CD Skripsi

Serbuk Kulit Kayu Jabon Putih (Anthocephalus Cadamba Miq.) Didoping Asam Humat Dari Air Gambut Untuk Adsorpsi Ion Logam Timbal(II)

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White jabon bark (Anthocephalus cadamba Miq.) has the potential to be developed as an adsorbent for adsorbing lead(II) metal ions because it has a fairly high cellulose content. This research aims to determine the efficiency and optimum adsorption capacity for variations in pH, contact time and adsorbate concentration of white Jabon bark powder doped with humic acid from peat water on the adsorption of lead(II) ions. Jabon bark powder was activated using NaOH in a ratio of 1:0, 1:1, 1:2, 1:3, 1:4, and 1:5 (w/w). Jabon bark powder was characterized using iodine adsorption and methylene blue adsorption to determine the optimum NaOH ratio. The powder that is activated with the optimum NaOH ratio is doped with humic acid from peat water. Functional group analysis of Jabon bark powder was performed using FTIR. Surface morphology and determination of the elements contained in jabon bark powder were analyzed using SEM-EDS. The characterization results for optimum NaOH yield were 1:3 (w/w) with an iodine adsorption capacity of 294.8037 mg/g and a methylene blue adsorption capacity of 21.3484 mg/g with a surface area of 79,1540 m2/g. Optimum adsorption was found at pH 4, contact time of 30 minutes, and an adsorbate concentration of 140 mg/g with an adsorption efficiency of 99.47% and adsorption capacity 6.6043 mg/g. The functional groups contained in Jabon bark powder resulting from FTIR are C-H, C-O, C-N, C=C aromatic, C-H stretch, and O-H. The results of SEM-EDS show that the elements K and Mg are missing and Ca has decreased, identifying the loss of impurities so that the pores of the powder are more open after being activated and doped with humic acid, which can be seen in the morphology of the powder. The adsorption kinetics in this study followed pseudo second order kinetics with the equation y = 0.2158x – 0.0038 and R2 = 1. The adsorption isotherm model in this study followed the Langmuir isotherm with the equation y = 0.1914x – 0.1196 and R2 = 0.9897 which assumes that adsorption occurs chemically and forms a monolayer.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1903112370

Penerbit

Pekanbaru : Universitas Riau – FMIPA – Kimia., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1903112370

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Mutia

Versi lain/terkait

Lampiran Berkas

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