Conversion of Sewage Sludge and Other Biodegradable Waste into High-Value Soil Amendment within a Circular Bioeconomy Perspective

Resource recovery from biodegradable waste is essential in order to reach the goals of zero circular economy waste generation and zero greenhouse gas emissions from the waste sector. Waste whose management is a real challenge is sewage sludge, mainly because of high concentrations of heavy metals. T...

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Autores principales:	Ewa Neczaj, Anna Grosser, Anna Grobelak, Piotr Celary, Bal Ram Singh
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	circular economy bioeconomy sewage sludge organic waste co-composting bioremediation Technology T
Acceso en línea:	https://doaj.org/article/7694a6a762e84981b78089db3f74a994
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spelling	oai:doaj.org-article:7694a6a762e84981b78089db3f74a9942021-11-11T15:46:42ZConversion of Sewage Sludge and Other Biodegradable Waste into High-Value Soil Amendment within a Circular Bioeconomy Perspective10.3390/en142169531996-1073https://doaj.org/article/7694a6a762e84981b78089db3f74a9942021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/6953https://doaj.org/toc/1996-1073Resource recovery from biodegradable waste is essential in order to reach the goals of zero circular economy waste generation and zero greenhouse gas emissions from the waste sector. Waste whose management is a real challenge is sewage sludge, mainly because of high concentrations of heavy metals. The aim of this study was to compare the effectiveness of material stabilization during aerobic stabilization of two feedstocks with sewage sludge obtained from different sources, namely, digestate from a municipal wastewater treatment plant and digestate from a co-digestion process. Moreover, the goal of the experiment was to assess the quality of compost in terms of remediation potential. The composting process was carried out for four different mixtures consisting of the mentioned digestates, municipal solid waste, and grass. A better composting efficiency with digestate from the co-digestion process was observed. In that case, a higher temperature in the thermophilic phase (>55 °C) and a higher organic matter loss ratio (60%) were obtained as compared to the process with digestate from wastewater treatment plant. Taking into account the fertilizing properties and the concentration of heavy metals, all obtained composts met the requirements set out in the Polish Regulation for organic fertilizers. Only the content of Helminth eggs in the composts produced with the digestate from the wastewater treatment plant was above the acceptable level. The research also proved that the produced composts can be used in the phytoremediation process of the degraded area. It was found that all composts caused a significant increase in fescue biomass. The highest yield was achieved for compost produced from a mixture with the addition of 30% sewage sludge from the co-digestion process.Ewa NeczajAnna GrosserAnna GrobelakPiotr CelaryBal Ram SinghMDPI AGarticlecircular economybioeconomysewage sludgeorganic wasteco-compostingbioremediationTechnologyTENEnergies, Vol 14, Iss 6953, p 6953 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	circular economy bioeconomy sewage sludge organic waste co-composting bioremediation Technology T
spellingShingle	circular economy bioeconomy sewage sludge organic waste co-composting bioremediation Technology T Ewa Neczaj Anna Grosser Anna Grobelak Piotr Celary Bal Ram Singh Conversion of Sewage Sludge and Other Biodegradable Waste into High-Value Soil Amendment within a Circular Bioeconomy Perspective
description	Resource recovery from biodegradable waste is essential in order to reach the goals of zero circular economy waste generation and zero greenhouse gas emissions from the waste sector. Waste whose management is a real challenge is sewage sludge, mainly because of high concentrations of heavy metals. The aim of this study was to compare the effectiveness of material stabilization during aerobic stabilization of two feedstocks with sewage sludge obtained from different sources, namely, digestate from a municipal wastewater treatment plant and digestate from a co-digestion process. Moreover, the goal of the experiment was to assess the quality of compost in terms of remediation potential. The composting process was carried out for four different mixtures consisting of the mentioned digestates, municipal solid waste, and grass. A better composting efficiency with digestate from the co-digestion process was observed. In that case, a higher temperature in the thermophilic phase (>55 °C) and a higher organic matter loss ratio (60%) were obtained as compared to the process with digestate from wastewater treatment plant. Taking into account the fertilizing properties and the concentration of heavy metals, all obtained composts met the requirements set out in the Polish Regulation for organic fertilizers. Only the content of Helminth eggs in the composts produced with the digestate from the wastewater treatment plant was above the acceptable level. The research also proved that the produced composts can be used in the phytoremediation process of the degraded area. It was found that all composts caused a significant increase in fescue biomass. The highest yield was achieved for compost produced from a mixture with the addition of 30% sewage sludge from the co-digestion process.
format	article
author	Ewa Neczaj Anna Grosser Anna Grobelak Piotr Celary Bal Ram Singh
author_facet	Ewa Neczaj Anna Grosser Anna Grobelak Piotr Celary Bal Ram Singh
author_sort	Ewa Neczaj
title	Conversion of Sewage Sludge and Other Biodegradable Waste into High-Value Soil Amendment within a Circular Bioeconomy Perspective
title_short	Conversion of Sewage Sludge and Other Biodegradable Waste into High-Value Soil Amendment within a Circular Bioeconomy Perspective
title_full	Conversion of Sewage Sludge and Other Biodegradable Waste into High-Value Soil Amendment within a Circular Bioeconomy Perspective
title_fullStr	Conversion of Sewage Sludge and Other Biodegradable Waste into High-Value Soil Amendment within a Circular Bioeconomy Perspective
title_full_unstemmed	Conversion of Sewage Sludge and Other Biodegradable Waste into High-Value Soil Amendment within a Circular Bioeconomy Perspective
title_sort	conversion of sewage sludge and other biodegradable waste into high-value soil amendment within a circular bioeconomy perspective
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7694a6a762e84981b78089db3f74a994
work_keys_str_mv	AT ewaneczaj conversionofsewagesludgeandotherbiodegradablewasteintohighvaluesoilamendmentwithinacircularbioeconomyperspective AT annagrosser conversionofsewagesludgeandotherbiodegradablewasteintohighvaluesoilamendmentwithinacircularbioeconomyperspective AT annagrobelak conversionofsewagesludgeandotherbiodegradablewasteintohighvaluesoilamendmentwithinacircularbioeconomyperspective AT piotrcelary conversionofsewagesludgeandotherbiodegradablewasteintohighvaluesoilamendmentwithinacircularbioeconomyperspective AT balramsingh conversionofsewagesludgeandotherbiodegradablewasteintohighvaluesoilamendmentwithinacircularbioeconomyperspective
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Conversion of Sewage Sludge and Other Biodegradable Waste into High-Value Soil Amendment within a Circular Bioeconomy Perspective

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