Adsorption/Desorption Stability of TCMA-Modified Clay in Simulated Digestion Environment
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The modified clay was used for organic compounds adsorption and removal. However, desorption of the organic molecules, used for clay modification, in the real internal digestion environment of the animals is the main concern. Therefore, in this study, the adsorption/desorption studies of tri-capryl methyl ammonium chloride (TCMA)-modified clay at different cation exchange capacity (CEC) were investigated either by washing or by exposure to electrolytic solutions. The results indicated that the TCMA adsorption reaches up to 3 times the CEC of this clay. Beyond the CEC, the adsorption is accomplished by hydrophobic interaction. It is also found that the washing of clay has no effect on desorption of TCMA. Furthermore, desorption studies with stomach electrolyte solutions showed no more than 2 mg/L desorption of TCMA at acidic and neutral pH values which indicates the suitability of the TCMA clay for mycotoxin removal.
Organophilic clay was used for removal of organic molecules and mycotoxins.
Adsorption/desorption of TCMA was tested.
Adsorption of TCMA is a CEC dependent.
The washing of clay has no effect on desorption of TCMA.
With stomach electrolytes, < 2 mg/L desorption of TCMA at acidic, and neutral pH values.
KeywordsTCMA Clay Organic compounds Adsorption Desorption
The authors are gratefully thanks Particle Engineering Research Center (PERC), University of Florida, Gainesville, Florida, USA for supproting this research work.
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Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
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