CD Skripsi

Adsorpsi Logam Kadmium (Cd) Dalam Larutan Menggunakan Zeolit Berbahan Dasar Pofa (Palm Oil Fly Ash)

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ABSTRACT
Cadmium (Cd) is a heavy metal that is commonly found in aquatic environments and has a high level of toxicity. Adsorption is the adsorption process of a substance on the surface of another substance due to the molecular attraction that occurs between the adsorbate and the adsorbent. One of the adsorbents that can be used to remove Cd metal is POFA-based zeolite. This study aims to analyze the effect of pH, dose, contact time and initial concentration on the adsorption of Cd2+ metal using POFA-based synthetic zeolite and to analyze the isotherms and kinetics of the adsorption process. The research methodology was carried out by varying the pH 3; 4; 5; 6; 7, adsorbent dose 1; 1.5; 2; 2.5; 3 g/L, contact time 5, 10, 15; 30; 60; 90; 120; 150; 180 minutes, and initial concentrations of Cd metal 2, 4, 6, 8, 10, 15 mg/L. Based on the research results, it was found that the optimum conditions occurred at pH 6, the adsorbent dose was 2 g/L, the equilibrium time was 120 minutes and the initial concentration was 2 mg/L with a removal efficiency of 99.06%. The adsorption process shows that the type of adsorption isotherm obtained is Langmuir and Freundlich isotherms, with an R2 value of 0.99 and a Langmuir isotherm Qm value of 64.58 mg/g with a KL value of 0.77 L/mg, while for the Freundlich isotherm the KF value is 38.46 with an n value of 1.11. The adsorption kinetics model in this study followed the pseudo-second order kinetics model and obtained a correlation coefficient (R2) of 0.94 and Qe = 5.167 mg/g with a K2 value of 0.449 (g/mg.min).
Keywords: adsorption, cadmium, POFA, isotherm, kinetics, zeolite

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1807111040

Penerbit

Pekanbaru : Universitas Riau – Fakultas Teknik – Teknik Lingkungan., 2022

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1807111040

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

DAUS

Versi lain/terkait

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