Skripsi

KOMPOSIT HIDROKSI LAPIS GANDA Ca-Al/BIOCHAR SEBAGAI ADSORBEN ZAT WARNA METILEN BIRU

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Penilaian

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Ca-Al layered double hydroxides synthesis and Ca-Al layered double hydroxides/biochar composite have been performed by coprecipitation method and characterized by XRD, FT-IR, BET, TG-DTA and SEM-EDX analyzes. Preparation composite of Ca-Al layered double hydroxides with biochar in this study aims to increase the surface area of the material so that it can increase its effectiveness as an adsorbent for methylene blue dyes. XRD analysis showed Ca-Al/biochar composite still have diffraction peaks which indicate the presence of Ca-Al layer double hydroxide and biochar materials. FT-IR analysis on Ca-Al layer double hydroxide produces vibrations that indicate the presence of O-H, N = O, and Ca-O and Al-O groups and in biochar produces vibrations that indicate the presence of OH, C = O, and Si-O-Si, where in the composite material all functional groups are contained in the Ca-Al double layer hydroxy and biochar. BET analysis shows the surface area of the double layer hydroxy is 29.33m2/g and biochar have a surface area of 50,936 m2/g and composites have a surface area of 38,692 m2/g; 40,748 m2/g and 158,291 m2/g. TG-DTA analysis showed that Ca-Al layer double hydroxide material, biochar and Ca-Al/biochar double layer hydroxy composite can be decomposed. SEM-EDX analysis showed that the most component in Ca-Al layer double hydroxide material and composite was oxygen, while in biochar the most component was carbon. Data on the pH variation in Ca-Al bilayer hydroxy material, biochar and Ca-Al/biochar bilayer hydroxy composite showed maximum adsorption occurs at pH 5. The kinetics of adsorption on layer double hydroxide material, biochar and Ca-Al/biochar double layer hydroxy composite show that the pseudo second order kinetics model is more suitable for adsorption of methylene blue dyes. The adsorption isotherm equation in the double layer hydroxy material and biochar is more suitable using the freundlich isotherm model while the Ca-Al/biochar layer double hydroxide composite material is more effective using the Langmuir adsorption isotherm model. The most effective solvent for desorption of methylene blue dyes in double-layer hydroxy adsorbents is HCl while in biochar and composites 1: 0.1 is ethanol, while in composite materials 1:0.5; 1:1, 1:3 and 1:5 are more suitable to use acetone solvents. Regeneration carried out showed that composite materials have better regeneration ability than the constituent materials.

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Availability

Inventory Code	Barcode	Call Number	Location	Status
2007001882	T35070	T350702020	Central Library (REFERENCES)	Available but not for loan - Not for Loan

Detail Information

Series Title

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Call Number

T350702020

Publisher

Inderalaya : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya., 2020

Collation

xix, 121 hlm. : ilus. 21 cm

Language

Indonesia

ISBN/ISSN

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Classification

620.118 07

Content Type

Text

Media Type

unmediated

Carrier Type

-

Edition

-

Subject(s)

Jurusan Kimia
Komposit Hidroksi-Zat Warna

Specific Detail Info

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Statement of Responsibility

DS

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