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Hydrothermal carbon...
Hydrothermal carbonisation of peat-based spent sorbents loaded with metal(loid)s
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- Kasiuliene, Alfreda (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Carabante, Ivan (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Bhattacharya, Prosun, 1962- (författare)
- KTH,Hållbar utveckling, miljövetenskap och teknik,Department of Sustainable Development, Environmental Science and Engineering, Royal Institute of Technology, Stockholm
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- Kumpiene, Jurate (författare)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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(creator_code:org_t)
- 2019-06-16
- 2019
- Engelska.
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Ingår i: Environmental Science and Pollution Research. - : Springer. - 0944-1344 .- 1614-7499. ; 26:23, s. 23730-23738
- Relaterad länk:
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https://link.springe...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Hydrothermal carbonisation (HTC) is a wet and relatively low-temperature process where, under autogenous pressures, biomass undergoes a chain of reactions leading to the defragmentation of organic matter. As well as its other uses (e.g. for producing low-cost carbon-based nano-compounds), HTC is utilised for the treatment of wet wastes, such as manure and biosludge. This study aimed to determine if hydrothermal carbonisation is a feasible treatment method for spent sorbents that are highly enriched with arsenic, chromium, copper, and zinc. The chemical properties of hydrochar and process liquid were evaluated after HTC treatment, where peat-based spent sorbents were carbonised at 230 °C for 3 h. Analysis of Fourier transform-infrared spectra revealed that during HTC, the oxygenated bonds of ethers, esters, and carboxylic groups were cleaved, and low-molecular-weight organic fragments were dissolved in the process liquid. A large fraction of arsenic (up to 62%), copper (up to 25%), and zinc (up to 36%) were transferred from the solids into the process water. Leaching of these elements from the hydrochars increased significantly in comparison with the spent sorbents.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Annan naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Other Environmental Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering (hsv//eng)
Nyckelord
- Metals
- Adsorption
- Thermal treatment
- Iron-peat
- Post-sorption management
- HTC
- Avfallsteknik
- Waste Science and Technology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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