Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida.

Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida. Abstract Text:

Yan-Min Chen,Tsair-Fuh Lin,Chih Huang,Jui-Che Lin,Feng-Ming Hsieh,Yan-Min Chen,Tsair-Fuh Lin,Chih Huang,Jui-Che Lin,Feng-Ming Hsieh,

The degradability of phenol and trichloroethene (TCE) by Pseudomonas putida BCRC 14349 in both suspended culture and immobilized culture systems are investigated. Chitosan beads at a size of about 1-2mm were employed to encapsulate the P. putida cells, becoming an immobilized culture system. The phenol concentration was controlled at 100 mg/L, and that of TCE was studied from 0.2 to 20 mg/L. The pH, between 6.7 and 10, did not affect the degradation of either phenol or TCE in the suspended culture system. However, it was found to be an important factor in the immobilized culture system in which the only significant degradation was observed at pH >8. This may be linked to the surface properties of the chitosan beads and its influence on the activity of the bacteria. The transfer yield of TCE on a phenol basis was almost the same for the suspended and immobilized cultures (0.032 mg TCE/mg phenol), except that these yields occurred at different TCE concentrations. The transfer yield at a higher TCE concentration for the immobilized system suggested that the cells immobilized in carriers can be protected from harsh environmental conditions. For kinetic rate interpretation, the Monod equation was employed to describe the degradation rates of phenol, while the Haldane's equation was used for TCE degradation. Based on the kinetic parameters obtained from the two equations, the rate for the immobilized culture systems was only about 1/6 to that of the suspended culture system for phenol degradation, and was about 1/2 for TCE degradation. The slower kinetics observed for the immobilized culture systems was probably due to the slow diffusion of substrate molecules into the beads. However, compared with the suspended cultures, the immobilized cultures may tolerate a higher TCE concentration as much less inhibition was observed and the transfer yield occurred at a higher TCE concentration.

Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida. Publishing Authors By Initials

YM Chen,TF Lin,C Huang,JC Lin,FM Hsieh,YM Chen,TF Lin,C Huang,JC Lin,FM Hsieh,

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of hazardous materials

VOLUME: 148

Page Numbers: 660-70

Journal Abbreviation: J. Hazard. Mater.

ISSN: 0304-3894

DAY: 14

MONTH: 03

YEAR: 2007

Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9422688

Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida.

AFFILIATION: Department of Environmental Engineering, National Cheng Kung University, Tainan City 70101, Taiwan, ROC.

Country: Netherlands

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: J Hazard Mater

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida Related Publications

• A noninvasive sizing method to choose fitted Amplatzer septal occluder by transthoracic echocardiography in patients with secundum atrial septal defects.
• A prospective study of the transient decrease in ovarian cancer risk following childbirth.
• ATR kinase activation mediated by MutSalpha and MutLalpha in response to cytotoxic O6-methylguanine adducts.
• Bimodal degradation of MLL by SCFSkp2 and APCCdc20 assures cell cycle execution: a critical regulatory circuit lost in leukemogenic MLL fusions.
• Combination of transverse myelitis and arachnoiditis in cauda equina syndrome of long-standing ankylosing spondylitis: MRI features and its role in clinical management.
• Component and intrinsic motion integrate in 'dancing bar' illusion.
• Correlation of umbilical cord blood hormones and growth factors with stem cell potential: implications for the prenatal origin of breast cancer hypothesis.
• DNA methylation dictates histone H3K4 methylation.
• Decreased DOC-2/DAB2 expression in urothelial carcinoma of the bladder.
• Degradation of phenol and TCE using suspended and chitosan-bead immobilized Pseudomonas putida.
• Development and validation of a WHOQOL-BREF Taiwanese audio player-assisted interview version for the elderly who use a spoken dialect.
• Effects of music on gastric myoelectrical activity in healthy humans.
• Elevated plasma factor VIII coagulant activity presenting with thrombophlebitis of the deep dorsal vein of the penis.
• Feasibility and safety of transradial stenting for unprotected left main coronary artery stenoses.
• Fifteen-year experience of children with Henoch-Schönlein purpura in southern Taiwan, 1991-2005.
• Healthcare payment incentives : a comparative analysis of reforms in taiwan, South Korea and china.
• Identification of regional air pollution characteristic and the correlation with public health in Taiwan.
• Lack of prognostic value of EGFR mutations in primary resected non-small cell lung cancer.
• Levels and correlates of alpha-fetoprotein in normal pregnancies among Caucasian and Chinese women.
• Mechanism of increased coxsackie and adenovirus receptor gene expression and adenovirus uptake by phytoestrogen and histone deacetylase inhibitor in human bladder cancer cells and the potential clinical application.
• Mucin 15 is expressed in human placenta and suppresses invasion of trophoblast-like cells in vitro.
• Optimal design of resonant piezoelectric buzzer from a perspective of vibration-absorber theory.
• P42.06: Uterine arteriovenous malformations with three-dimensional presentation: a case report.
• Personality and physical activity: 1971: board #41 may 31 2:00 PM - 3:30 PM.
• Single wire versus double wire loops for median sternotomy closure: experimental biomechanical study using a human cadaveric model.
• Single-molecule measurements of the opening and closing of the DNA gate by eukaryotic topoisomerase II.
• Surface plasmon resonance biosensor based on electro-optically modulated phase detection.
• The assistance of microwave process in sludge stabilization with sodium sulfide and sodium phosphate.
• The infinite regress illusion reveals faulty integration of local and global motion signals.
• Three-dimensional cryotransmission electron microscopy of cells and organelles.