Effects of organic matter heterogeneity on sorption and desorption of organic contaminants by soils and sediments

Huang, Weilin; Peng, Ping’an; Yu, Zhiqiang; Fu, Jiamo

doi:10.1016/s0883-2927(02)00205-6

Cited by 384 publications

(270 citation statements)

References 82 publications

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“…Endothermic processes have been observed for sorption of PFOS to polymer materials, and sorption enthalpies of nonionic chemicals to polymers averaged 3.5 kJ/mol (ten Hulscher and Cornelissen, 1996). The physicochemical properties of humic acid were similar to those of organic polymeric materials (Huang et al, 2003), thus the similar enthalpy change between the sorption to the humic acid and to the polymers is reasonable. For ionic chemicals, the enthalpyrelated forces were relatively great due to the additional contribution of electrostatic interactions (Banerjee et al, 2008).…”

Section: Estimation Of Sorption Thermodynamic Parametersmentioning

confidence: 79%

“…Glassy domains are related to desorption hysteresis, whereas rubbery domains are proposed to account for reversible sorption. Humic acid was the mixture of macromolecules, and exhibit certain bulk physicochemical properties similar to those of organic polymeric materials (Huang et al, 2003). The rigidity of a macromolecular structure was reflected by the glass transition temperature T g , which has been discovered for humic acids with differential scanning calorimetry analysis and ranged between 43 and 72°C (Schaumann and Antelmann, 2000;Katherine et al, 2000;LeBoef and Weber, 2000;Young and LeBoeuf, 2000).…”

Section: Sorption and Desorption Of Pfos To Humic Acid At Different Tmentioning

confidence: 99%

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Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid

Jia

You

Pan

2010

Journal of Environmental Sciences

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Section: Estimation Of Sorption Thermodynamic Parametersmentioning

confidence: 79%

Section: Sorption and Desorption Of Pfos To Humic Acid At Different Tmentioning

confidence: 99%

Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid

Jia

You

Pan

2010

Journal of Environmental Sciences

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“…Depending on the soil particle size fractions, which can be distinguished as clay (o2 mm), fine silt (2-20 mm), coarse silt (20-63 mm) and sand (63-2000 mm), the composition of their associated organic matter is also different (Christensen, 1992;Guggenberger et al, 1994;Kö gel-Knabner et al, 2008). This heterogeneity of soil organic matter also has a tremendous effect on their sorption potential Huang et al, 2003), and it can thus be expected that partitioning of organic pollutants is strongly affected by soil particle size fractions. Recently, we could demonstrate that these particle size fractions within one soil are also colonized by distinct microbial communities (Neumann et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Importance of soil organic matter for the diversity of microorganisms involved in the degradation of organic pollutants

et al. 2014

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Many organic pollutants are readily degradable by microorganisms in soil, but the importance of soil organic matter for their transformation by specific microbial taxa is unknown. In this study, sorption and microbial degradation of phenol and 2,4-dichlorophenol (DCP) were characterized in three soil variants, generated by different long-term fertilization regimes. Compared with a non-fertilized control (NIL), a mineral-fertilized NPK variant showed 19% and a farmyard manure treated FYM variant 46% more soil organic carbon (SOC). Phenol sorption declined with overall increasing SOC because of altered affinities to the clay fraction (soil particles o2 mm in diameter). In contrast, DCP sorption correlated positively with particulate soil organic matter (present in the soil particle fractions of 63-2000 lm). Stable isotope probing identified Rhodococcus, Arthrobacter (both Actinobacteria) and Cryptococcus (Basidiomycota) as the main degraders of phenol. Rhodococcus and Cryptococcus were not affected by SOC, but the participation of Arthrobacter declined in NPK and even more in FYM. 14 C-DCP was hardly metabolized in the NIL variant, more efficiently in FYM and most in NPK. In NPK, Burkholderia was the main degrader and in FYM Variovorax. This study demonstrates a strong effect of SOC on the partitioning of organic pollutants to soil particle size fractions and indicates the profound consequences that this process could have for the diversity of bacteria involved in their degradation.

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“…Traditionally, SOM has been divided into three operationally defined fractions according to their saponifiable properties: fulvic acid (FA), humic acid (HA), and humin. The heterogeneous natures of fulvic and humic acids have been extensively characterized (3). The impacts of the physical and geochemical characteristics of HA on the sorption of HOCs have been studied (7,8).…”

Section: Introductionmentioning

confidence: 99%

Phenanthrene Sorption to Soil Humic Acid and Different Humin Fractions

Wen

Zhang

et al. 2007

Environ. Sci. Technol.

149

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This study was undertaken to provide an insight into the effect of heterogeneous soil organic matter (SOM) on the sorption of phenanthrene. Humic acid (HA) and humin were extracted from a peat soil. Humin was further fractionated into bound-humic acid (BHA), lipid, and insoluble residue (IR) fractions. Heterogeneous natures of these fractions were characterized by elemental analysis, ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, and solid-state 13 C NMR. Aliphaticity of the fractions followed the order lipid >BHA > HA > IR, while the polarity order was IR > BHA> HA > lipid. Sorption of phenanthrene on these fractions fitted the Freundlich equation, suggesting that phenanthrene sorption isotherms of lipid were almost linear (N ) 0.993), while those of HA, BHA, and IR were nonlinear, with N values ranging from 0.723 to 0.910. The N values followed the order lipid > HA > BHA > IR and were significantly correlated inversely with their polarities (p < 0.05). Organic carbon-normalized sorption coefficients (K FOC ) were independent of aliphatic or aromatic contents of the SOM fractions. The results suggested that SOM, especially for the humin fractions, was highly heterogeneous in terms of elemental composition, structure, and polarity. Such heterogeneity was considered to be responsible for the nonlinear sorption of phenanthrene.

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Effects of organic matter heterogeneity on sorption and desorption of organic contaminants by soils and sediments

Cited by 384 publications

References 82 publications

Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid

Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid

Importance of soil organic matter for the diversity of microorganisms involved in the degradation of organic pollutants

Phenanthrene Sorption to Soil Humic Acid and Different Humin Fractions

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