A3 Book section, Chapters in research books
Characterization of humic material formed by composting of domestic and industrial biowastes, Part 1. HPLC of the cupric oxide oxidation products from humic acids (1994)

Miikki, V., Knuutinen, J., Hänninen, K., Alén, R., & Hyötyläinen, J. (1994). Characterization of humic material formed by composting of domestic and industrial biowastes, Part 1. HPLC of the cupric oxide oxidation products from humic acids. Chemosphere, 29(12), 2609-2618. https://doi.org/10.1016/0045-6535(94)90061-2

JYU authors or editors

Publication details

All authors or editors: Miikki, Vesa; Knuutinen, Juha; Hänninen, Kari; Alén, Raimo; Hyötyläinen, Juha

Journal or series: Chemosphere

ISSN: 0045-6535

eISSN: 1879-1298

Publication year: 1994

Volume: 29

Issue number: 12

Pages range: 2609-2618

Publisher: Elsevier

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1016/0045-6535(94)90061-2

Publication open access: Not open

Publication channel open access: 

Abstract

The changes induced by humification of anaerobically digested sewage sludge, source separated biowaste, and pulp mill biosludge were determined by extracting the fractions of bitumen and humic and fulvic acids from the samples of fresh and humified composts. In all cases, a distinct decrease in the amount of bitumen could be detected during humification. The amount of humic acids increased in sewage sludge and biowaste samples, but decreased in pulp mill biosludge sample during humification. The humic acids were degraded by CuO oxidation and the phenolic degradation products were analysed by reversed-phase high-performance liquid chromatography. The yield of these aromatic degradation products was in the range 0.9–2.0 % for each sample. The main phenolic degradation products were 4-hydroxybenzoic acid, vanillic acid, 4-hydroxybenzaldehyde, vanillin, syringaldehyde, and acetovanillone. Two lignin dimers, dehydrodivanillin and dehydrodiacetovanillone, were also identified.

Keywords: household waste; industrial waste; biowaste; composting; sewage sludge; anaerobic fermentation; waste treatment; high pressure liquid chromatography

Free keywords: compost; humic acid; biowaste; cupric oxide oxidation

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