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Biosorption capacity of Rumex Crispus Linn ( curly dock) on lead (Pb2+)/ Karen Yvonne Bihag and Arriane Margarette S. Sosmeña .--

By: Contributor(s): Material type: TextTextPublication details: Manila: Technological University of the Philippines, 2019.Description: iii, 81pages: 29cm. +1 CD ROM (3/4in.)Content type:
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  • BTH RB 37 B54 2019
Dissertation note: College of Science .-- Bachelor of Applied Science major in Laboratory Technology: Technological University of the Philippines, 2019. Summary: ABSTRACT The study aimed to remove heavy metal Lead (Pb2+ ) in aqueous solution using Rumex crispus linn. (Curly dock) leaves. The parameters used in this study were effect of pH, effect of contact time and effect of sample dosage. The phytochemical constituents, functional group and the surface morphology of the Rumex crispus linn.(Curly dock) were also identified. The plant contains alkaloids, flavonoids, tannins, and saponins while the functional groups present are hydroxyl alcohol, phenolic compounds, saturated aliphatic compounds and an amide group which are responsible for the metal uptake of plant. The biosorption capacity was measured in terms of percent Pb2+ adsorbed from 100mL of 50 ppm standard stock solution at different pH (4, 5, 6, 7, 8 and 9), with different contact time (30minutes, 1hour and 2 hours) and different sample dosage (3g, 5g, 7g and 9g). Atomic Absorption Spectrophotometer (AAS) was used to measure the adsorbance of Pb2+ . Results showed that the optimum pH was pH 5 with 92.24% of Pb2+ adsorbance, an optimum contact time of 1 hour with 95.96% of Pb2+ adsorbance and 7g of sample dosage with 93.26% of Pb2+ adsorbance. The adsorption of the study best follows Langmuir isotherm. Scanning Electron Microscopy (SEM) on the surface morphology of the Rumex crispus linn.(Curly dock) leaves reveals pores which are similar to the activated carbon, an ideal adsorbent and responsible for the adsorption of Pb2+ ions. Keywords: Biosorption, Rumex crispus linn., Phytochemical, morphology, Atomic Absorption Spectrophotometer , Scanning Electron Microscopy
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Item type Current library Shelving location Call number Copy number Status Notes Date due Barcode
Bachelor's Thesis COS Bachelor's Thesis COS TUP Manila Library Thesis Section-2nd floor BTH RB 37 B54 2019 (Browse shelf(Opens below)) c.1. Not for loan For library use only BTH0003373

Thesis (undergraduate)

College of Science .-- Bachelor of Applied Science major in Laboratory Technology: Technological University of the Philippines, 2019.

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ABSTRACT
The study aimed to remove heavy metal Lead (Pb2+
) in aqueous solution using
Rumex crispus linn. (Curly dock) leaves. The parameters used in this study were effect of
pH, effect of contact time and effect of sample dosage. The phytochemical constituents,
functional group and the surface morphology of the Rumex crispus linn.(Curly dock)
were also identified. The plant contains alkaloids, flavonoids, tannins, and saponins while
the functional groups present are hydroxyl alcohol, phenolic compounds, saturated
aliphatic compounds and an amide group which are responsible for the metal uptake of
plant. The biosorption capacity was measured in terms of percent Pb2+
adsorbed from
100mL of 50 ppm standard stock solution at different pH (4, 5, 6, 7, 8 and 9), with
different contact time (30minutes, 1hour and 2 hours) and different sample dosage (3g,
5g, 7g and 9g). Atomic Absorption Spectrophotometer (AAS) was used to measure the
adsorbance of Pb2+
. Results showed that the optimum pH was pH 5 with 92.24% of Pb2+
adsorbance, an optimum contact time of 1 hour with 95.96% of Pb2+
adsorbance and 7g
of sample dosage with 93.26% of Pb2+
adsorbance. The adsorption of the study best
follows Langmuir isotherm. Scanning Electron Microscopy (SEM) on the surface
morphology of the Rumex crispus linn.(Curly dock) leaves reveals pores which are
similar to the activated carbon, an ideal adsorbent and responsible for the adsorption of
Pb2+ ions.
Keywords: Biosorption, Rumex crispus linn., Phytochemical, morphology, Atomic
Absorption Spectrophotometer , Scanning Electron Microscopy

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