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Title | Synergetic effect of digestate dissolved organic matter and phosphogypsum properties on heavy metals immobilization in soils |
Authors |
Skvortsova, Polina Oleksiivna
![]() Ablieieva, Iryna Yuriivna ![]() Tonderski, K. Chernysh, Yelyzaveta Yuriivna ![]() Pliatsuk, Leonid Dmytrovych ![]() Sipko, Iryna Oleksandrivna ![]() Mykhno, H.I. |
ORCID |
http://orcid.org/0000-0002-7515-4245 http://orcid.org/0000-0002-2333-0024 http://orcid.org/0000-0003-4103-4306 http://orcid.org/0000-0003-0095-5846 http://orcid.org/0000-0001-9667-4795 |
Keywords |
anaerobic digestion chemical pollution ecological risk fertilizer soil degradation soil restoration |
Type | Article |
Date of Issue | 2024 |
URI | https://essuir.sumdu.edu.ua/handle/123456789/94960 |
Publisher | Sumy State University |
License | Creative Commons Attribution - NonCommercial 4.0 International |
Citation | Skvortsova P. O., Ablieieva I. Yu., Tonderski K., Chernysh Ye. Yu., Plyatsuk L. D., Sipko I. O., Mykhno H. I. (2024). Synergetic effect of digestate dissolved organic matter and phosphogypsum properties on heavy metals immobilization in soils. Journal of Engineering Sciences (Ukraine), Vol. 11(1), pp. H9–H20. https://doi.org/10.21272/jes.2024.11(1).h2 |
Abstract |
The main idea was to justify the natural, technological, and ecological aspects of digestate-based
composite for heavy metals (HMs) binding in soil due to organic matter content and mineral additives’ biosorption
properties. The study aimed to determine the potential of a composite made from digestate and phosphogypsum for
remediation of HMs polluted soils and the role of dissolved organic matter (DOM) in binding HMs. Methods used
included a literature review to identify the mechanisms for HM binding to digestate DOM, a laboratory setup for
producing a digestate-based composite with digestate (from manure or sewage sludge) mixed with phosphogypsum,
and an analysis of digestate fluorescence properties. Results show that a composite based on digestate from manure as
feedstock had a higher fluorescence complexity index than a composite with sewage sludge digestate (2.2 and 1.71,
respectively). However, the DOM stability in the sewage sludge digestate composite was higher than reported in the
literature, probably due to the mineral composition of phosphogypsum, which resulted in a high HMs sorption capacity
and its positive effect on soil microbial activity. Based on the theoretical substantiation of DOM content and its binding
properties, manure was the most effective feedstock type out of the two tested if digestate was used for HM remediation.
Using a digestate-based composite with phosphogypsum can potentially reduce the ecological risk levels imposed by
HM-contaminated soils from considerably too low. |
Appears in Collections: |
Journal of Engineering Sciences / Журнал інженерних наук |
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