Journal
ENVIRONMENTAL POLLUTION
Volume 198, Issue -, Pages 61-69Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2014.12.020
Keywords
Nonylphenol (NP); Biosorption; Algae; Lipid (LP); Acid nonhydrolyzable carbon (NHC)
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Funding
- GIGCAS 135 project [Y234081001]
- key joint project of the National Natural Science Foundation of China and Guangdong Province [U1201235]
- Team Project of the National Natural Science Foundation of China [41121063]
- Earmarked Foundation of the State Key Laboratory [SKLOG2009A04]
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Algal samples were fractionated into lipid (LP), lipid free (LF), alkaline nonhydrolyzable carbon (ANHC), and acid nonhydrolyzable carbon (NHC) fractions, and were characterized by the quantitative C-13 multiCP NMR technique. The biosorption isotherms for nonylphenol (NP) were established and compared with previously published data for phenanthrene (Phen). The log K-OC values are significantly higher for the field-collected plankton samples than for the commercial algae and cultured algae samples, correlating with their lipid contents and aliphatic carbon structure. As the NHC fraction contains more poly(methylene) carbon, it exhibits a higher biosorption capacity. The sorption capacities are negatively related to the polarity index, COO/N-C=O, polar C and O-alkyl C concentrations, but are positively related to the H/O atomic ratios and poly(methylene) carbon. The higher sorption capacities observed for NP than for Phen on the investigated samples are explained by specific interactions such as hydrogen bonding and pi-pi interaction. (C) 2014 Elsevier Ltd. All rights reserved.
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