The Effect of the Microwave Method on the Surface-Pore Structure of Activated Carbon Produced From Waste Biomass (Hot Red Pepper Stalks)
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https://doi.org/10.5281/zenodo.6948282Keywords:
Waste biomass, Isot pepper stalks, Microwave furnace, Active carbonAbstract
Activated carbon has been proven by many studies that it is an adsorbent material that is widely used in the removal of environmental pollutants by the adsorption process. In recent years, activated carbon production using waste biomass resources has been preferred due to its advantages such as waste disposal and obtaining high porous, cheap adsorbent. Waste biomass is the result of the use and processing of agricultural products, which are abundant in nature. In Turkey, hot red pepper (Capsicum annuum L.), which is widely used in spice production, is one of these agricultural products and most of the peppers produced are grown in the southeast region. The most important pepper of this region is isot grown in Şanlıurfa and documented by geographical indication regulations. Within the scope of this study, activated carbon was produced from isot stalks by two different methods. In the first method, isot stalks were impregnated with 100% ZnCl2 (zinc chloride), H3BO3 (boric acid) and H3PO4 (phosphoric acid) chemicals for 24 hours. In the second method, isot stalks with 100% H3PO4 (phosphoric acid) chemical were impregnated in a microwave oven at 500 W wave power for 15 minutes in a CO2 gas environment. Then, isot stalks were carbonized in a muffle furnace (650 ºC, 30 min). The characterization of activated carbons obtained by two different methods was performed by using BET for the determination of surface area and pore sizes, FT-IR for the determination of functional groups in its structure and SEM for obtaining surface morphological images were performed. According to the results obtained, cheap and environmentally friendly adsorbents were produced from waste isot stalks, and both waste disposal was done and a product with high added value was obtained.
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