Cationic Surfactant Adsorption by Swelling and Nonswelling Layer Silicates

Xu, Shihe; Boyd, Stephen A.

doi:10.1021/la00007a033

Cited by 211 publications

(159 citation statements)

References 2 publications

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“…In sorption studies with ATMAC-C12, Xiang et al (2016) confirmed an increased sorption for this compound with increasing soil clay and potassium content. Zanini et al (2013) and Xu and Boyd (1995) investigated the movement of BAC and ATMAC-C16 into the interlayers of montmorillonite using x-ray diffraction. An interlayer expansion from 1.2 nm to 1.8 nm was determined, while the largest expansion was measured when the saturation of the clay's cation exchange capacity of 0.764 mmol g -1 was reached or surpassed.…”

Section: Qaac Sorption and Sequestration In Soilmentioning

confidence: 99%

Quaternary ammonium compounds in soil: implications for antibiotic resistance development

Mulder

Siemens

Sentek

et al. 2017

Rev Environ Sci Biotechnol

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Quaternary ammonium compounds (QACs) are surface-active, antimicrobial, high production volume (HPV) chemicals with a broad application in agriculture. This review provides a comprehensive overview of (1) predicted and measured concentrations of QACs in soils including their analysis, (2) sequestration mechanisms in soils based on their physicochemical properties and chemical structure, and (3) implications of concentrations and fate of QACs in soils for the proliferation of antibiotic resistance in the environment. Predicted environmental concentrations (PEC) for QACs that are applied to soils with manure are in the order of 3.5 mg kg -1 . Based on literature data, the median PEC of QAC in sewage sludge amended soils is 25 lg kg -1 . The positively charged QACs are mainly sorbed to clay minerals. We propose that QACs might be sequestered in the interlayer regions of layered silicates in clayrich soils, reducing their acute toxicity, while increasing their persistence. The release of sequestered QACs from soil can still potentially maintain concentration levels that are sufficient to develop antibiotic resistance in the environment.

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Section: Qaac Sorption and Sequestration In Soilmentioning

confidence: 99%

Quaternary ammonium compounds in soil: implications for antibiotic resistance development

Mulder

Siemens

Sentek

et al. 2017

Rev Environ Sci Biotechnol

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“…Considering the expandable characteristics of OMt, they may have a quite different structure after the saturation with water. In fact, some researchers have pointed out that the organic clay microstructures and surfactant orientation deduced from the organic clay powder do not represent those in aqueous medium [10,23,24]. Thereby, it is necessary to explore the structural characteristics of OMt in water.…”

Section: Introductionmentioning

confidence: 99%

Expansion characteristics of organo montmorillonites during the intercalation, aging, drying and rehydration processes: Effect of surfactant/CEC ratio

Zhu

Wang

Zhu

et al. 2011

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Cationic surfactants have a hydrophilic part made up of quaternary ammonium groups. When cationic surfactants are used in soil remediation, they adsorb at negatively charged surfaces, such as silica [33] and clays [34], but they can also adsorb at cell membranes [30]. Dimeric (twin or gemini) surfactants contain more than one hydrophobic tail and hydrophilic head.…”

Section: Synthetic Surfactantsmentioning

confidence: 99%

Use of Surfactant-Modified Zeolites and Clays for the Removal of Heavy Metals from Water

Jiménez-Castañeda

Medina

2017

Water

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Abstract:The presence of heavy metals in water for human use or consumption represents a major risk to human health. It is therefore important to find materials to remove or minimise the concentration of these pollutants. The adsorption process for the removal of heavy metals is favoured by the use of low-cost materials that exhibit a porous structure and a high cation exchange capacity, such as zeolites and clays. On the other hand, chemical treatments, e.g., using acids and bases, can modify the properties of these materials, but more recently the application of surfactants has also shown to be successful for broadening their metal affinity and allowing the removal of diverse organic and inorganic pollutants from water. This paper reviews the application of modified zeolites and clays for the removal of heavy metals from water.

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Cationic Surfactant Adsorption by Swelling and Nonswelling Layer Silicates

Cited by 211 publications

References 2 publications

Quaternary ammonium compounds in soil: implications for antibiotic resistance development

Quaternary ammonium compounds in soil: implications for antibiotic resistance development

Expansion characteristics of organo montmorillonites during the intercalation, aging, drying and rehydration processes: Effect of surfactant/CEC ratio

Use of Surfactant-Modified Zeolites and Clays for the Removal of Heavy Metals from Water

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