View in EDS HTML Full Text PDF Full Text

Effect of oxidant on extraction of humic acid from bituminous coal.

Saved in:
Bibliographic Details
Title: Effect of oxidant on extraction of humic acid from bituminous coal.
Authors: Guo, Xin1 (AUTHOR), Ma, Litong1,2,3 (AUTHOR) mlt0916@126.com, Liu, Wenxin4 (AUTHOR), Li, Jianyu1 (AUTHOR)
Source: International Journal of Coal Preparation & Utilization. 2026, Vol. 46 Issue 5, p1416-1428. 13p.
Subject Terms: *Humic acid, *Bituminous coal, *Hydrogen peroxide, *Functional groups, *Oxidizing agents, *Chlorine dioxide, *Extraction techniques
Abstract: Low-grade bituminous coal is commonly used for combustion for power generation and as gasification coal. In order to explore a new way of clean utilization of bituminous coal, this paper studies the effect of oxidizing agent on extraction of humic acid from bituminous coal, using chlorine dioxide and hydrogen peroxide to oxidize bituminous coal, and then extracting humic acid by alkali-soluble acid extraction, and analyzes the obtained humic acid. The findings indicated that various oxidants influenced the extraction rate and purity of humic acid derived from bituminous coal. The humic acid extraction yield from bituminous coal pretreated with 2% chlorine dioxide was 56.00%, with a purity of 18.80%. The purity of humic acid of bituminous coal pretreatment with 30% hydrogen peroxide was the highest, reaching 50.84%, and the extraction rate was 53.47%. Humic acid extracted from bituminous coal pretreatment by chlorine dioxide is rich in functional groups, such as methyl, methylene, carboxyl, carbon–carbon double bond, etc., and its molecular weight is small. The results show that oxidizing agent has great influence on extraction rate, purity and functional group content of bituminous coal humic acid, but has little influence on functional group type. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: enr
DbLabel: Energy & Power Source
An: 193489593
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Effect of oxidant on extraction of humic acid from bituminous coal.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Guo%2C+Xin%22">Guo, Xin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Litong%22">Ma, Litong</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> mlt0916@126.com</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Wenxin%22">Liu, Wenxin</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Jianyu%22">Li, Jianyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Coal+Preparation+%26+Utilization%22">International Journal of Coal Preparation & Utilization</searchLink>. 2026, Vol. 46 Issue 5, p1416-1428. 13p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Humic+acid%22">Humic acid</searchLink><br />*<searchLink fieldCode="DE" term="%22Bituminous+coal%22">Bituminous coal</searchLink><br />*<searchLink fieldCode="DE" term="%22Hydrogen+peroxide%22">Hydrogen peroxide</searchLink><br />*<searchLink fieldCode="DE" term="%22Functional+groups%22">Functional groups</searchLink><br />*<searchLink fieldCode="DE" term="%22Oxidizing+agents%22">Oxidizing agents</searchLink><br />*<searchLink fieldCode="DE" term="%22Chlorine+dioxide%22">Chlorine dioxide</searchLink><br />*<searchLink fieldCode="DE" term="%22Extraction+techniques%22">Extraction techniques</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Low-grade bituminous coal is commonly used for combustion for power generation and as gasification coal. In order to explore a new way of clean utilization of bituminous coal, this paper studies the effect of oxidizing agent on extraction of humic acid from bituminous coal, using chlorine dioxide and hydrogen peroxide to oxidize bituminous coal, and then extracting humic acid by alkali-soluble acid extraction, and analyzes the obtained humic acid. The findings indicated that various oxidants influenced the extraction rate and purity of humic acid derived from bituminous coal. The humic acid extraction yield from bituminous coal pretreated with 2% chlorine dioxide was 56.00%, with a purity of 18.80%. The purity of humic acid of bituminous coal pretreatment with 30% hydrogen peroxide was the highest, reaching 50.84%, and the extraction rate was 53.47%. Humic acid extracted from bituminous coal pretreatment by chlorine dioxide is rich in functional groups, such as methyl, methylene, carboxyl, carbon–carbon double bond, etc., and its molecular weight is small. The results show that oxidizing agent has great influence on extraction rate, purity and functional group content of bituminous coal humic acid, but has little influence on functional group type. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=193489593
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/19392699.2025.2498523
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 1416
    Subjects:
      – SubjectFull: Humic acid
        Type: general
      – SubjectFull: Bituminous coal
        Type: general
      – SubjectFull: Hydrogen peroxide
        Type: general
      – SubjectFull: Functional groups
        Type: general
      – SubjectFull: Oxidizing agents
        Type: general
      – SubjectFull: Chlorine dioxide
        Type: general
      – SubjectFull: Extraction techniques
        Type: general
    Titles:
      – TitleFull: Effect of oxidant on extraction of humic acid from bituminous coal.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Guo, Xin
      – PersonEntity:
          Name:
            NameFull: Ma, Litong
      – PersonEntity:
          Name:
            NameFull: Liu, Wenxin
      – PersonEntity:
          Name:
            NameFull: Li, Jianyu
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 05
              Text: 2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 19392699
          Numbering:
            – Type: volume
              Value: 46
            – Type: issue
              Value: 5
          Titles:
            – TitleFull: International Journal of Coal Preparation & Utilization
              Type: main
ResultId 1