Skripsi

PREPARASI ADSORBEN KOMPOSIT HIDROKSI LAPIS GANDA-Hylocereus costaricensis PEEL UNTUK ADSORPSI CEFTRIAXONE

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The increasing use of antibiotics particularly ceftriaxone has raised environmental concerns due to their residues contaminating aquatic systems. This study aims to develop layered double hydroxide materials MgAl, MgCr, and MgFe synthesized through the coprecipitation method and modified with red dragon fruit peel extract (Hylocereus costaricensis). This modification was carried out to improve adsorption capacity and regeneration ability in the removal of ceftriaxone from aquatic environments. Characterization of the materials showed successful modification through XRD analysis which indicated a decrease in peak intensity and the appearance of an additional peak at 17°, FTIR spectra identified new functional groups from the extract such as C–H, C=C, and carboxylic acid, while BET analysis showed an increase in surface area of the composites compared to pristine LDH. Adsorption test results showed that the removal of ceftriaxone occurred optimally at a pH range of 5–7. Kinetic studies showed that adsorption on MgCr-LDH, MgCr-HC, and MgFe-HC followed the PFO model, while MgAl�LDH, MgAl-HC, and MgFe-HC followed the PSO model. Thermodynamic analysis revealed that the adsorption process was endothermic and spontaneous on MgAl, MgCr-HC, and MgFe-HC, but non-spontaneous on MgCr, MgFe, and MgAl-HC. The maximum adsorption capacities were obtained at 322.58 mg/g for MgAl-HC, 454.55 mg/g for MgCr-HC, and 500.00 mg/g for MgFe-HC. Regeneration tests proved that LDH-HC composites had better and more stable adsorption performance compared to pristine LDH, with regeneration ability maintained up to four cycles. These results indicate that LDH composites with red dragon fruit peel extract are promising and sustainable adsorbents to overcome antibiotic contamination in aquatic environments.

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Detail Information

Series Title

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Call Number

T1909942026

Publisher

Indralaya : Prodi Magister Ilmu Material, Fakultas Ekonomi Universitas Sriwijaya., 2026

Collation

xvii, 87 hlm.; ilus.; 29 cm

Language

Indonesia

ISBN/ISSN

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Classification

541.335 07

Content Type

Text

Media Type

unmediated

Carrier Type

-

Edition

-

Subject(s)

Prodi Magister Ilmu Material
Adsorben Komposit

Specific Detail Info

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Statement of Responsibility

KA

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