Porous Structure and Fractal Dimensions of Activated Carbon Prepared from Waste Coffee Grounds-Reference-Cited by-同舟云学术

Porous Structure and Fractal Dimensions of Activated Carbon Prepared from Waste Coffee Grounds

Published:2023-09-08 Issue:18 Volume:16 Page:6127
ISSN:1996-1944
Container-title:Materials
language:en
Short-container-title:Materials

Author:

Sklepova Sofiia Victoriia¹,Ivanichok Nataliia¹,Kolkovskyi Pavlo²,Kotsyubynsky Volodymyr¹,Boychuk Volodymyra³,Rachiy Bogdan¹^ORCID,Uhryński Andrzej⁴,Bembenek Michał⁵^ORCID,Ropyak Liubomyr⁶^ORCID

Affiliation:

1. Department of Material Science, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., 76018 Ivano-Frankivsk, Ukraine

2. Department of Solid State Chemistry, V. I. Vernadsky Institute of General and Inorganic Chemistry, National Academy of Sciences of Ukraine, 32/34 Academician Palladin Ave., 03142 Kyiv, Ukraine

3. Department of Physics, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str., 76018 Ivano-Frankivsk, Ukraine

4. Department of Machine Design and Maintenance, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, Poland

5. Department of Manufacturing Systems, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, Poland

6. Department of Computerized Mechanical Engineering, Ivano-Frankivsk National Technical University of Oil and Gas, 15 Karpatska Str., 76019 Ivano-Frankivsk, Ukraine

Abstract

The present work reports the results of a systematic study on the evolution of the morphological properties of porous carbons derived from coffee waste using a one-pot potassium-hydroxide-assisted process at temperatures in the range of 400–900 °C. Raw materials and obtained carbons were studied by TG, DTG, SEM and nitrogen adsorption porosimetry. The decomposition temperature ranges for hemicellulose, cellulose and lignin as the main component of the feedstock have been established. It is shown that the proposed method for the thermochemical treatment of coffee waste makes it possible to obtain activated carbon with a controllable pore size distribution and a high specific surface area (up to 1050 m2/g). A comparative study of the evolution of the distribution of pore size, pore area and pore volume has been carried out based on the BJH and NL-DFT (slit-like pores approximation) methods. The fractal dimension of the obtained carbons has been calculated by Frenkel–Halsey–Hill method for single-layer and multilayer adsorptions.

Publisher

MDPI AG

Subject

General Materials Science

Link

https://www.mdpi.com/1996-1944/16/18/6127/pdf

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