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Hydrochars as a bio-based adsorbent for heavy metals removal: A review of production processes, adsorption mechanisms, kinetic models, regeneration and reusability of hydrochar
Abstract
The spread of heavy metals throughout the ecosystem has extremely endangered human health, animals, plants, and natural resources. Hydrochar has emerged as a promising adsorbent for removing heavy metals from water and wastewater. Hydrochar, obtained from hydrothermal carbonization of biomass, owns unique physical and chemical properties that are highly potent in capturing heavy metals via surface complexation, electrostatic interactions, and ion exchange mechanisms. This review focuses on removing heavy metals by hydrochar adsorbents from water bodies. The article discusses factors affecting the adsorption capacity of hydrochars, such as contact time, pH, initial metal concentration, temperature, and competing ions. Literature on optimization approaches such as surface modification, composite development, and hybrid systems are reviewed to enlighten mechanisms undertaking the efficiency of hydrochars in heavy metals removal from wastewater. The review also addresses challenges such as hydrochar regeneration and reusability, alongside potential issues related to its disposal and metal leaching. Integration with current water purification methods and the significance of ongoing research and initiatives promoting hydrochar-based technologies were also outlined. The article concludes that combining hydrochar with modern technologies such as nanotechnology and advanced oxidation techniques holds promise for improving heavy metal remediation. Overall, this comprehensive analysis provides valuable insights to guide future studies and foster the development of effective, affordable, and environmentally friendly heavy metal removal technologies to ensure the attainment of safer drinking water for communities worldwide.
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Authors (12)
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Tonni Agustiono Kurniawan
- College of Environment and Ecology, Xiamen University, Xiamen 361102, Fujian Province, China
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Grzegorz Piechota
- GPCHEM, Laboratory of Biogas Research and Analysis, ul. Legionów 40a/3, 87–100 Toruń, Poland
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Gopalakrishnan Kumar
- Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600 Forus 4036, Stavanger, Norway
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Peyman Ezzati
- ERA Co., Ltd, Science and Technology Center, P.O. Box: 318020, Taizhou, Zhejiang, China
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Mohammad Saeb
- Department of Pharmaceutical Chemistry, Medical University of Gdańsk, J. Hallera 107, 80-416 Gdańsk, Poland
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Navid Rabiee
- Department of Biomaterials, Saveetha Dental College and Hospitals, SIMATS, Saveetha University, Chennai 600077, India
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Hassan Karimi-Maleh
- School of Resources and Environment, University of Electronic Science and Technology of China, P.O. Box 611731, Xiyuan Ave, Chengdu, China
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Eder C. Lima
- Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
SCIENCE OF THE TOTAL ENVIRONMENT
no. 945,
ISSN: 0048-9697 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Khanzada A., Al-Hazmi H., Kurniawan T. A., Majtacz J., Piechota G., Kumar G., Ezzati P., Saeb M., Rabiee N., Karimi-Maleh H., Lima E. C., Mąkinia J.: Hydrochars as a bio-based adsorbent for heavy metals removal: A review of production processes, adsorption mechanisms, kinetic models, regeneration and reusability of hydrochar// SCIENCE OF THE TOTAL ENVIRONMENT -Vol. 945, (2024), s.173972-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.scitotenv.2024.173972
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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