Qualitative assessment shows biogas production and methane levels in various substrates, indicating effective waste recycling.
A qualitative assessment of the biogas potential of organic wastes generated during the application of various methods of cyanobacteria control in water bodies is presented. Experiments have been carried out in the water area of the Moscow city backwaters using different organic substrates: barley straw, suspension of microalgae Chlorella kessleri, submerged higher aquatic vegetation, air-water macrophytes and chitosan. During the digestion process, the percentage of methane in the generated biogas was monitored. It is shown that the highest percentage of methane is formed during digestion of air-water macrophytes, namely, narrow-leaved hornwort (Typha angustifolia), marsh iris (Iris pseudacorus), yellow pond lily (Nuphar lutea), common reed (Phragmites australis), lake reed (Scirpus lac. Albescens), water hyacinth (Eichhornia crassipes), water lettuce (Pistia stratiotes). It is noted that in addition to the biogas produced, anaerobic digestion of organic waste produces compost, which can be further used as biofertiliser.
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Velmozhina et al. (2025) studied this question.
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