In this study, the effects of three surfactants, i.e. the anionic biosurfactant dirhamnolipid (diRL), the cationic surfactant hexadecyltrimethyl ammonium bromide (CTAB), and the anionic surfactant sodium dodecyl sulfate (SDS), on the removal of phenol catalyzed by laccase were studied first. CTAB and SDS were detrimental, while diRL improved phenol removal and was selected for detailed research. The biosurfactant increased the activity of laccase and the removal of phenol with the increase of diRL concentrations from 10.6 to 318 μM. DiRL at 318 μM improved the removal when the initial concentrations of phenol were from 50 to 400 mg/l. In particular, the removal of phenol with 318 μM diRL was 4.3-6.4 folds that of the controls within 24 h when the initial concentration of phenol was 400 mg/l. The presence of diRL at 318 μM also caused the complete removal (above 98%) of phenol at concentrations from 50 to 400 mg/l after 24 h. The enhancement of phenol removal was over a wide range of pH and temperatures, and the highest removal efficiency was obtained at pH 6.0 and 50°C. The results suggest that diRL had potential application in the enhancement of phenols removal catalyzed by laccase in water treatment or remediation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s11274-011-0806-3 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-entropy alloys catalyzing polymeric transformation of water pollutants with remarkably improved electron utilization efficiency.
Nat Commun
January 2025
School of Chemical Engineering, The University of Adelaide, Adelaide, SA, Australia.
High-entropy alloy nanoparticles (HEA-NPs) exhibit favorable properties in catalytic processes, as their multi-metallic sites ensure both high intrinsic activity and atomic efficiency. However, controlled synthesis of uniform multi-metallic ensembles at the atomic level remains challenging. This study successfully loads HEA-NPs onto a nitrogen-doped carbon carrier (HEAs) and pioneers the application in peroxymonosulfate (PMS) activation to drive Fenton-like oxidation.
View Article and Find Full Text PDFPotential and characteristics on nitrobenzene degradation by biological acidification.
J Environ Manage
December 2024
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environment Sciences, Beijing, 100012, PR China; Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China. Electronic address:
Biological acidification, efficient and low-cost biotechnology, is crucial in treating pharmaceutical, pesticide water, and petrochemical wastewater. Nitrobenzene is a typical organic pollutant in petrochemical wastewater with high toxicity and long persistence. However, its effect on hydrolysis acidification is yet to be fully elucidated.
View Article and Find Full Text PDFOptimization of Green Extraction Techniques for Polyphenolics in Bark Extract and Steam Gasification of the Remaining Fraction to Obtain Hydrogen-Rich Syngas and Activated Carbon.
ACS Omega
December 2024
Ege University Solar Energy Institute, 35040 Bornova, Izmir, Turkey.
Utilization of renewable resources has become imperative, and considerable efforts have been devoted to tackling diverse global sustainability challenges, which contribute to the circular economy. The focus of this work was to optimize the extraction of polyphenolic compounds in bark using microwave-assisted (MAE) and ultrasonically assisted (UAE) extractions and evaluate the biological efficacies of the extracts. Additionally, the residue of the extracted pine bark was subjected to steam gasification to produce hydrogen-rich syngas and activated carbon.
View Article and Find Full Text PDFAnthelmintic Potential of Discarded Seeds: a sustainable approach to agricultural by-product utilization.
J Pharmacopuncture
December 2024
Department of Applied Nutrition and Food Technology, Islamic University, Kushtia, Bangladesh.
Objectives: (Sonn.), belonging to the Sapindaceae family, has historically been used for the treatment of gastrointestinal ailments, including ulcers, gastritis, diarrhea, and infections Plants in the Sapindaceae family have demonstrated potential anthelmintic effects, while the efficacy of remains barely investigated. seeds are often discarded as waste; however, utilizing these seeds promotes sustainable practices and may provide a natural alternative to conventional anthelmintics.
View Article and Find Full Text PDFA chemometric approach to the interaction of hydrogen peroxide and thermally activated persulfate in the removal of aromatic compounds.
J Environ Manage
December 2024
Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, via Giovanni Paolo II 132, 84084, Fisciano, SA, Italy.
This study evaluates the combined use of H₂O₂ and thermally activated S₂O₈⁻ (T-PDS) for the degradation of phenolic compounds (PhOH) in wastewater, aiming to limit or eliminate sludge production. Phenolic compounds are common in industrial effluents, and their effective removal is crucial for reducing environmental impact. The study employs Response Surface Methodology (RSM) and Principal Component Analysis (PCA) to optimise critical variables such as temperature, pH, and oxidant concentrations.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!