Hydrothermal carbonization of sewage sludge coupled with anaerobic digestion: Integrated approach for sludge management and energy recycling

Gaur, Rubia Zahid; Khoury, Osama; Zohar, Matat; Poverenov, Elena; Darzi, Ran; Laor, Yael; Posmanik, Roy

doi:10.1016/j.enconman.2020.113353

Cited by 103 publications

(25 citation statements)

References 44 publications

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“…Some variations can be attributed to the use of solvents (e.g., methanol, ethanol, and acetone) and MS compositions (e.g., high ash content) (Huang et al, 2014;Li et al, 2012). Enhanced severity for HTC treatment could promote the decarboxylation process and improve hydrochar quality (e.g., HHV increase and O reduction), but the overall energy recovery of hydrochar may be decreased due to lower yields (Gaur et al, 2020). After a certain severity factor is reached at supercritical water conditions, the hydrochar yield remains around 10%.…”

Section: Process Parameters Governing Hydrocharmentioning

confidence: 99%

“…Consequently, the volume of remaining solids (hydrochar) for management could be significantly reduced. Many studies have suggested that HTC at mild conditions (e.g., 180-250 °C for < 1h) could compromise between energy consumption, dewaterability, hydrochar production, and methane production (92-356 mL CH 4 /g COD) from HTC aqueous (Ahmed et al, 2021a(Ahmed et al, , 2021bAragón-Briceño et al, 2017Ferrentino et al, 2020b;Gaur et al, 2020;Medina-Martos et al, 2020). Danso-Boateng et al (2015) found that Maillard reactions between monosaccharides and amino acids initiated at HTC of 180 °C for over 15 min, which could form non-biodegradable and/or AD inhibitors (e.g., aldehydes, furans, pyrroles, pyrazines, and pyridines) in the aqueous.…”

Section: ==========================mentioning

confidence: 99%

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Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

et al. 2021

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Section: Process Parameters Governing Hydrocharmentioning

confidence: 99%

Section: ==========================mentioning

confidence: 99%

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

et al. 2021

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“…The efficiency in energetic terms due to hydrothermal carbonization process (i.e., a process where the SS are processed in an aqueous medium of subcritical water) are dealt with in different studies, most of available works conducted investigated the energy recovery obtained from the treatment application in different part of the SS treatment. It was showed that energy efficiency significantly changes accordingly to the adopted treatments; in most cases, the choice depends on the quantity and typology of the SS to be treated [19][20][21][22]. Finally, Singh et al evaluated the potential for energy recovery by incineration and AD for India [23].…”

Section: Literature Review On Sludge-to-energy (Ste) Processesmentioning

confidence: 99%

Scenario Analysis for Selecting Sewage Sludge-to-Energy/Matter Recovery Processes

2021

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The sewage sludges are the byproducts of the wastewater treatment. The new perspective of the wastewater value chain points to a sustainable circular economy approach, where the residual solid material produced by sewage sludge treatments is a resource rather than a waste. A sewage sludge treatment system consists of five main phases; each of them can be performed by different alternative processes. Each process is characterized by its capability to recover energy and/or matter. In this paper, a state of the art of the sludge-to-energy and sludge-to-matter treatments is provided. Then, a scenario analysis is developed to identify suitable sewage sludge treatments plants that best fit the quality and flowrate of sewage sludge to be processed while meeting technological and economic constraints. Based on the scientific literature findings and experts’ opinions, the authors identify a set of reference initial scenarios and the corresponding best treatments’ selection for configuring sewage sludge treatment plants. The scenario analysis reveals a useful reference technical framework when circular economy goals are pursued. The results achieved in all scenarios ensure the potential recovery of matter and/or energy from sewage sludges processes.

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“…Combustion characteristics of hydrochar and BMP of LFHTC were calculated. Energy recovery rates of hydrochar and methane varied between 54-83%, depending on operation parameters (Gaur et al 2020).…”

Section: Gas Productionmentioning

confidence: 99%

A Review on Sewage Sludge Valorization via Hydrothermal Carbonization and Applications for Circular Economy

Cebi

Çeliktaş

Sarptaş

2021

Preprint

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In pursuit of establishing a circular economy, waste-to-energy approach is gaining increasing attention. In this manner valorization of sewage sludge constitutes a critical importance due to generation in high quantities, difficulties in disposal and associating environmental impacts. Hydrothermal carbonization (HTC) is a relatively recent, however acclaimed method for sewage sludge management and valorization due to process compliance with sludge characteristics. In this review, research studies are evaluated under the categorization of application fields of sludge derived HTC products such as solid fuel production, gas production, soil remediation, nutrient recovery, water treatment and energy storage. Research findings are compiled and a network mapping is employed for the visualization of the current situation and correlation in respective fields. The potential of HTC for sewage sludge valorization and future projections concerning available techniques are assessed within the context of circular economy.

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Hydrothermal carbonization of sewage sludge coupled with anaerobic digestion: Integrated approach for sludge management and energy recycling

Cited by 103 publications

References 44 publications

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

Hydrochar derived from municipal sludge through hydrothermal processing: A critical review on its formation, characterization, and valorization

Scenario Analysis for Selecting Sewage Sludge-to-Energy/Matter Recovery Processes

A Review on Sewage Sludge Valorization via Hydrothermal Carbonization and Applications for Circular Economy

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