Sorption of organic compounds to humin from soils irrigated with reclaimed wastewater

Drori, Yaron; Aizenshtat, Zeev; Chefetz, Benny

doi:10.1016/j.geoderma.2008.02.012

Cited by 16 publications

(13 citation statements)

References 40 publications

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“…The results clearly indicate a dominance of HM and BC particles in the overall sorption of Phen by the original sediments. Our finding is consistent with several previous studies that directly or indirectly demonstrated that condensed organic matter, including HM, kerogen, coal, and soot particles in soils and sediments are important sorbents for HOCs (Accardi-Dey and Gschwend 2002; Luo et al 2008;Liu et al 2008;Drori et al 2008).…”

Section: Yangtze Riversupporting

confidence: 93%

Phenanthrene sorption to humic acids, humin, and black carbon in sediments from typical water systems in China

Zhang

Lin

et al. 2009

Environ Monit Assess

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Humic acid (HA) and humin (HM) were extracted with 0.1 M NaOH and black carbon (BC) was isolated using a combustion method at 375 degrees C from six sediments in different areas in China and their sorption isotherms for phenanthrene (Phen) were determined. All sorption isotherms were nonlinear and fitted well with the Freundlich model. Among the SOM, HM and BC with more aromatic carbon controlled the sorption nonlinearity and capacity. Compared to HM, higher K (oc) values were observed for BC due to the combustion of organic matter and native sorbates in HM. For HAs isotherms, a positive relation was observed between the K (oc) values and aliphaticity or H/C ratios, but a negative relation was shown between the n values and polarity of HAs. HA, HM, and BC were responsible for 0.4-9.3%, 46-97%, and 65-96% of the total sorption, respectively, indicating the dominance of HM and BC fractions in overall sorption of Phen by the sediments.

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Section: Yangtze Riversupporting

confidence: 93%

Phenanthrene sorption to humic acids, humin, and black carbon in sediments from typical water systems in China

Zhang

Lin

et al. 2009

Environ Monit Assess

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“…Concordant with this, in the multiple regression model pH was the only parameter selected ( Table 5). The H values showed a low hysteresis, indicating that penoxsulam was bound with low energy at high concentration in the solution and it was desorbed easily, [25] which is concordant to the low free energy estimated for this soil (Table 3).…”

Section: Sorption Processsupporting

confidence: 86%

Adsorption and desorption variability of four herbicides used in paddy rice production

Alister

Araya

Kogan

2010

Journal of Environmental Science and Health, Part B

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This investigation was performed to determine the effect of physicochemical soil properties on penoxsulam, molinate, bentazon, and MCPA adsorption-desorption processes. Four soils from Melozal (35° 43' S; 71° 41' W), Parral (36° 08' S; 71° 52' W), San Carlos (36° 24' S; 71° 57' W), and Panimavida (35° 44' S; 71° 24' W) were utilized. Herbicide adsorption reached equilibrium after 4 h in all soils. The Freundlich L-type isotherm described the adsorption process, which showed a high affinity between herbicides and sorption sites mainly because of hydrophobic and H-bonds interaction. Penoxsulam showed the highest adsorption coefficients (4.23 ± 0.72 to 10.69 ± 1.58 mL g⁻¹) and were related to soil pH. Molinate showed K(d) values between 1.72 ± 0.01 and 2.3 ± 0.01 mL g⁻¹ and were related to soil pH and organic matter, specifically to the amount of humic substances. Bentazon had a high relationship with pH and humic substances and its K(d) values were the lowest, ranging from 0.11 ± 0.01 to 0.42 ± 0.01 mL g⁻¹. MCPA K(d) ranged from 0.14 ± 0.02 to 2.72 ± 0.01 mL g⁻¹, however its adsorption was related to humic acids and clay content. According to these results, the soil factors that could explain the sorption process of the studied herbicides under paddy rice soil conditions, were principally humic substances and soil pH. Considering the sorption variability observed in this study and the potential risk for groundwater contamination, it is necessary to develop weed rice management strategies that limit use of herbicides that exhibit low soil adsorption in areas with predisposing conditions to soil leaching.

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“…Results obtained by Rice (1999), andTrembly et al (2005) showed that after extraction of lipid from sediment and humin, the sorption capacity of phenanthrene increased drastically, and the nonlinearity of the sorption isotherms was much more pronounced, thereby revealing the important role of lipid in the HOC sorption. However, Drori et al (2006Drori et al ( , 2008 found that phenanthrene sorption was not significantly affected by lipid removal. Lipids were better competitors for sorbates capable of polar interactions than for phenanthrene.…”

Section: Introductionmentioning

confidence: 96%

Effects of humic acid and lipid on the sorption of phenanthrene on char

Wen

Huang

et al. 2009

Geoderma

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Sorption of organic compounds to humin from soils irrigated with reclaimed wastewater

Cited by 16 publications

References 40 publications

Phenanthrene sorption to humic acids, humin, and black carbon in sediments from typical water systems in China

Phenanthrene sorption to humic acids, humin, and black carbon in sediments from typical water systems in China

Adsorption and desorption variability of four herbicides used in paddy rice production

Effects of humic acid and lipid on the sorption of phenanthrene on char

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