Synthesis and Characterization of Activated Carbon from Waste Biomass (Tobacco Stalk) by Microwave Assisted Impregnation Method

Abstract

In this study, activated carbon was synthesized from waste biomass source tobacco stalks (TS). Activated carbons were obtained because of impregnation with chemical activator (ZnCl2) in the microwave environment, which was integrated into the traditional activation method. In addition, the effects of microwave environment (gas, wavelength, and time), oven activation (time and temperature) and impregnation rates on synthesis were investigated. Activated carbon characterization was investigated using BET, FT-IR and SEM analyses. The surface area of the activated carbon synthesized with the ZnCl2 chemical, and microwave assisted was found to be 731,799 m2 g-1 and the iodine number was 1048 mg g-1. In addition, to compare the specificity of the method used for the synthesis of activated carbon within the scope of the study, the traditional activation process with the chemical ZnCl2 was also performed. The surface area of activated carbon obtained by the traditional method was found to be 323,648 m2 g-1 and the iodine number was 438 mg g-1. According to the results obtained, it is seen that the microwave assisted impregnation process has a significant effect on the synthesis of activated carbon.

Keywords

• Waste Biomass Tobacco Stalk Microwave Activated Carbon

Atık biyokütleden (Tütün Sapı) Mikrodalga Destekli İmpregnasyon Yöntemi ile Aktif Karbon Sentezi ve Karakterizasyonu

Abstract

Bu çalışmada atık biyokütle kaynağı tütün saplarından (TS) aktif karbon sentezi yapılmıştır. Aktif karbonlar geleneksel aktivasyon yöntemine entegre edilen mikrodalga ortamında kimyasal aktifleştirici (ZnCl2) ile impregnasyon işlemi sonucu elde edilmiştir. Ayrıca mikrodalga ortamı (gaz, dalga boyu ve süre), Fırın aktivasyonu (süre ve sıcaklık) ve impregnasyon oranlarının sentez üzerindeki etkileri incelenmiştir. Aktif karbon karakterizasyonu BET, FT-IR ve SEM analizleri kullanılarak incelenmiştir. ZnCl2 kimyasalı ile mikrodalga destekli sentezlenen aktif karbonun yüzey alanı 731,799 m2 g-1 ve iyot sayısı 1048 mg g-1 olarak bulunmuştur. Ayrıca çalışma kapsamında aktif karbon sentezi için kullanılan yöntemin özgünlüğünü kıyaslamak için ZnCl2 kimyasalı ile geleneksel aktivasyon işlemi de yapılmıştır. Geleneksel yöntem ile elde edilen aktif karbon yüzey alanı 323,648 m2 g-1 ve iyot sayısı 438 mg g-1 olarak bulunmuştur. Elde edilen sonuçlara göre mikrodalga destekli impregnasyon işleminin aktif karbon sentezinde önemli etkiye sahip olduğu görülmektedir.

Keywords

• Atık Biyokütle
• Tütün Sapı
• Mikrodalga
• Aktif Karbon

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