Adsorption of Indigo Carmine Dye by Composite Activated Carbons Prepared from Plastic Waste (PET) and Banana Pseudo Stem

• 作者: Abdoul Ntieche Rahman Baissassou Debina Dai-Yang Lemankreo Daniel Fotio Kamdem Tamo Arnaud Sakué Ngankam Eric
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 化学
• 关键词: ADSORPTION Activated Carbon COMPOSITE Plastic Waste DYE
• 年，卷（期）: 2020,（12）
• 页码范围: 39-55
• 页数: 17页
• 分类号: O64

摘要

This study is on the adsorption of indigo carmine dye by composite activated carbons prepared from banana pseudo stems and plastic waste. The activated carbons named TB₁P₁, TB₁P_1h and TB₂P₁ were obtained by pyrolysis at 700<span style="white-space:nowrap;">&#176;</span>C under steam of raw materials at different ratios (1:1 and 2:1). They were characterized by different techniques such as SEM/EDX, Raman Spectroscopy, FTIR, XRD, TGA/DTA and BET/BJH. Analyses indicate amorphous structures with specific surface areas of 424.37;385.45 and 338.84 m²/g for TB₁P₁, TB₁P_1h and TB₂P₁ respectively. The study of the adsorption of indigo carmine dye by these adsorbents was carried out by varying parameters such as contact time, mass of adsorbent and initial concentration of the dye. The maximum retention is 94.71%, 86.18% and 84.17% for TB₁P₁, TB₁P_1h and TB₂P₁ respectively after 60 min of stirring, for a pH = 4.6 using 0.6 g of adsorbents. The adsorption of indigo carmine follows well, the Langmuir model, with the most suitable kinetics as pseudo second order.