Ecotoxicity of Tar from Coffee Grounds and Pine Pellet Gasification Process

Małgorzata Hawrot-Paw, Adam Koniuszy, Andrzej Borusiewicz (), Zbigniew Skibko, Wacław Romaniuk, Grzegorz Zając and Joanna Szyszlak-Bargłowicz
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Małgorzata Hawrot-Paw: Department of Renewable Energy Engineering, West Pomeranian University of Technology in Szczecin, Pawla VI 1, 71-459 Szczecin, Poland
Adam Koniuszy: Department of Renewable Energy Engineering, West Pomeranian University of Technology in Szczecin, Pawla VI 1, 71-459 Szczecin, Poland
Andrzej Borusiewicz: Department of Agronomy, Modern Technology and Informatics, International Academy of Applied Sciences in Lomza, 18-402 Lomza, Poland
Zbigniew Skibko: Faculty of Electrical Engineering, Bialystok University of Technology, Wiejska 45, 15-351 Bialystok, Poland
Wacław Romaniuk: Institute of Technology and Life Sciences—National Research Insitute, Hrabska 3, 05-090 Falenty, Poland
Grzegorz Zając: Department of Power Engineering and Transportation, University of Life Sciences in Lublin, Gleboka 28, 20-612 Lublin, Poland
Joanna Szyszlak-Bargłowicz: Department of Power Engineering and Transportation, University of Life Sciences in Lublin, Gleboka 28, 20-612 Lublin, Poland

Sustainability, 2024, vol. 16, issue 15, 1-16

Abstract: This study determined the toxicity of the condensates produced during the gasification of two waste types. Coffee grounds, pine pellets, and a mixture of both substrates at a ratio of 1:1 were used in the study. Two microbiotests were applied for soil plants and aquatic macrophytes, and quantitative analysis of the soil microbiome for primary taxonomic groups of microorganisms was conducted. Three contamination rates were used in the Phytotoxkit test and the microbiological tests, 100, 1000, and 10,000 mg·kg −1 d.m. of soil, while in the aquatic organism studies, successive two-fold serial dilutions of condensates were used. The presence of liquid waste from the gasification process adversely affected the germination and development of terrestrial plants and the vegetative growth of aquatic plants. The condensate components modified the composition of the soil microbiome, adversely affecting soil fertility. The negative impact increased with increasing levels of contamination and primarily depended on the type of substrate from which the gasification process produced the liquid waste.

Keywords: gasification; liquid waste; tar; ecotoxicity; phytotoxicity; Lemna minor test; soil microorganisms; soil fertility (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
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