Biosorption of phenanthrene by pure algae and field-collected planktons and their fractions

Zhang, Dainan; Ran, Chenyang; Yang, Yu; Ran, Yong

doi:10.1016/j.chemosphere.2013.04.068

Cited by 34 publications

(33 citation statements)

References 47 publications

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“…17 The average K OC values at C e = 0.005S w (5.6 μg/mL) measured for the bulk pollens, and the corresponding NHC fractions (sporopollenin) in this study are 2.4 and 6.0 times higher for Phen than for bulk algae and NHC fractions (algaenan), respectively. 20 At C e = 0.005S w , the K OC values for NHC fractions of pollens for Phen fall into a range of 480 000−670 000 mL/g, which are higher than for a K F is the sorption capacity coefficient with unit of (μg/g)/(μg/L) n . b Number of data.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…37 It seems that there are significant correlations among H-to-C and O-to-C atomic ratios and the sorption affinity of Phen by the pollens and their fractions, as observed previously for other biosorbents. 20 Structure of Bulk Pollen and Isolated Fractions. The 13 C solid NMR spectra of the investigated bulk pollens and their fraction samples (thin lines, Figure 1 and Figure S2) represent 13 C CP−TOSS NMR spectra of all C. The corresponding integration results are summarized in Table 1.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…The physicochemical properties of Phen are as follows: molecular weight (MW) of 178.2 g/mol; water solubility (S w ) of 1.12 mg/L; octanol− water partition coefficient (log K ow ) of 4.57; and supercooled liquid-state solubility (S scl ) of 5.18 mg/L. Batch Phen sorption by pollens and their isolated fractions was performed as described elsewhere 20,34 and was described in the Supporting Information. Our preliminary test indicated that because the TFAR, SR, and NHC fractions were nonhydrolyzable organic matter by using a series of the acid and alkali treatments, no apparent organic matter was detectable in the supernatants.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Novel Phenanthrene Sorption Mechanism by Two Pollens and Their Fractions

Zhang

Duan

Huang

et al. 2016

Environ. Sci. Technol.

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A pair of pollens (Nelumbo nucifera and Brassica campestris L.) and their fractions were characterized by elemental analysis and advanced solid-state 13 C NMR techniques and used as biosorbents for phenanthrene (Phen). Their constituents were largely aliphatic components (including sporopollenin), carbohydrates, protein, and lignin as estimated by 13 C NMR spectra of the investigated samples and the four listed biochemical classes. The structure of each nonhydrolyzable carbon (NHC) fraction is similar to that of sporopollenin. The sorption capacities are highly negatively related to polar groups largely derived from carbohydrates and protein but highly positively related to alkyl carbon, poly-(methylene) carbon, and aromatic carbon largely derived from sporopollenin and lignin. The sorption capacities of the NHC fractions are much higher than previously reported values, suggesting that they are good sorbents for Phen. The Freundlich n values significantly decrease with increasing concentrations of poly(methylene) carbon, alkyl C, aromatic moieties, aliphatic components, and the lignin of the pollen sorbents, suggesting that aliphatic and aromatic structures and constituents jointly contribute to the increasing nonlinearity. To our knowledge, this is the first investigation of the combined roles of alkyl and aromatic moiety domains, composition, and accessibility on the sorption of Phen by pollen samples.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Novel Phenanthrene Sorption Mechanism by Two Pollens and Their Fractions

Zhang

Duan

Huang

et al. 2016

Environ. Sci. Technol.

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“…The major steps for isolation of the algal fractions were described elsewhere [54]. Briefly, the bulk samples (OS) were extracted to separate lipids by using Soxhlet extraction with 2:1 CH 2 Cl 2 /CH 3 OH (v/v) for 24 h. The LP fractions were dried at 100 °C.…”

Section: Algal Organic Mattermentioning

confidence: 99%

Composition and structure of natural organic matter through advanced nuclear magnetic resonance techniques

Zhang

Duan

Huang

et al. 2017

Chem. Biol. Technol. Agric.

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Natural organic matter (NOM) plays important roles in biological, chemical, and physical processes within the terrestrial and aquatic ecosystem. Despite its importance, a clear and exhaustive knowledge on NOM chemistry still lacks. Aiming to prove that advanced solid-state 13 C nuclear magnetic resonance (NMR) techniques may contribute to fill such a gap, in this paper we reported relevant examples of its applicability to NOM components, such as biomass, deposition material, sediments, and kerogen samples. It is found that nonhydrolyzable organic carbons (NHC), chars, and polymethylene carbons are important in the investigated samples. The structure of each of the NHC fractions is similar to that of kerogens, highlighting the importance of selective preservation of NOM to the kerogen origin in the investigated aquatic ecosystems. Moreover, during the artificial maturation experiments of kerogen, the chemical and structural characteristics such as protonated aromatic, nonprotonated carbons, and aromatic cluster size play important roles in the origin and variation of nanoporosity during kerogen maturation.

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“…A batch technique using a given amount of sorbent (0.3e80 mg for Phen and 0.1e91 mg for NP) and 20 mL ampoules was utilized for building sorption isotherms. Batch Phen and NP sorption by sediments and their isolated fractions was performed as described elsewhere (Zhang et al, 2013a(Zhang et al, , 2015. Briefly, concentrated stock solutions in methanol were prepared and added to distilled water as needed.…”

Section: Batch Sorption Experimentsmentioning

confidence: 99%