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Enhanced Oil Recovery using a Combination of Biosurfactants
Published on: June 3, 2022
Biosurfactants from urban green waste
Enzo Montoneri1, Vittorio Boffa, Piero Savarino
1Dipartimento di Chimica Generale e Chimica Organica, Università di Torino, Corso Massimo d'Azeglio 48, Turin, Italy. enzo.montoneri@unito.it
Chemsuschem
|February 21, 2009
Summary
Compost-derived humic acid-like substances act as effective biosurfactants, demonstrating excellent surface activity and dye-solubilizing properties. These natural compounds show potential as low-cost chemical auxiliaries, with unimers being more effective than micelles.
Area of Science:
- Environmental Science
- Materials Science
- Biochemistry
Background:
- Humic acid-like substances are found in composted organic matter.
- These substances possess surface activity and solvent properties.
- Compost is a readily available waste material.
Purpose of the Study:
- To isolate and characterize biosurfactants from compost.
- To evaluate their surface activity and dye-solubilizing capabilities.
- To assess the effect of compost aging on biosurfactant properties.
Main Methods:
- Isolation of humic acid-like substances from composted green waste (0-60 days).
- Measurement of surface tension reduction and dye solubilization.
- Comparison with synthetic surfactants and soil humic substances.
- Structural investigation using molecular weight determination.
Main Results:
- Compost-derived humic acid-like substances exhibit excellent surface activity and dye solubilization.
- No significant performance differences were observed among samples from different aging periods.
- Dye solubilization was more efficient in the premicellar region compared to the postmicellar region.
- These amphiphilic substances have molecular weights between 1-3 x 10^5 g/mol.
Conclusions:
- Compost is a viable and low-cost source for producing effective biosurfactants.
- These biosurfactants show potential as environmentally friendly chemical auxiliaries.
- Further research is encouraged for their application in various industries.
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