Chemicals from Wastes: Compost-Derived Humic Acid-like Matter as Surfactant

Compost humic acid-like (cHAL) polymeric matter (MW = 15610), isolated in 12% yield from food and green waste compost, exhibits very good surfactant properties in aqueous solution: i.e., critical micelle concentration (cmc) = 403 mg/L and surface tension at cmc = 36.1 mN/m. Values of cmc are confir...

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Veröffentlicht in:	Environmental science & technology 2006-03, Vol.40 (5), p.1686-1692
Hauptverfasser:	Quagliotto, Pierluigi, Montoneri, Enzo, Tambone, Fulvia, Adani, Fabrizio, Gobetto, Roberto, Viscardi, Guido
Format:	Artikel
Sprache:	eng
Schlagworte:	Acids Applied sciences Aqueous solutions Composting Decontamination. Miscellaneous Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology Humic Substances - analysis Pollution Pollution, environment geology Soil and sediments pollution Surface Tension Surface-Active Agents - chemistry Surfactants Urban and domestic wastes Wastes
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Zusammenfassung:	Compost humic acid-like (cHAL) polymeric matter (MW = 15610), isolated in 12% yield from food and green waste compost, exhibits very good surfactant properties in aqueous solution: i.e., critical micelle concentration (cmc) = 403 mg/L and surface tension at cmc = 36.1 mN/m. Values of cmc are confirmed also by conductivity and phenanthrene solubility measurements. These results, compared with those for other major commercial and research surfactants, propose cHAL as a competitive low-cost biosurfactant.
ISSN:	0013-936X 1520-5851
DOI:	10.1021/es051637r