Catalytic subcritical and supercritical water gasification as a resource recovery approach from waste tires for hydrogen-rich syngas production

Nanda, Sonil; Reddy, Sivamohan N.; Hunter, Howard N.; Vo, Dai‐Viet N.; Koziński, Janusz A.; Gökalp, İskender

doi:10.1016/j.supflu.2019.104627

Cited by 48 publications

(21 citation statements)

References 103 publications

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“…After 60 min of reaction time at 230 bar, the highest total gas yield was obtained when waste cooking oil was gasified over Ni/Si-Al 2 O 3 at 948 K [123]. Ni on SiO 2 -Al 2 O 3 support also exhibited catalytic activity for the SCWG of waste tires at 898 K, with a carbon gasification efficiency as high as 43.4% [66]. Nearly complete conversion of glycerol (a waste compound from biofuel production) to an H 2 -rich gas was achieved when commercial Ni/Al 2 O 3 -SiO 2 , was used in the SCW reforming process [23].…”

Section: Metal-based Catalysts For Scwgmentioning

confidence: 97%

“…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%

“…Ni-based materials [66,115,116], noble metals [50,117], and some bimetallic catalysts [112,118,119] have been tested for the gasification of various sources of real waste, such as pinewood [111,120] and straw [68,121] biomass, food waste [122], waste cooking oil [123], waste tires [66], and sugarcane bagasse [50]. Table 1 presents a selection of results obtained from the waste gasification experiments under various SCW conditions reported in studies, mostly in recent years.…”

Section: Metal-based Catalysts For Scwgmentioning

confidence: 99%

“…Ru on an Al 2 O 3 support demonstrated catalytic activity in the SCWG of wheat straw biomass [121], Canadian Athabasca bitumen [125], waste tires [66], and waste cooking oil [123] at 823 K, 973 K, 898 K, and 948 K, respectively. The selectivity towards the reactions with H 2 as gas product varied from almost 30%, in the case of straw feed [121], to the 90% achieved when waste cooking oil was the source [123].…”

Section: Metal-based Catalysts For Scwgmentioning

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: Metal-based Catalysts For Scwgmentioning

confidence: 97%

Section: Supercritical Water Processes Relevant For Waste Treatmentmentioning

confidence: 99%

Section: Metal-based Catalysts For Scwgmentioning

confidence: 99%

Section: Metal-based Catalysts For Scwgmentioning

confidence: 99%

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

et al. 2021

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“…To produce H 2 rich syngas from tires waste, supercritical water gasification was used by Nanda et al [137] The tire waste supercritical water gasification with a weight percent feed concentration produced a maximum syngas of 34 mmol g À 1 at 625°C in 60 min. The H 2 production was 14.4 mmol g À 1 under such ideal conditions.…”

Section: Plastic As a Fuel For Energy Productionmentioning

confidence: 99%

Utilization of Plastic Wastes for Sustainable Environmental Management: A Review

et al. 2021

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The advancement and modernization of industries have provided numerous benefits to human life including diversification of manufacturing a wide range of products made from plastic materials, thereby leading to the generation of huge quantities of plastic waste. Owing to the increasing issues related with plastic waste, recycling methods have attracted much interest. Recycling not only protects the environment and resources for future generations but also reduces energy consumption and greenhouse gas emissions. A wide range of valuable products including char, oil, fuels, sorbent materials, and chemicals can be obtained through different techniques. This Review highlights various sustainable research avenues and potential routes to reduce the environmental impact of plastic waste based on both traditional and potential approaches for its utilization.

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