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Biosorption of heavy metal ions from aqueous solutions by short hemp fibers: Effect of chemical composition

Само за регистроване кориснике
2009
Аутори
Pejić, Biljana
Vukčević, Marija
Kostić, Mirjana
Škundrić, Petar
article (publishedVersion)
Метаподаци
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Апстракт
Sorption potential of waste short hemp fibers for Pb2+, Cd2+ and Zn2+ ions from aqueous media was explored. In order to assess the influence of hemp fiber chemical composition on their heavy metals sorption potential, lignin and hemicelluloses were removed selectively by chemical modification. The degree of fiber swelling and water retention value were determined in order to evaluate the change in accessibility of the cell wall components to aqueous solutions due to the fiber modification. The effects of initial ion concentration, contact time and cosorption were studied in batch sorption experiments. The obtained results show that when the content of either lignin or hemicelluloses is progressively reduced by chemical treatment, the sorption properties of hemp fibers are improved. Short hemp fibers are capable of sorbing metal ions (Pb2+, Cd2+ and Zn2+) from single as well as from ternary metal ion solutions. The maximum total uptake capacities for Pb2+, Cd2+ and Zn2+ ions from single... solutions are the same, i.e. 0.078 mmol/g, and from ternary mixture 0.074, 0.035 and 0.035 mmol/g, respectively.

Кључне речи:
Short hemp fibers / Chemical modification / Biosorption / Heavy metals / Fiber swelling
Извор:
Journal of Hazardous Materials, 2009, 164, 1, 146-153
Издавач:
  • Elsevier Science Bv, Amsterdam
Финансирање / пројекти:
  • Ministry of Science of the Republic SerbiaMinistry of Science, Serbia [TR-6713B]
  • ITES Odzaci (Serbia)

DOI: 10.1016/j.jhazmat.2008.07.139

ISSN: 0304-3894

PubMed: 18778893

WoS: 000264667200022

Scopus: 2-s2.0-61749090160
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URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1475
Колекције
  • Radovi istraživača / Researchers’ publications (TMF)
Институција/група
Tehnološko-metalurški fakultet

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