Evaluating Nonlinear Sorption of Four Substituted Phenols to Agriculture Soils Using Expanded Polyparameter Linear Free Energy Relationship

Yu, Changming; Bi, Erping

doi:10.1007/s11270-017-3596-x

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…The results indicate that both linear and nonlinear processes were involved, which is related to sorbate properties on the one hand, for instance hydroxylation of PAH derivatives (see Section 3.1), and properties of the soil, especially of SOM on the other hand, for instance characteristics of the SOM matrix (see Section 3.2). The dual mode model (Xing and Pignatello 1997;Yu and Bi 2016) and the dual reactive domain model (Huang et al 1997), which account for both partitioning and non-ideal sorption, were tested but did not yield a superior data fit compared with the Freundlich isotherm (Schneckenburger 2012).…”

Section: Sorption Kinetics and Isothermsmentioning

confidence: 99%

Sorption of PAHs and PAH derivatives in peat soil is affected by prehydration status: the role of SOM and sorbate properties

Schneckenburger

Thiele‐Bruhn

2020

J Soils Sediments

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Purpose Sorption of organic compounds to soil largely determines their mobility and bioavailability in ecosystems. It is well known that molecular properties of the organic sorbates affect the sorbed amounts and sorption kinetics. But also changes in the hydration status of soils alter the physicochemical and sorptive properties of soil organic matter (SOM), which is the main sorbent for organic compounds in soils. This study elucidates the effects of varying SOM prehydration status on sorption of PAHs and PAH derivatives in peat soil. Materials and methods For sorption experiments, topsoil samples of a peat soil with 51% SOM were adjusted to water contents of 15, 30, and 50% (w/w based on dry soil mass) and conditioned for different water contact times of up to 2 years at one constant water content. Sorption kinetics and isotherms of naphthalene, three naphthalene derivatives, phenanthrene, and pyrene to these samples were investigated in batch experiments. Effects of the sorbates’ properties and SOM hydration on sorption were analyzed. Results and discussion Sorption to the peat soil was nonlinear and varied among sorbates and differently prehydrated soil samples. Sorbate polarizability, molecular volume, and weight increased the sorbed amount. Sorption kinetics were two-phased with a fast and a slow sorbing fraction. Hydroxyl groups in sorbates acting as H-donor or acceptor led to an increase of the slow sorbing fraction. Increasing total water contents, amounts of non-freezable water in SOM, increasing pore sizes, and decreasing hydrophobicity of SOM decreased the total sorbed amount and the fast sorbing fraction while increasing the slow sorbing fraction. The latter effects increased with increasing polarity and dipole moment of the sorbate. The SOM matrix rigidity varied with prehydration status; higher SOM matrix rigidity led to non-ideal sorption processes, namely, higher sorption nonlinearity and slower sorption. Conclusions The study revealed the effects and interplay of SOM prehydration status and molecular properties of the sorbates on sorption of PAHs and PAH derivatives. As sorbed amounts may decrease and become non-ideal upon aging at the presence of water, estimations of the mobility of organic compounds in the environment need to consider SOM prehydration status in high organic soils.

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Section: Sorption Kinetics and Isothermsmentioning

confidence: 99%

Sorption of PAHs and PAH derivatives in peat soil is affected by prehydration status: the role of SOM and sorbate properties

Schneckenburger

Thiele‐Bruhn

2020

J Soils Sediments

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Sorption/Desorption, Leaching, and Transport Behavior of Pesticides in Soils: A Review on Recent Advances and Published Scientific Research

Vagi

Petsas

2021

The Handbook of Environmental Chemistry

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Microplastics and organics – A comparative study of sorption of triclosan and malachite green onto polyethylene

Çiftçi

Türkeli

Özen

et al. 2023

Water Science &Amp; Technology

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This study aims to elucidate interaction of organics with microplastics in a comparative manner via the use of two model compounds (i.e., triclosan and malachite green) having different physicochemical properties, onto polyethylene (PE). TCS, is hydrophobic with low solubility, while MG is hydrophilic with high aqueous solubility. Kinetic studies indicate faster sorption (teq = 24 h) and equilibrium studies show much higher capacity (qe = 6,921 mg/g) for TCS, when compared to those of MG (teq = 5 d, qe = 221 mg/g). While pseudo-kinetic model fits sorption of both organics to PE, equilibrium isotherms as well as the results on effect of particle size and pH indicate dissimilar sorption mechanisms. Considering pHPZC = 2, observation of favourable sorption of TCS in acidic region and sorption being unaffected by particle size was explained by TCS sorption to be dominated by hydrophobic interactions in amorph regions of PE. Higher removal of MG was observed at lower surface charge of PE, and a clear favourable impact of surface area on MG sorptive capacity pointed to the presence of non-specific van der Waals type interactions on the surface of PE. Mechanistic evaluations presented here contribute to our understanding of interaction of MPs with organics in aquatic ecosystems.

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Evaluating Nonlinear Sorption of Four Substituted Phenols to Agriculture Soils Using Expanded Polyparameter Linear Free Energy Relationship

Cited by 3 publications

References 37 publications

Sorption of PAHs and PAH derivatives in peat soil is affected by prehydration status: the role of SOM and sorbate properties

Sorption of PAHs and PAH derivatives in peat soil is affected by prehydration status: the role of SOM and sorbate properties

Sorption/Desorption, Leaching, and Transport Behavior of Pesticides in Soils: A Review on Recent Advances and Published Scientific Research

Microplastics and organics – A comparative study of sorption of triclosan and malachite green onto polyethylene

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