Effect of organic fraction of municipal solid waste addition to high rate activated sludge system for hydrogen production from carbon rich waste sludge

Tunay, Dogukan; Yildirim, Oznur; Özkaya, Bestami; Demi̇r, Ahmet

doi:10.1016/j.ijhydene.2022.04.299

Cited by 12 publications

(2 citation statements)

References 46 publications

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“…These production routes include thermochemical, electrolytic, and biological processes. However, some production methods are still under investigation [152,153]. Considering the technologies for converting waste and biomass into H 2 , the maturity level of the thermochemical pathways (gasification and pyrolysis) is aligned with TRL 7, whereas biological conversion is at TRL 4-5 and electrochemical conversion at TRL 2-4 [154].…”

Section: Alternative Technologiesmentioning

confidence: 99%

Hydrogen from Waste Gasification

Rauch,

Kiros,

Engvall

et al. 2024

Hydrogen

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Hydrogen is a versatile energy vector for a plethora of applications; nevertheless, its production from waste/residues is often overlooked. Gasification and subsequent conversion of the raw synthesis gas to hydrogen are an attractive alternative to produce renewable hydrogen. In this paper, recent developments in R&D on waste gasification (municipal solid waste, tires, plastic waste) are summarised, and an overview about suitable gasification processes is given. A literature survey indicated that a broad span of hydrogen relates to productivity depending on the feedstock, ranging from 15 to 300 g H2/kg of feedstock. Suitable gas treatment (upgrading and separation) is also covered, presenting both direct and indirect (chemical looping) concepts. Hydrogen production via gasification offers a high productivity potential. However, regulations, like frame conditions or subsidies, are necessary to bring the technology into the market.

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Section: Alternative Technologiesmentioning

confidence: 99%

Hydrogen from Waste Gasification

Rauch,

Kiros,

Engvall

et al. 2024

Hydrogen

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“…As a result, massive amounts of non-renewable natural resources are frequently utilized to build road infrastructure, including natural aggregates and bitumen derived from fossil fuels [ 2 ], which increases the cost of building and garners significant media attention about the environment and natural resources. In the meantime, the rate of global garbage creation is increasing, with annual production reaching over 1.5 billion tons [ 3 ]. The government faces tremendous challenges when it comes to handling, storing, and transporting waste [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

The Synergistic Effect of Polyphosphates Acid and Different Compounds of Waste Cooking Oil on Conventional and Rheological Properties of Modified Bitumen

Wang

et al. 2022

Materials

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In order to conserve non-renewable natural resources, waste cooking oil (WCO) in bitumen can help lower CO2 emissions and advance the environmental economy. In this study, three different components of WCO were isolated and then, together with polyphosphoric acid (PPA), used separately as bitumen modifiers to determine the suitability of various substances in WCO with PPA. Conventional tests, including penetration, softening point temperature, and ductility, and the dynamic shear rheology (DSR) test, including temperature sweep and frequency sweep, were used to evaluate the influence of WCO/PPA on the traditional performance and rheological properties at high and low temperatures. The results indicate that WCO reduced the ductility and penetration value, when the use of PPA increased the softening point temperature and high-temperature performance. Compared to reference bitumen, the rutting factor and viscous activation energy (Ea) of bitumen modified with 4% WCO and 2% PPA has the most significant increase by 18.6% and 31.5, respectively. All components of WCO have a significant impact on improving the low-temperature performance of PPA-modified bitumen. The performance of the composite-modified bitumen at low temperatures is negatively affected by some waxy compounds in WCO, such as methyl palmitate, which tends to undergo a solid–liquid phase change as the temperature decreases. In conclusion, the inclusion of WCO/PPA in bitumen offers a fresh approach to developing sustainable pavement materials.

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