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 MAL as a competitive low-cost biosurfactant.
Chemicals from Wastes: Compost-Derived Humic Acid–Like Matter as Surfactant
QUAGLIOTTO, Pierluigi;MONTONERI, Enzo;GOBETTO, Roberto;VISCARDI, Guido
2006-01-01
Abstract
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 MAL as a competitive low-cost biosurfactant.
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