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MODIFIKASI BIOCHAR DARI SEKAM PADI DENGAN MnFe2O4/Ag3PO4 UNTUK ADSORPSI LOGAM BESI (Fe) PADA AIR SUMUR DAN UJI ANTIBAKTERI

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Iron (Fe) metal is often found in well water and at high concentrations can degrade water quality. This study synthesized a Biochar/MnFe₂O₄/Ag₃PO₄ composite, evaluated its characteristics, Fe adsorption capacity, and applied it to well water and antibacterial tests. Biochar was synthesized through pyrolysis of rice husk, MnFe₂O₄ was modified through coprecipitation, and followed by precipitation of Ag₃PO₄. Characterization showed a surface area of 58.489 m²/g and a saturation magnetization (Ms) of 4.5 emu/g. XRD confirmed the formation of MnFe₂O₄ and Ag₃PO₄ crystalline phases. FTIR identified O–H, C=O, C–O, and Fe–O functional groups. SEM-EDS showed porous morphology and elemental composition of C, Mn, Fe, Ag, O, and P. Fe adsorption efficiency reached 99.96% at pH 5, concentration of 125 mg/L, and contact time of 60 minutes, and 67.83% in well water application. The maximum adsorption capacity (Qm) of 5.46 mg/g followed the Langmuir isotherm (R² = 0.9911). The adsorption kinetics followed a pseudo second order model with Qe of 31.2365 mg/g and R² = 1, indicating a chemisorption mechanism. Antibacterial test showed inhibition zone against Staphylococcus aureus of 9.6 mm and Escherichia coli of 8.6 mm at a concentration of 5000 mg/L. This composite has the potential as a magnetic adsorbent and antibacterial agent for the treatment of well water contaminated with Fe metal. Keywords: Biochar, MnFe₂O₄, Ag₃PO₄, adsorption, Fe, antibacterial

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Detail Information

Series Title

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Call Number

T1962372026

Publisher

Indralaya : Prodi Magister Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya., 2026

Collation

xvii, 210 hlm.; ilus.; 29 cm

Language

English

ISBN/ISSN

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Classification

628.160 7

Content Type

Text

Media Type

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Carrier Type

-

Edition

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Subject(s)

Prodi Magister Kimia
Biochar Sekam Padi

Specific Detail Info

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Statement of Responsibility

TUTI

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