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Equilibrium and kinetic studies: removal of heavy metal (Cu2+, Cr3+) from Aqueous solution using modified corncobs / Israel B. Bactol. 6

By: Israel Israel B. Bactol. 4 0 16, [, ] | [, ] |

Contributor(s): 5 6 [] |

Language: Unknown language code Summary language: Unknown language code Original language: Unknown language code Series: ; February 2006.46Edition: Description: 28 cm. 35 ppContent type: text Media type: unmediated Carrier type: volumeISBN: ISSN: 2Other title: 6 []Uniform titles: | | Related works: 1 40 6 []Subject(s): -- 2 -- 0 -- -- | -- 2 -- 0 -- 6 -- | 2 0 -- | -- -- 20 -- | | -- -- -- -- 20 -- | -- -- -- 20 -- --Genre/Form: -- 2 -- Additional physical formats: DDC classification: | LOC classification: | | 2Other classification:

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Action note: In: Summary: ABSTRACT: Removal of metal ions (Cu2+, Cr3+) from aqueous solution was studied using absorbent prepared from corncobs. Modification process included base treatment, washing with water and phosphorylation. FTIR was used for functional group identification and AAS for determination of equilibrium concentration of metals. Experiment was conducted over varying concentration range (1mg/L to 60mg/L) at room temperature. The equilibrium data were fitted into two adsorption isotherm equations: Langmuir and Freundlich. Based on their corresponding correlation values, result showed that the adsorption of both modified and non-modified corncobs was ideal by following the Langmuir Equation. Kinetic orders of the process were also determined to predict the adsorption behaviour of the system. Initial concentrations, equilibrium concentration and temperature served as functions of the kinetic order. It was shown that all adsorption process followed pseudo-second order kinetics. The effectiveness of modified corncobs in removing metals was reported by determining its maximum adsorption capacity. Comparison between modified and non-modified adsorbents was done by using two-way ANOVA and t-test. Other editions:

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Item type	Current location	Home library	Collection	Call number	Status	Date due	Barcode	Item holds
Book	PLM	PLM Filipiniana Section	Filipiniana-Thesis	T QD1.B33.2006 (Browse shelf)	Available		FT6422

Total holds: 0

Undergraduate Thesis: (Bachelor of Science in Chemistry -) Pamantasan ng Lungsod ng Maynila, 2006. 56

ABSTRACT: Removal of metal ions (Cu2+, Cr3+) from aqueous solution was studied using absorbent prepared from corncobs. Modification process included base treatment, washing with water and phosphorylation. FTIR was used for functional group identification and AAS for determination of equilibrium concentration of metals. Experiment was conducted over varying concentration range (1mg/L to 60mg/L) at room temperature. The equilibrium data were fitted into two adsorption isotherm equations: Langmuir and Freundlich. Based on their corresponding correlation values, result showed that the adsorption of both modified and non-modified corncobs was ideal by following the Langmuir Equation. Kinetic orders of the process were also determined to predict the adsorption behaviour of the system. Initial concentrations, equilibrium concentration and temperature served as functions of the kinetic order. It was shown that all adsorption process followed pseudo-second order kinetics. The effectiveness of modified corncobs in removing metals was reported by determining its maximum adsorption capacity. Comparison between modified and non-modified adsorbents was done by using two-way ANOVA and t-test.

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