Chlorpyrifos-methyl solubilisation by humic acids used as bio-surfactants extracted from lignocelluloses and kitchen wastes
| Autor: | Andrea Baglieri, Mara Gennari, Fabrizio Adani, Barbara Scaglia, Fulvia Tambone |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis Chlorpyrifos-methyl Biosurfactant Humic acid Organic waste SDS Polysorbates 010501 environmental sciences Garbage 01 natural sciences Lignin Soil Surface-Active Agents Pulmonary surfactant Environmental Chemistry Leonardite Food science Biomass Environmental Restoration and Remediation Humic Substances 0105 earth and related environmental sciences chemistry.chemical_classification Chromatography Public Health Environmental and Occupational Health 04 agricultural and veterinary sciences General Medicine General Chemistry Biodegradable waste Pesticide Contamination Pollution Food waste chemistry 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Chlorpyrifos |
| Popis: | Chlorpyrifos-methyl (CLP-m) is a widely used organophosphate insecticide that can accumulate in soil and become toxic to humans. CLP-m can be removed from soil by its solubilisation using synthetic surfactants. However, synthetic surfactants can accumulate in soil causing contamination phenomena themselves. Bio-surfactants can be used as an alternative to synthetic ones, reducing costs and environmental issues. In this work, humic acid (HA) extracted from raw biomasses, i.e. lignocelluloses (HA L ) and lignocelluloses plus kitchen food waste (HA LF ), corresponding composts (C) (HA LC and HA LFC ) and leonardite (HAc), were tested in comparison with commercial surfactants, i.e. SDS, Tween 20 and DHAB, to solubilize CLP-m. Results obtained indicated that only biomass-derived HA, composted biomass-derived HA, and SDS solubilized CLP-m: SDS = 0.006; HAL = 0.007; HALC = 0.009 g; HALF = 0.025; HALFC = 0.024) (g CLP-m g −1 surfactant). Lignocelluloses HAs (HA L, HA LF ) solubilized CLP-m just as well as SDS while lignocellulosic plus kitchen food waste HA (HA LF, HA LFC ) showed a three times higher CLP-m solubilisation capability. This difference was attributed to the higher concentration of alkyl-Carbon that creates strong links with CLP-m in the hydrophobic micelle-core of the surfactants. |
| Databáze: | OpenAIRE |
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