Integrated Thermal Conversion and Anaerobic Digestion for Sludge Management in Wastewater Treatment Plants

Dussan, Karla; Monaghan, Rory F.D.

doi:10.1007/s12649-016-9812-x

Cited by 20 publications

(6 citation statements)

References 37 publications

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“…No statistically significant changes in the percentage of elements (CHN) in SSC before and after the incubation test were found. Similar results to the current study were obtained by Dussan and Monaghan [45] in typical ultimate composition analysis of SSC: C 36.5%, H 5.2%, N 5%, S 1.5%. In the current study the S content in the SSC (Nos.…”

Section: Elementary and Toc Analysissupporting

confidence: 92%

Assessment of Composition Changes, Stability Degree and the Potential of Biogas Formation of Sewage Sludge Composts During Maturation Process

Bożym

Siemiątkowski

2019

Waste Biomass Valor

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The aim of this study was to assess the degree of stabilization of composted sewage sludge (SSC) during maturation using tests in aerobic and anaerobic conditions, determining the potential for biogas formation and its composition, as well as changes of mobile and bioavailable forms of metals in SSC after treatment. The samples were taken in the second phase of composting, during the maturation process. The biological stability of SSC samples was determined by detecting an incubation test (GS 21 ) and respiration index (AT 4 ). The potential for biogas formation and composition changes of SSC during maturation were analyzed. It was found that the chemical composition of the tested samples depended on the degree of their maturity. It was found that the both tested methods (AT 4 , GS 21 ) of assessing the stability of waste are sufficient. Treatment under anaerobic conditions did not significantly change the composition of the samples, with the exception of total organic carbon (TOC). A high percentage of methane in biogas for samples at the beginning of the maturation process indicates a high content of biodegradable organic matter in SSC. In addition, the decrease of mobile and bioavailable forms of heavy metals percentage, during the SSC maturation, was found. In order to confirm the results of current study, a long-term field studies should be carried out on the effects of SSCs tested on soils and plants. Graphic AbstractKeywords Sewage sludge compost (SSC) · Maturity · Incubation test (GS 21 ) · Respiration index (AT 4 ) · Biogas potential · Heavy metals * Marta Bożym

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Section: Elementary and Toc Analysissupporting

confidence: 92%

Assessment of Composition Changes, Stability Degree and the Potential of Biogas Formation of Sewage Sludge Composts During Maturation Process

Bożym

Siemiątkowski

2019

Waste Biomass Valor

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“…Moreover, this technique appears to be less contaminant than combustion, since most of the hazardous trace elements are partially retained in the char (Folgueras et al 2013). The combination of anaerobic digestion followed by thermal valorisation processes could be an alternative for achieving higher energy efficiency to that from a single anaerobic digestion treatment (Dussan and Monaghan 2018); especially when poor quality effluents, with high volatile fatty acids (VFA) content, are obtained from the digestion process. The co-digestion of different wastes has traditionally been used for improving digester performance via increased biogas production.…”

Section: Introductionmentioning

confidence: 99%

Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes

González-Arias

Gil

Fernández

et al. 2020

Environ Sci Pollut Res

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“…The integration of different units would allow a complete valorization of resources. This may be the case of integrating digestion and thermal processes, which recently has been subject to extensive research [144][145][146] since the thermal valorization of digested material increases the recovery of energy and valuable products [147,148]. Char obtained from pyrolysis may serve as an adsorbent agent in biogas upgrading [149,150], thus reducing operational costs.…”

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confidence: 99%

Biogas Production from Organic Wastes: Integrating Concepts of Circular Economy

Ellacuriaga

García-Cascallana

Gómez

2021

Fuels

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Anaerobic digestion is traditionally used for treating organic materials. This allows the valorization of biogas and recycling of nutrients thanks to the land application of digestates. However, although this technology offers a multitude of advantages, it is still far from playing a relevant role in the energy market and from having significant participation in decarbonizing the economy. Biogas can be submitted to upgrading processes to reach methane content close to that of natural gas and therefore be compatible with many of its industrial applications. However, the high installation and operating costs of these treatment plants are the main constraints for the application of this technology in many countries. There is an urgent need of increasing reactor productivity, biogas yields, and operating at greater throughput without compromising digestion stability. Working at organic solid contents greater than 20% and enhancing hydrolysis and biogas yields to allow retention times to be around 15 days would lead to a significant decrease in reactor volume and therefore in initial capital investments. Anaerobic digestion should be considered as one of the key components in a new economy model characterized by an increase in the degree of circularity. The present manuscript reviews the digestion process analyzing the main parameters associated with digestion performance. The novelty of this manuscript is based on the link established between operating reactor conditions, optimizing treatment capacity, and reducing operating costs that would lead to unlocking the potential of biogas to promote bioenergy production, sustainable agronomic practices, and the integration of this technology into the energy grid.

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Integrated Thermal Conversion and Anaerobic Digestion for Sludge Management in Wastewater Treatment Plants

Cited by 20 publications

References 37 publications

Assessment of Composition Changes, Stability Degree and the Potential of Biogas Formation of Sewage Sludge Composts During Maturation Process

Assessment of Composition Changes, Stability Degree and the Potential of Biogas Formation of Sewage Sludge Composts During Maturation Process

Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes

Biogas Production from Organic Wastes: Integrating Concepts of Circular Economy

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