CD Skripsi

Optimasi Pembuatan Karbon Aktif Dari Fluff Teh (Camellia Sinensis) Menggunakan Pendekatan Respon Surface Methodology Untuk Mengadsorpsi Zat Warna Congo Red

---

Tea fluff is one of the residual waste from tea factory processing in the form of solid and incomplete tea leaves and twigs resulting from the sorting of green tea making. Tea fluff itself has various kinds of amino acids, proteins, cellulose, micro elements, tannins and polyphenols which can be used as adsorbents. This research aims to analyze the optimum conditions for making active carbon from tea fluff using the Response Surface Methodology approach, namely Box Behnked Design (BBD) and analyzing the adsorption efficiency of activated carbon in adsorbing congo red dye on the parameters of pH, adsorbent dose, contact time and adsorbate concentration. In this research, tea fluff was converted into biochar through a pyrolysis process and then the biochar was activated physically and chemically with variations in temperature (450oC, 500oC and 550oC), reaction time (60, 90 and 120 minutes) and HCl concentration (5%, 10% and 15%) to obtain optimum conditions for activated carbon used as an adsorbent for Congo red dye. Characterization of tea fluff adsorbent was carried out using a CHN analyzer, UV-Vis Spectrophotometry, FTIR, SEM-EDX, BET and XRD. Optimum conditions occured at a temperature of 450oC for 60 minutes and an HCl concentration of 8.77% with a water content value of 4.45%; ash content 2.59%; volatile meter 3.50%; fixed carbon 89.50% and yield 50.03%. FTIR results show that there are C-H aromatic, C-H aliphatic, C-O carbonyl, C=C and C-N functional groups. SEM-EDX results show the presence of elements C, O, Mg, Al and K which have a porous texture, irregular and rough shapes. The BET results show that the adsorbent surface area before adsorption is 44.8667 m2/g and after adsorption is 20.6601 m2/g. The results of the x-ray diffractometer showed that the tea fluff adsorbent was persentase amorphous 95%. The adsorption kinetics model in this study is second order, characterized by a coefficient of determination (R2) value of 0.9999 and the adsorption isotherm model follows the Langmuir equation with the equation y = 0.0248x + 0.0674 with an R2 value of 0.9904 which can be assumed to be the mechanism adsorption occurs chemically with the active sites on the surface of the adsorbent being homogeneous and forming

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

2003114490

Penerbit

Pekanbaru : Universitas Riau FMIPA Kimia., 2024

Deskripsi Fisik

-

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

2003114490

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

KIMIA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Mutia

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar