EJPAU 2011. Stolarski M. , Szczukowski S. , Tworkowski J. , Klasa A. CHARACTERISTICS OF PELLETS MADE OF FOOD PROCESSING WASTES AND OF SHORT-ROTATION WILLOW BIOMASS

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2011
Volume 14
Issue 2

Topic:

Environmental Development

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Stolarski M. , Szczukowski S. , Tworkowski J. , Klasa A. 2011. CHARACTERISTICS OF PELLETS MADE OF FOOD PROCESSING WASTES AND OF SHORT-ROTATION WILLOW BIOMASS, EJPAU 14(2), #04.
Available Online: http://www.ejpau.media.pl/volume14/issue2/abs-04.html

CHARACTERISTICS OF PELLETS MADE OF FOOD PROCESSING WASTES AND OF SHORT-ROTATION WILLOW BIOMASS

Mariusz Stolarski¹, Stefan Szczukowski¹, Józef Tworkowski¹, Andrzej Klasa²
¹ Department of Plant Breeding and Seed Production, University of Warmia and Mazury in Olsztyn, Poland
² Department of Agricultural Chemistry and Environmental Protection, University of Warmia and Mazury in Olsztyn, Poland

ABSTRACT

The subject of the studies was to determine some parameters of pellets produced from waste materials generated during production of the certified seed materials of barley, wheat, red fescue as well as mixed cereal grains wastes, produced from sunflower husk and from short-rotation willow biomass. As a control pellets produced using dry oak or pine woodchips were applied. The following parameters were taken into account: water content, ash content, calorific value and elemental composition (C, N, H and S). Pellets produced from mixed cereal wastes showed the highest moisture content while pellets from other studied wastes manifested
moisture content close to oak woodchips pellets. Crude ash content in pellets produced from waste substances was several times higher than in woodchips pellets and considerably exceeded the standard value. Analyses of caloric and heating values showed that pellets from mixed cereal wastes had the lowest values of those parameters. Any of pellets produced from waste materials met demands of first class wood pellet given in German standard DIN 51731 for pellets heating value between 17.5 and 19.5 MJ·kg^-1. Sulphur content in waste pellets was sometimes higher by factor of twenty than maximal value for first class pellets (amounting to 0.154% in sunflower husk pellets when allowable level is 0.08% S). Quality parameters of pellets made of short-rotation willow biomass were higher then determined in cereal wastes pellets because of its higher caloric values and lower ash, sulfur and nitrogen concentrations.

Key words: pellets, food processing wastes, willow biomass, quality parameters.

Mariusz Stolarski
Department of Plant Breeding and Seed Production,
University of Warmia and Mazury in Olsztyn, Poland
pl. Łódzki 3, 10-724 Olsztyn-Kortowo, Poland
email: mariusz.stolarski@uwm.edu.pl

Stefan Szczukowski
Department of Plant Breeding and Seed Production,
University of Warmia and Mazury in Olsztyn, Poland
pl. Łódzki 3, 10-724 Olsztyn-Kortowo, Poland
email: stefan.szczukowski@uwm.edu.pl

Józef Tworkowski
Department of Plant Breeding and Seed Production,
University of Warmia and Mazury in Olsztyn, Poland
pl. Łódzki 3, 10-724 Olsztyn-Kortowo, Poland
email: jozef.tworkowski@uwm.edu.pl

Andrzej Klasa
Department of Agricultural Chemistry and Environmental Protection,
University of Warmia and Mazury in Olsztyn, Poland
Oczapowskiego 8, 10-744 Olsztyn, Poland
email: aklasa@uwm.edu.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.