Effects of Fe 3+ on Hydrothermal Humification of Agricultural Biomass

Hydrothermal humification technology for the preparation of artificial humic matters provides a new strategy, greatly promoting the natural maturation process. Iron, as a common metal, is widely used in the conversion of waste biomass; however, the influence of Fe 3+ on hydrothermal humification rem...

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Bibliographic Details
Published inChemSusChem Vol. 17; no. 4; p. e202301227
Main Authors Peng, Xiong‐Xin, Gai, Shuang, Liu, Zhuqing, Cheng, Kui, Yang, Fan
Format Journal Article
LanguageEnglish
Published Germany 22.02.2024
Subjects
oxidation
hydrothermal humification
waste biomass
FeCl3 catalyst
artificial humic matters
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Summary:Hydrothermal humification technology for the preparation of artificial humic matters provides a new strategy, greatly promoting the natural maturation process. Iron, as a common metal, is widely used in the conversion of waste biomass; however, the influence of Fe 3+ on hydrothermal humification remains unknown. In this study, FeCl 3 is used to catalyze the hydrothermal humification of corn straw, and the influence of Fe 3+ on the hydrothermal humification is explored by a series of characterization techniques. Results show that Fe 3+ as the catalyst can promote the decomposition of corn straw, shorten the reaction time from 24 h to 6 h, and increase the yield from 6.77 % to 14.08 %. However, artificial humic acid (A‐HA) obtained from Fe 3+ ‐catalysis hydrothermal humification contains more unstable carbon and low amount of aromatics, resulting in a significantly decreased stability of the artificial humic acid. These results provide theoretical guidance for regulating the structure and properties of artificial humic acid to meet various maintenance needs.
ISSN:1864-5631
1864-564X
DOI:10.1002/cssc.202301227