Assessment of carbon recovery from solid organic wastes by supercritical water oxidation for a regenerative life support system

Zhang, Dongdong; Luther, Amanda; Clauwaert, Peter; Ciccioli, P.; Ronsse, Frederik

doi:10.1007/s11356-019-07527-3

Cited by 6 publications

(5 citation statements)

References 39 publications

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“…The advantage of the flow systems over batch processing is the possibility to include engineered mixers for the water and feedstock streams. Comparative studies of waste SCWO experiments have revealed that continuous flow reactors outperform batch reactors in terms of treatment capacity, waste destruction efficiency and reproducibility [15,55].…”

Section: Supercritical Water Processes Relevant For Waste Treatmentmentioning

confidence: 99%

“…For the same issue of salts removal, an inclined plug-flow reactor was recently used for the SCWO process [55]. Microchannel reactors (coiled) are also used for SCWG experiments [83,84] and also for SCWO studies [15,54]. In the catalytic processes the catalyst is loaded in the reactor as fixed/packed [85] or fluidized bed [86].…”

Section: Supercritical Water Processes Relevant For Waste Treatmentmentioning

confidence: 99%

“…Oxygen is the most used oxidant agent in SCWO [90,92,[97][98][99][100][101], which is supplied to the system at various concentrations. Another oxidant used is H 2 O 2 [13,15,34,54,55,59,93,94,[102][103][104][105][106][107][108] which during the preheating decomposes and yield molecular oxygen [98,108].…”

Section: Supercritical Water Oxidationmentioning

confidence: 99%

“…A similar project is supported by the European Space Agency, under the name MELiSSA (Micro-Ecological Life Support System Alternative). The MELiSSA project aims to fully recycle all the solid organic wastes generated in space, such as human waste, food waste, and non-edible parts of plants, using supercritical water as the reaction medium [15].…”

Section: Introductionmentioning

confidence: 99%

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Functional Materials for Waste-to-Energy Processes in Supercritical Water

et al. 2021

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In response to increasing energy demand, various types of organic wastes, including industrial and municipal wastewaters, or biomass wastes, are considered reliable energy sources. Wastes are now treated in supercritical water (SCW) for non-fossil fuel production and energy recovery. Considering that SCW technologies are green and energetically effective, to implement them on a large scale is a worldwide interest. However, issues related to the stability and functionality of materials used in the harsh conditions of SCW reactors still need to be addressed. Here we present an overview on materials used in the SCW technologies for energy harvesting from wastes. There are catalysts based on metals or metal oxides, and we discuss on these materials’ efficiency and selectivity in SCW conditions. We focus on processes relevant to the waste-to-energy field, such as supercritical water gasification (SCWG) and supercritical water oxidation (SCWO). We discuss the results reported, mainly in the last decades in connection to the current concept of supercritical pseudo-boiling (PB), a phenomenon occurring at the phase change from liquid-like (LL) to gas-like (GL) state of a fluid. This review aims to be a useful database that provides guidelines for the selection of the abovementioned functional materials (catalysts, catalyst supports, and sorbents) for the SCW process, starting from wastes and ending with energy-relevant products.

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Section: Supercritical Water Processes Relevant For Waste Treatmentmentioning

confidence: 99%

Section: Supercritical Water Processes Relevant For Waste Treatmentmentioning

confidence: 99%

Section: Supercritical Water Oxidationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Functional Materials for Waste-to-Energy Processes in Supercritical Water

et al. 2021

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“…Within the environment of supercritical water, reactants (being both the organics as well as the oxidizer) appear in a homogeneous single phase, boosting oxidation reaction rates dramatically. SCWO can fit within a waste management strategy to decompose harmful and/or high-risk substances (e.g., medical wastes), or high-moisture waste streams (e.g., sewage sludge) (Marrone, 2013;Brunner, 2014;Zhang et al, 2018Zhang et al, , 2020.…”

Section: Introductionmentioning

confidence: 99%