Changes in the chemical composition of water-extractable organic matter during composting: Distribution between stable and labile organic matter pools

verfasst von

D. Said-Pullicino, K. Kaiser, G. Guggenberger, G. Gigliotti

Abstract

Aerobic decomposition and stabilization of organic matter during the composting of waste materials is primarily due to the biochemical transformation of water-soluble compounds in the liquid phase by the microbial biomass. For this reason water-soluble organic matter represents the most active fraction of compost, both biologically and chemically, and thus should directly reflect the biochemical alteration of organic matter. This work aims to elucidate the microbial-mediated processes responsible for the distribution of soluble organic matter between stable and labile pools with composting time. Accordingly, chemical analysis as well as UV absorption, and ¹H and ¹³C-NMR spectroscopy of samples collected during the industrial composting of urban waste revealed microbial induced transformation of water-extractable organic matter over time. The chemical composition changed from labile, hydrophilic, plant-derived organic compounds in the beginning to predominately stable, hydrophobic moieties comprising lignin-derived phenols and microbially-derived carbohydrates at later stages of composting.

Externe Organisation(en)

University of Perugia
Martin-Luther-Universität Halle-Wittenberg

Typ

Artikel

Journal

CHEMOSPHERE

Band

66

Seiten

2166-2176

Anzahl der Seiten

11

ISSN

0045-6535

Publikationsdatum

02.2007

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Environmental engineering, Umweltchemie, Allgemeine Chemie, Umweltverschmutzung, Gesundheit, Toxikologie und Mutagenese

Ziele für nachhaltige Entwicklung

SDG 11 – Nachhaltige Städte und Gemeinschaften

Elektronische Version(en)

https://doi.org/10.1016/j.chemosphere.2006.09.010 (Zugang: Geschlossen)