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A simple cation exchange model to assess the competitive adsorption between the herbicide paraquat and the biocide benzalkonium chloride on montmorillonite
(Elsevier Science, 2021-02-20)
Since adsorption on clay minerals is one of the most popular water-pollutant removal method, it is important to consider the coexistence of several compounds that can affect pollutant retention. In this work, the competitive ...
Degradation of cationic surfactants using immobilized bacteria: Its effect on adsorption to activated sludge
(Elsevier Science, 2018-04-20)
Adsorption of cationic surfactants (QACs) Br-tetradecyltrimethylammonium (TTAB), Cl-tetradecylbenzyldimethylammonium (C14BDMA) and Cl-hexadecylbenzyldimethylammonium (C16BDMA) to activated sludge from a wastewater treatment ...
Adsorption Experimental and theoretical investigation of the Na+ → Li+ cation exchange in mordenite and its CO2 adsorption properties
(Springer, 2021-02)
Anthropogenic CO2 emissions are the major drivers of global warming and climate change. The adsorption of CO2 is one of the strategies to mitigate these emissions. In this sense, different materials have been used as ...
Synthesis and characterization of HDTMA-organoclays: Insights into their structural properties
(Sociedade Brasileira de Química, 2015-02)
This study aims to synthesize and characterize organoclays developed from an Argentinian montmorillonite (Bent) using hexadecyltrimethylammonium bromide (HDTMA-Br) as the intercalation agent. Subsequently, an adsorption ...
Adsorption Kinetics of a Cationic Surfactant Bearing a Two-Charged Head at the Air-Water Interface
(MDPI AG, 2020-01-22)
We studied the dynamics of adsorption at the air-water interface of a cationic surfactant bearing two charges, Gemini 12-2-12, at concentrations below and above the critical micelle concentration (cmc). We used maximum ...
Non-monotonic behavior of weak-polyelectrolytes adsorption on a cationic surface: A Monte Carlo simulation study
(Elsevier, 2021-01)
In this work, the weak polyelectrolyte (PE) adsorption on a strong cationic surface is studied with constant pH Monte Carlo simulations using a coarse-grained model. When a large number of PE chains is added to the system, ...
Norfloxacin adsorption on montmorillonite and carbon/montmorillonite hybrids: pH effects on the adsorption mechanism, and column assays
(Taylor & Francis, 2020-11-03)
The presence of norfloxacin antibiotic (NFX) in drinking water raises significant scientific concern due to the health and environmental problems that may cause. This study aimed to evaluate the NFX removal: 1) in batch ...
Tetracycline adsorption on montmorillonite: pH and ionic strength effects
(Elsevier Science, 2008-06)
The adsorption of tetracycline (TC) on a Patagonian montmorillonite is studied as a function of pH, ionic strength and TC concentration by using X-ray diffraction, UV-Visible spectroscopy, ATR-FTIR spectroscopy, batch ...
Removal of humic acid by organo-montmorillonites: Influence of surfactant loading and chain length of alkylammonium cations
(Springer, 2014-05)
In this study, the characterization and adsorption properties of montmorillonite (MMT) and organomontmorillonites with different surfactant/cationic exchange capacity (CEC) ratios (1 and 2) of tetradecyl trimethylammonium ...
Influence of Ca2+ on tetracycline adsorption on montmorillonite
(Academic Press Inc Elsevier Science, 2012-02)
The adsorption of tetracycline (TC) on montmorillonite was studied as a function of pH and Ca 2+ concentration using a batch technique complemented with X-ray diffraction and transmission electron microscopy. In the absence ...