(III) ion in water. A weight of 1 g biomass was put ionto 10 ppm of the metal-ion solution whose pH varied from 4.0 to 6.0. Then, these solutions were stirred for 120 minutes. After filtering, the metalion concentration in the filtrate was determined by atomic absorption spectrometry. The amount of ion adsorbed by the biomass was taken as the difference between the initial and final concentration of the solution. Further, the same method was carried out to the varied concentration. The result showed, the optimum pH for metal-ion adsorption by the biomass is 5.5, having adsorption value 0.128 mg/g. Capacity of khrom(III)-ion adsorption was obtained by varied concentration, yielded value of 0.318 mg/g. Key word: S. spontaneum, biomass, adsorption, spectrometry
STUDI SERAPAN ION TIMBAL(II) OLEH BIOMASSA GANGGANG (HYDRILLA VERTICILLATA) DALAM AIR ., Bahrizal
Sainstek Vol4, No 3, 2009
Publisher : Sainstek

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Abstract

In the present work, the process of lead-ion adsorption by H. verticillata biomass have been investigated. This investigation intend to determinate capacity of adsorption the biomass for lead ion in water. A weight of 500 mg biomass was put ionto 300 ppm of the metal-ion solution whose pH varied from 4.0 to 6.0. Then, these solutions were stirred for 20 minutes. After filtering, the metal-ion concentration in the filtrate was determined by atomic absorption spectrometry. The amount of ion adsorbed by the biomass was taken as the difference between the initial and final concentration of the solution. Further, the same method was carried out to the varied concentration. The result showed, the optimum pH for metal-ion adsorption by the biomass is 5.0, having adsorption value 14,867 mg/g. Capacity of lead-ion adsorption was obtained by varied concentration, yielded value of 24,490 mg/g. Key word: H. verticillata, biomass, adsorption, spectrometry
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