Desiccated Coconut ( Cocos Nucifera) waste: an adsorbent for Rhodamine B Dye in aqueous solution/ Joanna Marie A. Geoman, Judy Lyn C. Sabordo, and Julia S. Ugerio .--

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Geoman, Joanna Marie A [author ]

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TextPublication details: Manila: Technological University of the Philippines, 2024.Description: viii, 107pages: 29cm. +1 CD-ROM (4 3/4in.)Content type:

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BTH RB 37 G46 2024

Dissertation note: College of Science .-- Bachelor of Applied Science in Laboratory Technology: Technological University of the Philippines, 2024. Summary: Synthetic dyes, such as the Rhodamine B (RhB) dye found in wastewater, can be toxic to humans and aquatic life; treating it can help mitigate its hazardous effects. This study assessed the efficacy of desiccated coconut waste (DCW) powder, an agricultural waste product derived from matured coconut, as an adsorbent precursor for removing synthetic dyes using a batch adsorption process. Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and an energy dispersive X-ray spectrometer (EDX) were used to characterize the adsorbent before and after adsorption. Various parameters were optimized, and the adsorption kinetic and isotherm models were evaluated. The results showed that the optimal conditions for RhB adsorption were a dosage of 2.0 grams, an initial dye concentration of 40 mg/L, and an equilibrium time of 20 minutes. RhB had an equilibrium removal rate of 82.16% with a qe of 0.341 mg/g. The adsorption of RhB was found to follow a pseudo-second-order kinetic model at a rate of 2.57 x 10-2 g/mg·min. Based on the calculations, the Freundlich model describes the best adsorptive removal of RhB. The model suggests that the adsorption was multilayer and that the DCW has heterogeneous adsorption sites with an equilibrium constant of 0.0153 L/mg. As a result, this study proved that using DCW as an adsorbent for wastewater treatment is practical, cost-effective, and efficient.

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Item type	Current library	Shelving location	Call number	Copy number	Status	Notes	Date due	Barcode
Bachelor's Thesis COS	TUP Manila Library	Thesis Section-2nd floor	BTH RB 37 G46 2024 (Browse shelf(Opens below))	c.1.	Not for loan	For library use only		BTH0005006

Thesis (undergraduate)

College of Science .-- Bachelor of Applied Science in Laboratory Technology: Technological University of the Philippines, 2024.

Includes bibliography.

Synthetic dyes, such as the Rhodamine B (RhB) dye found in wastewater, can be toxic to
humans and aquatic life; treating it can help mitigate its hazardous effects. This study assessed the
efficacy of desiccated coconut waste (DCW) powder, an agricultural waste product derived from
matured coconut, as an adsorbent precursor for removing synthetic dyes using a batch adsorption
process. Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM),
and an energy dispersive X-ray spectrometer (EDX) were used to characterize the adsorbent before
and after adsorption. Various parameters were optimized, and the adsorption kinetic and isotherm
models were evaluated. The results showed that the optimal conditions for RhB adsorption were a
dosage of 2.0 grams, an initial dye concentration of 40 mg/L, and an equilibrium time of 20
minutes. RhB had an equilibrium removal rate of 82.16% with a qe of 0.341 mg/g. The adsorption
of RhB was found to follow a pseudo-second-order kinetic model at a rate of 2.57 x 10-2

g/mg·min.
Based on the calculations, the Freundlich model describes the best adsorptive removal of RhB.
The model suggests that the adsorption was multilayer and that the DCW has heterogeneous
adsorption sites with an equilibrium constant of 0.0153 L/mg. As a result, this study proved that
using DCW as an adsorbent for wastewater treatment is practical, cost-effective, and efficient.

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