From biomass to humic acid: Is there an accelerated way to go?

Shao, Yuchao; Bao, Menggang; Huo, Weizhong; Ye, Rong; Ajmal, Muhammad; Lu, Wenjing

doi:10.1016/j.cej.2022.139172

Cited by 37 publications

(13 citation statements)

References 42 publications

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“…A significant signal located at 54 ppm can be assigned to the methoxy group, and the two peaks within the aromatic carbon region at 130 ppm and 144 ppm are attributed to the aromatic and unsaturated carbon, phenols and heterocyclic aromatic hydrocarbons, respectively. 21 These results revealed that lignin is the dominant aromatic structure in the A-HA spectrum, consistent with the results from the FT ICR-MS analysis. With the increase in the hydrothermal treatment time, the peak at 54 ppm gradually weakened, while the peak at 144 ppm gradually increased, suggesting that lignin was continuously involved in the polymerization reaction to form A-HA with a higher aromaticity.…”

Section: Resultssupporting

confidence: 88%

Hydrothermal humification mechanism of typical agricultural waste biomass: a case study of corn straw

et al. 2023

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Section: Resultssupporting

confidence: 88%

Hydrothermal humification mechanism of typical agricultural waste biomass: a case study of corn straw

et al. 2023

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“…In addition, after being treated by KOH alone (Fig. 1c), the fluorescence intensities in regions II and IV decreased along with the appearance of slight fluorescence in region V, probably due to base-catalyzed hydrolysis and humification 29 . Notably, the fluorescence further moved towards region III (FLA) and V (HLA) after the simultaneous addition of PS and KOH (Fig.…”

Section: Resultsmentioning

confidence: 95%

Radical-induced rapid humification of waste milk and the performance of derived slow release fulvic-like fertilizer

Zhu

Cao

Wang

et al. 2023

Preprint

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The direct disposal of waste milk (WM) leads to severe environmental pollution and resource loss. Considering the high content of nutrients, WM has a potential as an ideal raw material for organic fertilizer. In this work, base-activated persulfate (KOH/PS) was used as a new artificial humification technology to transform WM into product with 45.3% of fulvic-like acid (FLA) and 18.9% of humic-like acid (HLA) in 1 hour. Therein, FLA had more active groups (-COOH, -CNOH, -OH) than natural fulvic acid likely owing to hydroxylation, carboxylation and the Millard reaction. Reactive species of •OH and SO4−• generated in KOH/PS system may be related to degradation or polymerization reactions during humification. The product was mixed with attapulgite to fabricate a slow-release nano FLA fertilizer which could increase the yield of chickweeds by 107% compared with the blank as well as the abundance of beneficial bacteria in soil. Overall, this study provided a rapid method for the recycling of waste food and highly-concentrated organic wastewater, which may have a huge application prospect in sustainable agriculture.

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“…The high pressure and temperature conditions promote the hydrolysis and decomposition of complex organic molecules, leading to the formation of simpler compounds. These compounds, such as sugars, amino acids, and fatty acids, undergo further reactions, including condensation and polymerization, ultimately resulting in the formation of HS . The hydrothermal reaction process can be optimized by controlling parameters such as temperature, pressure, reaction time, and solid-liquid ratio.…”

Section: Transformation Of Organic Waste Into Hsmentioning

confidence: 99%

“…This process facilitates the decomposition and conversion of organic compounds, resulting in the formation of polymeric HS. 102 During hydrothermal treatment, organic solid waste is immersed in a pressurized reactor and heated above the boiling point of water. The high pressure and temperature conditions promote the hydrolysis and decomposition of complex organic molecules, leading to the formation of simpler compounds.…”

Section: Conversion Processes and Technologiesmentioning

confidence: 99%

Transforming Organic Solid Waste Management: Embracing Humification for Sustainable Resource Recovery

Bian,

Boguta,

Huang

et al. 2024

ACS Sustainable Resour. Manage.

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The paper provides an overview of the potential use of humic substances (HS) derived from organic waste in transforming waste management practices. It discusses various types of organic waste, the production methods of HS, and their applications in agriculture, environmental remediation, and industry. The Perspective emphasizes the transformative potential of HS in reshaping organic waste management practices, highlighting improved soil fertility, mitigation of soil degradation, and immobilization of pollutants in soil and water systems. Additionally, it explores the economic viability of HS-based waste management and potential revenue streams from value-added products derived from HS. The paper also addresses environmental and regulatory considerations, emphasizing the importance of comprehensive regulatory frameworks, international policy and regulatory support, and continuous monitoring and evaluation of waste management practices. By integrating HS-based waste management into circular economy models, the paper suggests that it can contribute to resource conservation, nutrient recycling, and the development of a bio-based economy. Overall, the utilization of HS in organic waste management has the potential to revolutionize the field and contribute to sustainable resource recovery. The paper suggests that future research should continue to explore the quantifiable benefits of integrating HS into organic waste management, ultimately contributing to a more sustainable and efficient waste management system.

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From biomass to humic acid: Is there an accelerated way to go?

Cited by 37 publications

References 42 publications

Hydrothermal humification mechanism of typical agricultural waste biomass: a case study of corn straw

Hydrothermal humification mechanism of typical agricultural waste biomass: a case study of corn straw

Radical-induced rapid humification of waste milk and the performance of derived slow release fulvic-like fertilizer

Transforming Organic Solid Waste Management: Embracing Humification for Sustainable Resource Recovery

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