Assessing the carbon footprint and environmental impact of bone hydrochar for arsenic remediation : A life cycle approach to hydrothermal waste recycling

Copyright © 2025 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 206(2025) vom: 16. Sept., Seite 115054
1. Verfasser: Biswas, Partha Pratim (VerfasserIn)
Weitere Verfasser: Chen, Wei-Hsin, Chang, Jo-Shu, Nguyen, Thanh-Binh, Culaba, Alvin B
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Arsenic sorption Biochar Bone hydrochar and bone char Life cycle assessment Torrefaction and pyrolysis Wastewater treatment Arsenic N712M78A8G Charcoal mehr... 16291-96-6 biochar bone meal TRS31EO6ZN Minerals Biological Products
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520 |a This study investigates the development of bone hydrochar via hydrothermal carbonization (HTC) and its potential for arsenic removal, with a comparative sustainability assessment against biochar and bone char. Bone hydrochar was synthesized at 180 °C using a 1:10 water-to-bone meal ratio for 1 and 2 h. Characterization revealed a decrease in CO32- content from 15 % to 8 % with increased HTC duration. The arsenic sorption capacity of bone hydrochar reached 3.5 mg∙g-1, surpassing that of torrefied and pyrolyzed bone char but remaining lower than engineered biochar. Artificial neural network (ANN) modeling highlighted the importance of applying Leave-One-Out Cross-Validation (LOOCV) to ensure robust evaluation and minimize overfitting risks under limited-data conditions. Life cycle assessment (LCA) indicated that hydrochar production exhibited a higher global warming potential (GWP) than biochar, with values of 9.93 kg CO2 eq for rice husk hydrochar and 9.85 kg CO2 eq for bone hydrochar, compared to 0.696 kg CO2 eq for rice biochar and 0.679 kg CO2 eq for bone char. Bone meal production emits only 0.027 kg CO2 eq, while rice husk production generates significantly higher emissions, at 0.107 kg CO2 eq. Conventional torrefaction consumes 0.75-0.83 kWh of energy, while hydrochar production requires significantly more energy, at 9.7 kWh. These findings highlight the trade-offs between arsenic sorption efficiency and environmental sustainability, informing the optimal selection of biochar and hydrochar for water treatment applications 
650 4 |a Journal Article 
650 4 |a Arsenic sorption 
650 4 |a Biochar 
650 4 |a Bone hydrochar and bone char 
650 4 |a Life cycle assessment 
650 4 |a Torrefaction and pyrolysis 
650 4 |a Wastewater treatment 
650 7 |a Arsenic  |2 NLM 
650 7 |a N712M78A8G  |2 NLM 
650 7 |a Charcoal  |2 NLM 
650 7 |a 16291-96-6  |2 NLM 
650 7 |a biochar  |2 NLM 
650 7 |a bone meal  |2 NLM 
650 7 |a TRS31EO6ZN  |2 NLM 
650 7 |a Minerals  |2 NLM 
650 7 |a Biological Products  |2 NLM 
700 1 |a Chen, Wei-Hsin  |e verfasserin  |4 aut 
700 1 |a Chang, Jo-Shu  |e verfasserin  |4 aut 
700 1 |a Nguyen, Thanh-Binh  |e verfasserin  |4 aut 
700 1 |a Culaba, Alvin B  |e verfasserin  |4 aut 
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773 1 8 |g volume:206  |g year:2025  |g day:16  |g month:09  |g pages:115054 
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