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    Hydrochar Nanocatalyst for Emerging Pollutant Remediation, Sustainable Development, and Circular Economy

    Source: Journal of Hazardous, Toxic, and Radioactive Waste:;2025:;Volume ( 029 ):;issue: 001::page 04024029-1
    Author:
    Shraddha Yadav
    ,
    Monali Priyadarshini
    ,
    Azhan Ahmad
    ,
    Makarand M. Ghangrekar
    ,
    Brajesh K. Dubey
    DOI: 10.1061/JHTRBP.HZENG-1357
    Publisher: American Society of Civil Engineers
    Abstract: Hydrochar (HC), a carbon (C)-rich solid material produced using a hydrothermal technique at relatively low temperatures and pressures, has gained little attention regarding its use as a nanocatalyst in multiple wastewater treatment technologies. These HC-based nanocatalysts, catalyst support materials, and nano-adsorbents have the advantage of being cost-effective and chemically stable, having a porous structure, semiconductive properties, and oxygen (O)-rich surface functionality. Laboratory-scale trials that have successfully used HC catalysts to accelerate the kinetics of advanced oxidation processes (AOPs) (photocatalysis, electrochemical oxidation, Fenton catalysis) are here reviewed in depth, with a special focus on the mechanisms involved. The potential of HC catalysts in energy and valuables recovery using anaerobic digestion, bioelectrochemical systems, metal air batteries, transesterification, isomerization, and reforming processes are highlighted. In addition, the synthesis of HC from waste biomass (a zero-cost C precursor) would reduce the cost of expensive electrocatalysts, reduce greenhouse gas (GHG) emissions, ensure C capture, offer a low-C economy with less of a C footprint, and enhance environmental sustainability. This review provides a unique and comprehensive sustainability related perspective on HC and HC-based nanocatalysts that can be used to positively impact the United Nations’ Sustainable Development Goals (SDGs), especially SDGs 3, 6, 7, 11, and 13. Finally, a circular economy approach that includes HC and HC catalyst use in wastewater treatment and waste management systems is discussed, along with future perspectives and challenges.
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      Hydrochar Nanocatalyst for Emerging Pollutant Remediation, Sustainable Development, and Circular Economy

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4304723
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    • Journal of Hazardous, Toxic, and Radioactive Waste

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    contributor authorShraddha Yadav
    contributor authorMonali Priyadarshini
    contributor authorAzhan Ahmad
    contributor authorMakarand M. Ghangrekar
    contributor authorBrajesh K. Dubey
    date accessioned2025-04-20T10:26:23Z
    date available2025-04-20T10:26:23Z
    date copyright9/12/2024 12:00:00 AM
    date issued2025
    identifier otherJHTRBP.HZENG-1357.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4304723
    description abstractHydrochar (HC), a carbon (C)-rich solid material produced using a hydrothermal technique at relatively low temperatures and pressures, has gained little attention regarding its use as a nanocatalyst in multiple wastewater treatment technologies. These HC-based nanocatalysts, catalyst support materials, and nano-adsorbents have the advantage of being cost-effective and chemically stable, having a porous structure, semiconductive properties, and oxygen (O)-rich surface functionality. Laboratory-scale trials that have successfully used HC catalysts to accelerate the kinetics of advanced oxidation processes (AOPs) (photocatalysis, electrochemical oxidation, Fenton catalysis) are here reviewed in depth, with a special focus on the mechanisms involved. The potential of HC catalysts in energy and valuables recovery using anaerobic digestion, bioelectrochemical systems, metal air batteries, transesterification, isomerization, and reforming processes are highlighted. In addition, the synthesis of HC from waste biomass (a zero-cost C precursor) would reduce the cost of expensive electrocatalysts, reduce greenhouse gas (GHG) emissions, ensure C capture, offer a low-C economy with less of a C footprint, and enhance environmental sustainability. This review provides a unique and comprehensive sustainability related perspective on HC and HC-based nanocatalysts that can be used to positively impact the United Nations’ Sustainable Development Goals (SDGs), especially SDGs 3, 6, 7, 11, and 13. Finally, a circular economy approach that includes HC and HC catalyst use in wastewater treatment and waste management systems is discussed, along with future perspectives and challenges.
    publisherAmerican Society of Civil Engineers
    titleHydrochar Nanocatalyst for Emerging Pollutant Remediation, Sustainable Development, and Circular Economy
    typeJournal Article
    journal volume29
    journal issue1
    journal titleJournal of Hazardous, Toxic, and Radioactive Waste
    identifier doi10.1061/JHTRBP.HZENG-1357
    journal fristpage04024029-1
    journal lastpage04024029-18
    page18
    treeJournal of Hazardous, Toxic, and Radioactive Waste:;2025:;Volume ( 029 ):;issue: 001
    contenttypeFulltext
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