Analysis of the Possibility of Management of Curly-Leaf Pondweed for Energetic Purposes

Marcin Herkowiak, Andrzej Osuch, Ewa Osuch, Bogusława Waliszewska and Grzegorz Zając
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Marcin Herkowiak: Institute of Technology and Life Sciences–National Research Institute, Falenty, Hrabska Avenue 3, 05-090 Raszyn, Poland
Andrzej Osuch: Department of Biosystems Engineering, Poznań University of Life Sciences, 50 Wojska Polskiego St., 60-637 Poznań, Poland
Ewa Osuch: Department of Biosystems Engineering, Poznań University of Life Sciences, 50 Wojska Polskiego St., 60-637 Poznań, Poland
Bogusława Waliszewska: Department of Chemical Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 38/42, 60-637 Poznań, Poland
Grzegorz Zając: Department of Power Engineering and Transportation, Faculty of Production Engineering, University of Life Sciences in Lublin, Głęboka 28, 20-612 Lublin, Poland

Energies, 2021, vol. 14, issue 17, 1-14

Abstract: The possibilities of using curly-leaf pondweed for energy purposes were analyzed. This plant contributes to overgrowth of water reservoirs, causing their eutrophication. The plants examined were from two different water reservoirs: Lake Winiary (Gniezno) and Lake Rusalka (Poznan). On the basis of the investigations, it was determined that it is possible to use curly-leaf pondweed for energy purposes, both in the combustion method and in the biomethane fermentation process. Studies were performed to assess the suitability of the plants for combustion as a solid biofuel and studies on the use of pondweed as a fermenter feedstock. The calorimetric study showed the possibility of obtaining more energy for the curly-leaf pondweed coming from Lake Rusalka. The heat of combustion of these plants was 13.95 MJ·kg −1 (Winiary pondweed) and 9.10 MJ·kg −1 (Rusalka pondweed). On the other hand, the calorific value of these plants was 12.60 MJ·kg −1 (Winiary pondweed) and 7.80 MJ·kg −1 (Rusalka pondweed). In the case of biogas yield studies, significantly higher biogas production was observed for Lake Rusalka pondweed than for Lake Winiary pondweed. The total biogas yield for these plants was 8.05 m 3 ·Mg −1 for Rusalka pondweed and 3.19 m 3 ·Mg −1 for Winiary pondweed. Differences in the chemical composition of pondweed originating from different lakes were also found, which translated into differences in the amount of energy that could be obtained from plants from both stands.

Keywords: lake restoration; curly-leaf pondweed; biomass; energy use; combustion; biogas; elemental analysis; proximate analysis; biochemical analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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