A two-step process for energy-efficient conversion of food waste via supercritical water gasification: Process design, products analysis, and electricity evaluation

Liu, Jianyong; Wang, Defeng; Yu, Caimeng; Jiang, Jiahao; Guo, Meng; Hantoko, Dwi

doi:10.1016/j.scitotenv.2020.142331

Cited by 29 publications

(8 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, for comparative purposes on the ternary chart, other types of fuels were included, collected from [39], to visualize the composition of proximate components in other types of fuels. Component dispersion was compared to conventional fuels-Spanish Alcorisa lignite [40], Polish bituminous coal [41], Australian bituminous coal [42], Chilean sub-bituminous coal [40]; biomass fuels-waste wood [43], sawdust [43], pinewood [44]; and waste fuels-mixed food waste [45], solid recovered fuel [46] and mixed plastic waste [47]. statistical analysis, it is possible to group species according to proximate content, but it should be noted that only three varieties stand out from the rest-these are characterized by especially high (Perennial Ryegrass var.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Determination of Energy Parameters and Their Variability between Varieties of Fodder and Turf Grasses

et al. 2022

View full text Add to dashboard Cite

Due to the need to diversify energy sources and transform the energy system and its decarbonization, new paths for obtaining raw materials are being sought. One of the potential options is to increase the use of grasses’ share in bioenergy production, which has a significant area potential. However, the diversified chemical composition of grasses and their anatomical heterogeneity mean that, between the various cultivars and species, the parameters determining their energetic usefulness may differ significantly, hence the key is to know the appropriate parameters at the variety level of a given species in order to effectively carry out the combustion process. In this experiment, a total of 23 varieties of seven grass species (Kentucky bluegrass (Poa pratensis L.), Red Fescue (Festuca rubra L.), Perennial Ryegrass (Lolium perenne L.), Meadow Fescue (Festuca pratensis Huds.), Timothy (Phleum pratense L.), Common Bent (Agrostis capillaris L.), Sheep Fescue (Festuca ovina L.), which had not yet been evaluated in terms of energy utilization, were tested. Proximate analysis showed the average ash content was in the range of 5.73–8.31%, the content of volatile matter in the range of 70.99–82.29% and the content of fixed carbon in the range of 5.96–17.19%. Higher heating value and lower heating value of grasses ranged from 16,548 kJ∙kg−1–18,616 kJ∙kg−1, 15,428 kJ∙kg−1–17453 kJ∙kg−1, respectively. The Sheep Fescue turned out to be the most useful species for combustion. It has been shown that there may be statistically significant differences in the parameters determining their combustion suitability between the various varieties of a given species of grass. Therefore the major finding of this work shows that it is necessary to need to know theparameters of a given variety is necessary to optimize the combustion process and maintain the full energy efficiency of the system (especially lower heating value).

show abstract

Section: Resultsmentioning

confidence: 99%

“…Figure 4. Ternary diagram for components of proximate analysis parameters for the analyzed varieties and species of grasses and other solid fuels (based on[39][40][41][42][43][44][45][46][47]). …”

mentioning

confidence: 99%

Determination of Energy Parameters and Their Variability between Varieties of Fodder and Turf Grasses

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Reactors must be made of materials able to withstand the high-temperature and high-pressure conditions and to be corrosive resistant. The materials used for SCW systems' reactors are most commonly stainless steel [61][62][63][64][65][66][67][68], Inconel [69], or Hastelloy [70]. At lab scale, for batch SCW systems, quartz bas also been used as a reactor material [71][72][73][74].…”

Section: Supercritical Water Processes Relevant For Waste Treatmentmentioning

confidence: 99%

“…It was demonstrated that energy yield can reach 85% if the energy is recovered from hot water at 300 bar and 873 K, while assuming the ideal scenario of no external heat loss [78]. Energy savings of about 15.58% were achieved when gasification of food waste was performed by a two-step heating process, initiated by a hydrothermal pretreatment for a short time, followed by the SCWG reaction [70].…”

Section: Supercritical Water Gasificationmentioning

confidence: 99%

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

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

“…9 Since the early 90s, researchers have been embarking on research and development of thermochemical conversion processes that will play a critical role in alleviating the energy supply deciency. The novelty in these processes is that different material feedstocks, commonly coal, [10][11][12] including waste products such as waste tyres, [12][13][14] biomass; [15][16][17] plastics; [18][19][20] food waste; [21][22][23] microalgae; 24 and animal manure 25 etc. can be employed to yield high-end nal products.…”

Section: Introductionmentioning

confidence: 99%

Developments in waste tyre thermochemical conversion processes: gasification, pyrolysis and liquefaction

et al. 2021

View full text Add to dashboard Cite

show abstract

A two-step process for energy-efficient conversion of food waste via supercritical water gasification: Process design, products analysis, and electricity evaluation

Cited by 29 publications

References 43 publications

Determination of Energy Parameters and Their Variability between Varieties of Fodder and Turf Grasses

Determination of Energy Parameters and Their Variability between Varieties of Fodder and Turf Grasses

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

Developments in waste tyre thermochemical conversion processes: gasification, pyrolysis and liquefaction

Contact Info

Product

Resources

About