A new combined green method for 2-Chlorophenol removal using cross-linked Brassica rapa peroxidase in silicone oil

Autor: Mahmoud Abouseoud, Amina Tassist, Nassima Tandjaoui, Annabelle Couvert, Abdeltif Amrane
Přispěvatelé: Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Laboratoire de Biomatériaux et Phénomènes de Transport, Université Yahia Fares de Médéa, Laboratoire de Génie de la Réaction, Université des Sciences et de la Technologie Houari Boumediene [Alger] (USTHB), Université européenne de Bretagne - European University of Brittany (UEB), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene [Alger] (USTHB)
Rok vydání: 2016
Předmět:
Environmental Engineering
Health
Toxicology and Mutagenesis
02 engineering and technology
010501 environmental sciences
01 natural sciences
Catalysis
VOC treatment
Absorption
chemistry.chemical_compound
[CHIM.GENI]Chemical Sciences/Chemical engineering
Enzymatic degradation
Brassica rapa
Silicone Oils
Environmental Chemistry
Volatile organic compound
Brassica rapa peroxidase
2-Chlorophenol
Hydrogen peroxide
Peroxidase
0105 earth and related environmental sciences
chemistry.chemical_classification
Air Pollutants
Volatile Organic Compounds
Chromatography
CLEAs
[SDE.IE]Environmental Sciences/Environmental Engineering
Public Health
Environmental and Occupational Health
Hydrogen Peroxide
General Medicine
General Chemistry
021001 nanoscience & nanotechnology
Pollution
6. Clean water
Silicone oil
Solvent
Partition coefficient
Cross-Linking Reagents
chemistry
Glutaral
Yield (chemistry)
Adsorption
0210 nano-technology
Chlorophenols
Zdroj: Chemosphere
Chemosphere, Elsevier, 2016, 148, pp.55-60. ⟨10.1016/j.chemosphere.2016.01.021⟩
Chemosphere, 2016, 148, pp.55-60. ⟨10.1016/j.chemosphere.2016.01.021⟩
ISSN: 0045-6535
Popis: International audience; This study proposes a new technique to treat waste air containing 2-Chlorophenol (2-CP), namely an integrated process coupling absorption of the compound in an organic liquid phase and its enzymatic degradation. Silicone oil (47V20) was used as an organic absorbent to allow the volatile organic compound (VOC) transfer from the gas phase to the liquid phase followed by its degradation by means of Cross-linked Brassica rapa peroxidase (BRP) contained in the organic phase. An evaluation of silicone oil (47V20) absorption capacity towards 2-CP was first accomplished by determining its partition coefficient (H) in this solvent. The air-oil partition coefficient of 2-CP was found equal to 0.136 Pa m(3) mol(-1), which is five times lower than the air-water value (0.619 Pam(3) mol(-1)). The absorbed 2-CP was then subject to enzymatic degradation by cross-linked BRP aggregates (BRP-CLEAs). The degradation step was affected by four parameters (contact time; 2-CP, hydrogen peroxide and enzyme concentrations), which were optimized in order to obtain the highest conversion yield. A maximal conversion yield of 69% and a rate of 1.58 mg L(-1) min(-1)were obtained for 100 min duration time when 2-CP and hydrogen peroxide concentrations were respectively 80 mg L(-1) and 6 mM in the presence of 2.66 UI mL(-1) BRP-CLEAs. The reusability of BRP-CLEAs in silicone oil was assessed, showing promising results since 59% of their initial efficiency remained after three batches.
Databáze: OpenAIRE
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