PENGOLAHAN ZAT WARNA METILEN BIRU DAN METIL JINGGA MENGGUNAKAN KOMPOSIT HIDROKSI LAPIS GANDA Ni-Al/MAGNETIT BIOCHAR DENGAN METODE ADSORPSI

ZAHARA, ZAQIYA ARTHA and Lesbani, Aldes and Mohadi, Risfidian (2023) PENGOLAHAN ZAT WARNA METILEN BIRU DAN METIL JINGGA MENGGUNAKAN KOMPOSIT HIDROKSI LAPIS GANDA Ni-Al/MAGNETIT BIOCHAR DENGAN METODE ADSORPSI. Masters thesis, Sriwijaya University.

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Abstract

The research was carried out the preparation of Ni-Al layered double hydroxide (LDH) with magnetite biochar (MBC) material to form a Ni-Al/magnetite biochar composite. XRD (X-Ray Diffraction) characterisation of Ni-Al/magnetite biochar interaction and the formation of bonds resulting in typical peaks of layered double hydroxide diffraction at 2θ = 11.38° and 61.20° and magnetite biochar at 2θ = 22° and 35°. FT-IR (Fourier Transform Infra Red) analysis formed LDH Ni-Al wave numbers at NO3- cm-1 vibrations and C-H and Fe-O groups on MBC at 1404 cm-1 and 552 cm-1 vibrational peaks, as well as a shift in the O-H group vibration peak at 3449 cm-1 wave numbers. BET (Brunauer Emmet Teller) analysis showed an increase in the Ni-Al/magnetite biochar composite of 127.310 m2/g, Ni-Al 5.845 m2/g, and magnetite biochar 61.843 m2/g. SEM-EDX (Scanning Electron Microscopy with Energy Dispersive X-Ray Spectroscopy) analysis had large, rough lumps, and layered layers, with the presence of Ni, Al, Fe, C elements, and a particle size of 83.0 μm for 8 composites. VSM (Vibrating Sample Magnetometer) analysis of MBC and composites resulted in magnetisation saturation values of 13.04; 8.35 (emu/g) and magnetic field values of 20.021; 20.216 (kOe). LDH, MBC and composite materials have optimum pH 7, 5, 6 on methylene blue (MB) adsorbate, while methyl orange (MJ) at optimum pH 6 and 4. The process of methylene blue and methyl orange dye selectivity shows that cationic dyes are more easily adsorbed than cationic dyes. The application of Ni-Al adsorbent, magnetite biochar and Ni-Al/magnetite biochar by adsorption method showed the kinetics on MB and MJ dyes tend to follow the Pseudo Second Order (PSO) equation with R2 values close to 1 and k2 values with MB adsorbate 0.0020; 0.0006; 0.0097 (g/mg.min), while the results of k2 values using MJ adsorbate 0.0024; 0.0008; 0.0030 (g/mg.min). The MB and MJ isotherms with all three adsorbents followed the Langmuir equation with Qmax values for MB dye 33.003; 37.736; 68.493 (mg/g), and MJ dye 32.573; 43.668; 45.455 (mg/g). The Ni-Al/magnetite biochar composite successfully demonstrated efficiency in the regeneration process up to five cycles. In the fifth adsorption cycle, the percentage absorption values of MB and MJ dyes of 58.494; 34.503 % were recorded.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Hidroksi Lapis Ganda, Magnetit Biochar, Komposit, Adsorpsi, Metilen Biru, Metil Jingga
Subjects:	Q Science > Q Science (General) > Q1-295 General Q Science > QD Chemistry > QD1-999 Chemistry Q Science > QD Chemistry > QD146-197 Inorganic chemistry
Divisions:	11-Postgraduates Study > 95129-Environment Management (S2)
Depositing User:	Zaqiya Artha Zahara
Date Deposited:	22 Jan 2024 07:01
Last Modified:	22 Jan 2024 07:01
URI:	http://repository.unsri.ac.id/id/eprint/139250

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