Sorption of humic acids by bacteria

Capacity for sorption of humic acid (HA) from water solutions was shown for 38 bacterial strains. Isotherms of HA sorption were determined for the cells of 10 strains. The bonding strength between the cells and HA ( k ) and the terminal adsorption ( Q max ) determined from the Langmuir equation for...

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Bibliographic Details
Published inMicrobiology (New York) Vol. 82; no. 6; pp. 707 - 712
Main Authors Tikhonov, V. V., Orlov, D. S., Lisovitskaya, O. V., Zavgorodnyaya, Yu. A., Byzov, B. A., Demin, V. V.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.11.2013
Subjects
Biomedical and Life Sciences
Experimental Articles
Life Sciences
Medical Microbiology
Microbiology
humic acids
cell wall
sorption
gram-positive and gram-negative bacteria
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Summary:Capacity for sorption of humic acid (HA) from water solutions was shown for 38 bacterial strains. Isotherms of HA sorption were determined for the cells of 10 strains. The bonding strength between the cells and HA ( k ) and the terminal adsorption ( Q max ) determined from the Langmuir equation for gram-positive and gram-negative bacteria were reliably different. Gram-positive bacteria sorbed greater amounts of HA than gram-negative ones ( Q max = 23 ± 10 and 5.6 ± 1.2 mg/m 2 , respectively). The bonding strength between HA and the cells was higher in gram-negative bacteria than in gram-positive: k = 9 ± 5 and 3.3 ± 1.1 mL/mg, respectively.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0026-2617
1608-3237
DOI:10.1134/S0026261713060106