An evaluation of renewable fuels microstructure after the combustion process

  • Małgorzata Wilk AGH University of Science and Technology, Mickiewicza 30 Av., 30 -056 Krakow, Poland
  • Aneta Magdziarz AGH University of Science and Technology, Mickiewicza 30 Av., 30 -056 Krakow, Poland


The aim of the presented study is to investigate the morphological characteristics of biomass and sewage sludge ash andraw samples by FTIR and SEM methods. Biomass and sewage sludge are adequate renewable fuels, but require furtherinvestigation focusing on the evaluation and degradation of organic and inorganic compounds in renewable fuels. In this study,biomass and sewage sludge and its ash were examined in terms of physical and chemical properties to gain an understandingof their compositional and structural characteristics through analytical approaches such as CHNS, ash composition, HHV,FTIR and SEM. The FTIR was recorded using the Bruker Alpha FT-IR Spectrometer. FTIR spectra reflects the complexand different compositions of studied fuels and the influence of the combustion process. The presented spectra evidentlydepict changes in the bond structure of the studied materials under the combustion process. Degradation of the morphologystructure is also confirmed by SEM.

Author Biographies

Małgorzata Wilk, AGH University of Science and Technology, Mickiewicza 30 Av., 30 -056 Krakow, Poland
Department of Thermal Engineering and the Environment Protectionassistant professor 
Aneta Magdziarz, AGH University of Science and Technology, Mickiewicza 30 Av., 30 -056 Krakow, Poland
Department of Thermal Engineering and the Environment Protectionassistant professor


[1] Central Statistical Office of Poland, 2015.
[2] Fernández R. G., García C. P., Lavín, A. G., de las Heras, J. L. B.: Study of main combustion characteristics for biomass fuels used in boilers. Fuel Processing Technology 103, 2012, 16–26.
[3] Nanda S., Mohanty P., Pant K. K., Naik S., Kozinski J. A., Dalai A. K.: Characterization of north american lignocellulosic biomass and biochars in terms of their candidacy for alternate renewable fuels. Bioenergy Research 6, 2013, 663–677.
[4] Díaz-Ramírez M., Sebastián F., Royo J., Rezeau A.: Combustion requirements for conversion of ash-rich novel energy crops in 250 kWth multifuel grate fired system. Energy 46, 2012, 636–643.
[5] Wilk M., Magdziarz A., Kalemba I., Gara P.: Carbonisation of wood residue into charcoal during low temperature process. Renewable Energy 85, 2016, 507-5013.
[6] Directive 2009/28/EC of the European Parliament and of the Council of 23 April 2009 on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC (Text with EEA relevance).
[7] Magdziarz A., Werle S.: Analysis of the combustion and pyrolysis of dried sewage sludge by TGA and MS. Waste Management 34, 2014, 174–179.
[8] Wilk M., Magdziarz A., Kalemba I.: Characterisation of renewable fuels’ torrefaction process with different instrumental techniques. Energy 87, 2015, 259–269.
[9] Garcia G., Arauzo J., Gonzalo A., Sanchez J. L., Abrego, J.: Influence of feedstock composition in fluidised bed co-gasification of mixtures of lignite, bituminous coal and sewage sludge. Chemical Engineering Journal 222, 2013, 345-352.
[10] Magdziarz A., Wilk M., Kosturkiewicz B.: Investigation of sewage sludge preparation for combustion process. Chemical Processing Engineering 32, 2011, 299–309.
[11] Wilk M.: A Novel Method of Sewage Sludge Pretreatment - HTC, E3W Web of Conferences, (accepted).
[12] Magdziarz A., Wilk M.: thermogravimetric study of biomass, sewage sludge and coal combustion, Energy Conversion Management 75, 2013, 425–430.
[13] Senneca O.: Kinetics of pyrolysis, combustion and gasification of three biomass fuels. Fuel Processing Technology 88, 2007, 87-97.
[14] Darvell L. I., Jones J. M., Gudka B., Baxter X. C., Saddawi A., Williams A., Malmgren A.: Combustion properties of some power station biomass fuels. Fuel 89, 2010, 2881-2890.
[15] Kastanaki E., Vamvuka D.: A Comparative reactivity and kinetic study on the combustion of coal-biomass char blends. Fuel 85, 2006, 1186-1193.
[16] Williams A., Pourkashanian M., Jones J. M.: Combustion of pulverised coal and biomass. Progress in Energy Combustion Science 27, 2001, 587-610.
[17] Magdziarz A., Wilk M., Zajemska M.: Modelling of pollutants concentrations from the biomass combustion process. Chemical Processing Engineerin 32, 2011, 423–33.
[18] Varol M., Atimtay A. T., Bay B., Olgun H.: Investigation of co-combustion characteristics of low quality lignite coals and biomass with thermogravimetric analysis. Thermochimica Acta, 510, 2010, 195-201.
[19] van der Stelt M. J. C., Gerhauser H., Kiel J. H. A., Ptasinski K. J.: Biomass upgrading by torrefaction for the production of biofuels: a review. Biomass and Bioenergy 35, 2011, 3748-3762.
[20] Díaz-Ramírez M., Frandsen F. J., Glarborg P., Sebastián F., Royo J.: Partitioning of K, Cl, S and P during combustion of poplar and brassica energy crops. Fuel 134, 2014, 209–219.
[21] Magdziarz A., Dalai A. K., Kozinski J.A.: Chemical composition, character and reactivity of renewable fuel ashes. Fuel 176, 2016, 135–145.
[22] Komilis D., Kissas K., Symeonidis A.: Effect of organic matter and moisture on the calorific value of solid wastes: an update of the tanner diagram. Waste Management 34, 2014, 249–255.
[23] Demirbas A., Gullu D., Caglar A., Akdeniz F.: Determination of calorific values of fuel from lignocellulosic, Energy Sources 19, 1997, 765−770.
[24] Xu F., Yu J., Tesso T., Dowell F., Wang D.: Qualitative and quantitative analysis of lignocellulosic biomass using infrared techniques: a mini-review. Applied Energy 104, 2013, 801-809.
[25] Thinpkhunthod P., Meeyyoo V., Rangsunvigit P., Rirksomboon T.: describing sewage sludge pyrolysis kinetics by a combination of biomass fractions decomposition. Journal of Analytical Applied Pyrolysis 79, 2007, 78-85.
[26] Grube M., Lin J. G., Lee P. H., Kokorevicha S.: evaluation of sewage sludge-based compost by FT-IR spectroscopy. Geoderma 130, 2006, 324-333.
[27] Tantawy M. A., El-Roudi A. M., Abdalla E. M., Abedelzaher M. A.: Evaluation of the pozzolanic activity of sewage sludge ash. ISRN Chemical Engineering, Article ID 487037, 2012, 8 pages, 2012.
How to Cite
WILK, Małgorzata; MAGDZIARZ, Aneta. An evaluation of renewable fuels microstructure after the combustion process. Journal of Power Technologies, [S.l.], v. 97, n. 4, p. 265--271, dec. 2017. ISSN 2083-4195. Available at: <>. Date accessed: 23 july 2024.
Combustion and Fuel Processing


Renewable fuel, Biomass, Sewage sludge, Ash, FTIR, SEM

Most read articles by the same author(s)

Obs.: This plugin requires at least one statistics/report plugin to be enabled. If your statistics plugins provide more than one metric then please also select a main metric on the admin's site settings page and/or on the journal manager's settings pages.