Dynamic evolution of humic acids during anaerobic digestion: exploring an effective auxiliary agent for heavy metal remediation

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dc.contributor.authorWang, Xiqing
dc.contributor.authorLyu, Tao
dc.contributor.authorDong, Renjie
dc.contributor.authorLiu, Hongtao
dc.contributor.authorWu, Shubiao
dc.date.accessioned2020-11-02T15:32:22Z
dc.date.available2020-11-02T15:32:22Z
dc.date.issued2020-10-28
dc.description.abstractInformation on the dynamic evolution of humic acid (HA) from anaerobic digestate and the potential of HA serving as an effective agent for remedying heavy metals is rather scarce. This study monitored the evolution of the structure and functional groups and metal-binding abilities of HA during chicken manure and corn stover anaerobic digestion (AD) processes. Higher increases in aromatic (41-66%) and oxygen-containing functional groups (37-45%) were observed in HA from the AD of corn stover, resulting in higher metal-binding abilities for Cu(II), Co(II), and Ni(II) than those of chicken manure AD. Moreover, HA extracted from fast (before day 12 for chicken manure and day 16 for corn stover), and slow (day 40) methane production stages performed different complexation capacities for the heavy metals. These results reveal the mechanisms of HA and heavy metal interactions, and confirm the potential of HA extracted from AD process for the remediation of heavy metals.en_UK
dc.identifier.citationWang X, Lyu T, Dong R, et al., (2021) Dynamic evolution of humic acids during anaerobic digestion: exploring an effective auxiliary agent for heavy metal remediation. Bioresource Technology, Volume 320, Part A, January 2021, Article number 124331en_UK
dc.identifier.issn0960-8524
dc.identifier.urihttps://doi.org/10.1016/j.biortech.2020.124331
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15955
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAnaerobic processbinding capacityen_UK
dc.subjecthumic substanceen_UK
dc.subjectphytoremediationen_UK
dc.subjecttoxic metalsen_UK
dc.titleDynamic evolution of humic acids during anaerobic digestion: exploring an effective auxiliary agent for heavy metal remediationen_UK
dc.typeArticleen_UK

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