MODIFIKASI HIDROKSI LAPIS GANDA MENGGUNAKAN MAGNETIT BAHAN ALAM SEBAGAI ADSORBEN ZAT WARNA KATIONIK DAN ANIONIK

AHMAD, NUR and Lesbani, Aldes and Arsyad, Fitri Suryani and Royani, Idha (2025) MODIFIKASI HIDROKSI LAPIS GANDA MENGGUNAKAN MAGNETIT BAHAN ALAM SEBAGAI ADSORBEN ZAT WARNA KATIONIK DAN ANIONIK. Doctoral thesis, Sriwijaya University.

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Abstract

In recent years, modern economic and industrial activities that generate dye effluents are recognized as a major source of water pollution that has caused environmental damage. Adsorption is one of the appropriate methods of removing dyestuff from effluents due to its simple, effective, efficient, and low-cost process. Adsorption methods require suitable adsorbents. Efficient adsorbents can be synthesized easily, with low-cost, and high efficiency. This study used layered double hydroxide (LDH) material composited with magnetite and carbon materials of humic acid, activated charcoal, and lignin prepared using coprecipitation and hydrothermal methods. The results of XRD, FTIR, BET, SEM, and VSM characterization showed successful material modification. LDH and its composites were used as adsorbents for cationic and anionic dyes (malachite green, methylene blue, congo red, direct yellow, and procion red). The adsorbent that showed the best and consistent performance for both cationic and anionic dyes was MgAl-MCA. This is because the adsorbent has more functional groups and pores than charcoal activated. Regeneration materials showed good performance for the regeneration of NiAl-MAH and ZnAl-MAH with 95.92% and 97.29% efficiency respectively after 5 regeneration cycles which showed good stability as they have been composited with humic acid to strengthen the material structure. In addition, the magnetic quality of the material makes the adsorption process more efficient and reduces the risk of the material surface being damaged.

Item Type:	Thesis (Doctoral)
Uncontrolled Keywords:	LDH, magnetit, asam humat, charcoal activated, lignin, zat warna
Subjects:	Q Science > QD Chemistry > QD146-197 Inorganic chemistry
Divisions:	08-Faculty of Mathematics and Natural Science > 44001-Mathematics and Natural Science (S3)
Depositing User:	Nur Ahmad
Date Deposited:	26 Jan 2025 07:30
Last Modified:	26 Jan 2025 07:30
URI:	http://repository.unsri.ac.id/id/eprint/166957

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