| Enhanced sorption of polycyclic aromatic hydrocarbons from aqueous solution by modified pine bark. | |
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MedLine Citation:
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PMID: 20578284 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To enhance removal efficiency of natural sorbent with polycyclic aromatic hydrocarbons (PAHs), single-solute and bi-solute sorption of phenanthrene and pyrene onto raw and modified pine bark were investigated. Pine bark was modified using Soxhlet extraction, saponification and acid hydrolysis, yielding six bark fractions with different chemical compositions. Raw pine bark exhibited high affinities with PAHs, and sorption was dominated by partitioning. The relatively nonlinear sorption isotherms of modified bark were attributed to the specific interaction between sorbate and aromatic core of sorbent. Comparison with lipid and suberin, lignin was the most powerful sorption medium, but which was almost completely suppressed by coexisting polysaccharide. After consuming polysaccharide by acid hydrolysis, sorption of pine bark fractions was notably increased (4-17 folds); and sorption of pyrene just decreased 16-34% with phenanthrene as a competitor. These observations suggest that pine bark is of great potential for PAHs removal and can be significantly promoted by acid hydrolysis for environmental application. |
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Authors:
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Yungui Li; Baoliang Chen; Lizhong Zhu |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Bioresource technology Volume: 101 ISSN: 1873-2976 ISO Abbreviation: Bioresour. Technol. Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-06-24 Completed Date: 2010-10-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: England |
Other Details:
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Languages: eng Pagination: 7307-13 Citation Subset: IM |
Copyright Information:
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Copyright 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adsorption Biodegradation, Environmental Hydrolysis Lignin / chemistry Phenanthrenes / isolation & purification Pinus / metabolism* Plant Bark / metabolism* Polycyclic Hydrocarbons, Aromatic / isolation & purification* Pyrenes / isolation & purification Regression Analysis Solutions Temperature Water Pollutants, Chemical / isolation & purification |
| Chemical | |
Reg. No./Substance:
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0/Phenanthrenes; 0/Polycyclic Hydrocarbons, Aromatic; 0/Pyrenes; 0/Solutions; 0/Water Pollutants, Chemical; 129-00-0/pyrene; 85-01-8/phenanthrene; 9005-53-2/Lignin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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