Cupric oxide oxidation of peat and coal humic acids

Kari Hänninen

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

A sulphate lignin and humic acids of 5000-year-old peat, brown coal and black coal were subjected to cupric oxide oxidation. The compounds identified by GC-MS were lignin-derived phenolics, benzenecarboxylic acids and aliphatic mono- and dicarboxylic acids. Two lignin-derived phenolics, p-hydroxybenzoic acid and vanillic acid were common to all matrices. The results showed lignin to be one of the source materials in humification and coalification processes. Its importance in humification should not be exaggerated, however. Additional research is required to confirm whether the unsaturation of peat HA is mainly olefinic, as suggested by this study, or mainly aromatic.
Original languageEnglish
Pages (from-to)75-82
JournalScience of the Total Environment
Volume117-118
DOIs
Publication statusPublished - 1992
MoE publication typeA1 Journal article-refereed

Fingerprint

Humic Substances
Peat
Coal
Lignin
humic acid
lignin
peat
oxide
coal
oxidation
Oxidation
Oxides
humification
Acids
acid
Vanillic Acid
Hydroxybenzoates
Dicarboxylic Acids
coalification
Lignite

Cite this

Hänninen, Kari. / Cupric oxide oxidation of peat and coal humic acids. In: Science of the Total Environment. 1992 ; Vol. 117-118. pp. 75-82.
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Cupric oxide oxidation of peat and coal humic acids. / Hänninen, Kari.

In: Science of the Total Environment, Vol. 117-118, 1992, p. 75-82.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Cupric oxide oxidation of peat and coal humic acids

AU - Hänninen, Kari

PY - 1992

Y1 - 1992

N2 - A sulphate lignin and humic acids of 5000-year-old peat, brown coal and black coal were subjected to cupric oxide oxidation. The compounds identified by GC-MS were lignin-derived phenolics, benzenecarboxylic acids and aliphatic mono- and dicarboxylic acids. Two lignin-derived phenolics, p-hydroxybenzoic acid and vanillic acid were common to all matrices. The results showed lignin to be one of the source materials in humification and coalification processes. Its importance in humification should not be exaggerated, however. Additional research is required to confirm whether the unsaturation of peat HA is mainly olefinic, as suggested by this study, or mainly aromatic.

AB - A sulphate lignin and humic acids of 5000-year-old peat, brown coal and black coal were subjected to cupric oxide oxidation. The compounds identified by GC-MS were lignin-derived phenolics, benzenecarboxylic acids and aliphatic mono- and dicarboxylic acids. Two lignin-derived phenolics, p-hydroxybenzoic acid and vanillic acid were common to all matrices. The results showed lignin to be one of the source materials in humification and coalification processes. Its importance in humification should not be exaggerated, however. Additional research is required to confirm whether the unsaturation of peat HA is mainly olefinic, as suggested by this study, or mainly aromatic.

U2 - 10.1016/0048-9697(92)90074-3

DO - 10.1016/0048-9697(92)90074-3

M3 - Article

VL - 117-118

SP - 75

EP - 82

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

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