Technologies for Environmental Safety Application of Digestate as Biofertilizer

Ablіeіeva, Iryna; Berezhna, Iryna; Berezhnyi, Dmytrii; Prast, Alex Enrich; Geletukha, G.G.; Lutsenko, Serhii; Yanchenko, Ilona; Carraro, Giacomo

doi:10.12912/27197050/147154

Cited by 6 publications

(3 citation statements)

References 30 publications

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“…The radiation background of the experimental site was 10.5 µR/h, the soil at the research site was 11.0-12.0 µR/h, and the phosphogypsum itself was 12.5 µR/h. Summarising a series of ecological regularities of the impact of phosphogypsum on the soil complex, confirmed by previous studies in Ukraine [78,79], and consistent with results obtained by other researchers in this field [80][81][82], we can use the phosphogypsum to improve ecosystem services.…”

Section: Discussionsupporting

confidence: 90%

Agroecological Transformation in the Salt Composition of Soil under the Phosphogypsum Influence on Irrigated Lands in Ukraine

Onopriienko,

Makarova,

Hapich

et al. 2024

Agriculture

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The purpose of our research is to evaluate the agroecological condition of soils under long-term irrigation (over 50 years) and to improve existing measures to slow down degradation processes by introducing phosphogypsum. The possibility of simultaneously addressing the ecological issue of using large amounts of phosphogypsum waste and the agronomic characteristics of slowing or eliminating salinisation processes in irrigated soils has been studied and justified. The research methodology was based on the comparison of different meliorative doses of phosphogypsum under the following conditions: by the amount of exchangeable sodium that should displace calcium in the calculated soil layer; by the coagulation limit; and by the absorption norm and the corresponding amount of sodium coming with irrigation water. To determine water-soluble salts (anions, cations) and pH level, a water extract was utilized. Multi-year studies to determine the impact of phosphogypsum on irrigation-salinised soils with and without irrigation showed positive changes in the anion–cation composition of water extraction, resulting in a reduction in the degree of the salinity of these soils. It was established that in chernozem soils under irrigation, the sodium adsorption ratio decreases by 74.5% compared to the control indicators, and without irrigation, by 23%. The best results in the displacement of exchangeable sodium were observed when phosphogypsum was applied at a dose calculated by the coagulation limit without irrigation and with irrigation—by the absorption norm.

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Section: Discussionsupporting

confidence: 90%

Agroecological Transformation in the Salt Composition of Soil under the Phosphogypsum Influence on Irrigated Lands in Ukraine

Onopriienko,

Makarova,

Hapich

et al. 2024

Agriculture

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“…Our previous research study showed that centrifugation is one of the most effective solid-liquid separation technologies for digestate to obtain a solid fraction with a high level of dry matter and improve nutrient fractionation between the two fractions [16]. Thus, given the uneven distribution of nutrients in solid and liquid fractions (Figure 3), solid-liquid separation gives the two products with specific functionality [4].…”

Section: Resultsmentioning

confidence: 99%

Digestate Potential to Substitute Mineral Fertilizers: Engineering Approaches

Ablіeіeva

Geletukha

Kucheruk

et al. 2022

JES

Self Cite

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The study aims to define the potential and technological aspects of the digestate treatment for its application as a biofertilizer. Life cycle assessment methodology was used in terms of digestate quality management. The potential of nutrients, organic carbon, and useful microelements in the digestate allows for its consideration as a mineral fertilizer substitute and soil improver. The valorization of digestate as fertilizer requires quality management and quality control. Based on the research focus, the successful soil application of digestate post-treatment technologies was analyzed. Among the different commercial options for digestate treatment and nutrient recovery, the most relevant are drying, struvite precipitation, stripping, evaporation, and membranes technology. Comparing the physical and chemical properties of the whole digestate, separated liquid, and solid liquor fractions showed that in the case of soil application of granular fertilizer, nutrients from the digestate are released more slowly than digestate application without granulation. However, realizing this potential in an economically feasible way requires improving the quality of digestate products through appropriate technologies and quality control of digestate products. To support the manufacture of quality digestate across Europe, the European Compost Network developed a concept for a pan-European quality assurance scheme.

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“…All these factors are considered promising for using organic-mineral complexes of biofertilizers. Mineral component improves both the elemental composition of the biofertilizer and acts as an additional element of nutrition in the processes of bacterial processing of organic raw materials, with an impact on the quality of the product [15].…”

Section: Literature Reviewmentioning

confidence: 99%

Effect of Phosphogypsum Addition on Methane Yield in Biogas and Digestate Properties During Anaerobic Digestion

Chubur

Chernysh

Ferchau

et al. 2022

JES

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The study discussed the use of phosphogypsum by-product waste in anaerobic digestion processes. Besides the production of biogas from plant substrate with the addition of phosphogypsum, the focus was placed on the enrichment of digestate with phosphogypsum as a mineral additive to increase the concentration of valuable macro-and microelements. The component composition of the obtained digestates was analyzed, and opportunities for additional research were determined. Research on the use of mineral additives in anaerobic digestion is considered promising. Phosphogypsum favors the quality of digestate as an organic mineral fertilizer with a higher content of mineral components. Furthermore, the contribution of phosphogypsum to plant substrate to achieve higher biogas production is not apparent, but with an impact on the component composition of biogas; however, there is an opportunity to consider the potential benefits of using the additive with another type of substrate waste for the anaerobic digestion process.

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Technologies for Environmental Safety Application of Digestate as Biofertilizer

Cited by 6 publications

References 30 publications

Agroecological Transformation in the Salt Composition of Soil under the Phosphogypsum Influence on Irrigated Lands in Ukraine

Agroecological Transformation in the Salt Composition of Soil under the Phosphogypsum Influence on Irrigated Lands in Ukraine

Digestate Potential to Substitute Mineral Fertilizers: Engineering Approaches

Effect of Phosphogypsum Addition on Methane Yield in Biogas and Digestate Properties During Anaerobic Digestion

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