Enhanced Soil Remediation via Plant-Based Surfactant Compounds from Acanthophyllum Laxiusculum
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Abstract
In the present study, an aqueous root-extract of Acanthophyllum laxiusculum (AREAL) was evaluated for phenanthrene removal from two samples of contaminated soil. AREAL showed a linear solubilization enhancement for phenanthrene with a weight solubilization ratio of 0.05. Batch soil washing experiments caused the removal of phenanthrene with efficiencies of 96.7 % and 78 % from soils with 0.78 % and 2.73 % organic carbon, respectively. Desorption kinetics of phenanthrene exhibited a two-phase pattern, namely, a rapid release as the initial phase and a slower removal as a subsequent phase. A two-compartment exponential model could adequately represent the two phases of the kinetic pattern of phenanthrene desorption. The rise of pH from acidic to basic levels, decreased phenanthrene removal due to changes in the micelle number of the surfactant phase. Maximum achievable yield of removal was 82 % phenanthrene in a column experiment at defined operational conditions. High removal efficiencies show the potential application of AREAL for improving the bioremediation of polycyclic aromatic hydrocarbons (PAHs) from contaminated soils.
Kurzfassung
In dieser Studie wird die Eignung des wässrigen Wurzelextrakts aus Acanthophyllum laxiusculum (AREAL) für die Entfernung von Phenanthren aus zwei kontaminierten Bodenproben bewertet. In AREAL steigerte sich die Löslichkeit von Phenanthren mit einem Verhältnis von Masse zu Löslichkeit von 0,5 linear. Bodenreinigungsexperimente im Batchverfahren lieferten eine Phenanthren-Entfernung von 96,7 % bzw. 78 % aus Böden mit 0,78 % bzw. 2,73 % organischem Kohlenstoffgehalt. Die Desorptionskinetik von Phenanthren zeigt ein zweiphasiges Verhalten, eine schnelle Phase zu Beginn, gefolgt von einer langsameren Phase. Ein Zweikomponenten-Exponentialmodell konnte die beiden Phasen des kinetischen Verlaufs der Phenanthren-Desorption adäquat wiedergeben. Mit Anstieg der pH-Werte aus dem sauren in den basischen Bereich sinkt die Phenanthren-Entfernung aufgrund der Änderungen der Mizellenzahl in der Tensidphase ab. Maximal konnten 82 % Phenanthren im Säulenexperiment unter definierten Betriebsbedingungen entfernt werden. Die hohe Entfernungseffizienz weist auf eine mögliche Anwendung von AREAL zur Verbesserung der Entfernung von polyzyklischen aromatischen Kohlenwasserstoffen (PAHs) aus kontaminierten Böden hin.
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© 2016, Carl Hanser Publisher, Munich
Articles in the same Issue
- Contents/Inhalt
- Contents
- Physical Chemistry
- Surface-Active Properties of a Trimeric Sulfate-type Surfactant Derived from Glycerol
- Interface Activity and Thermodynamic Properties of Cardanol Polyoxyethylene Ether Carboxylates
- Synthesis and Properties of Dioctyl Diphenyl Ether Disulfonate Gemini Surfactant
- Synthesis and Biological Activity of Alkyl Pyridinium Aldoxime Based Surfactants
- Application
- Enhanced Soil Remediation via Plant-Based Surfactant Compounds from Acanthophyllum Laxiusculum
- Micellar Catalysis
- Picolinic Acid Promoted Permanganate Oxidation of D-Mannitol in Micellar Medium
- Micelle Catalyzed Oxidative Degradation of Paracetamol by Water Soluble Colloidal MnO2 in Acidic Medium
- Corrosion Inhibition
- Adsorption and Corrosion Inhibition Behaviour of Zwitterionic Gemini Surfactant for Mild Steel in 0.5 M HCl
- Laundry/Cleaning Agents
- Effect of the Concentration of Hop Cone Extract on the Antibacterial, Physico-Chemical and Functional Properties of Adhesive Toilet Cleaners
- Laundry Performance: Effect of Detergent and Additives on Consumer Satisfaction
- Deposition of Solid Impurity During Washing of Softented Cotton in Function of the Mixtures of Surfactants
Articles in the same Issue
- Contents/Inhalt
- Contents
- Physical Chemistry
- Surface-Active Properties of a Trimeric Sulfate-type Surfactant Derived from Glycerol
- Interface Activity and Thermodynamic Properties of Cardanol Polyoxyethylene Ether Carboxylates
- Synthesis and Properties of Dioctyl Diphenyl Ether Disulfonate Gemini Surfactant
- Synthesis and Biological Activity of Alkyl Pyridinium Aldoxime Based Surfactants
- Application
- Enhanced Soil Remediation via Plant-Based Surfactant Compounds from Acanthophyllum Laxiusculum
- Micellar Catalysis
- Picolinic Acid Promoted Permanganate Oxidation of D-Mannitol in Micellar Medium
- Micelle Catalyzed Oxidative Degradation of Paracetamol by Water Soluble Colloidal MnO2 in Acidic Medium
- Corrosion Inhibition
- Adsorption and Corrosion Inhibition Behaviour of Zwitterionic Gemini Surfactant for Mild Steel in 0.5 M HCl
- Laundry/Cleaning Agents
- Effect of the Concentration of Hop Cone Extract on the Antibacterial, Physico-Chemical and Functional Properties of Adhesive Toilet Cleaners
- Laundry Performance: Effect of Detergent and Additives on Consumer Satisfaction
- Deposition of Solid Impurity During Washing of Softented Cotton in Function of the Mixtures of Surfactants