Removal Efficiency of Herbicide Simazine from Water Using Eutectic Solvents
Disciplines
Environmental Chemistry
Abstract (300 words maximum)
Traditional solvents are one component solvents, and they are toxic, expensive, and not biodegradable and environmentally friendly. However, the deep eutectic solvents (DESs) contain two components, interact non-covalently and thereby the melting point is decreased. DES’s are biodegradable, cost-effective, and less toxic than traditional organic solvents used for extraction. These characteristics make DESs more sustainable alternative to other solvents. DES’s may therefore be a great option for the removal of contaminants (e.g. pesticides) from water. Simazine, a pesticide used on many crops to control weeds, is sparingly soluble in water and can therefore persist in the environment. The presence of Simazine in water can be an issue, as Simazine is a known endocrine disruptor, posing a threat to humans and animals. The aim of this research is to synthesize a variety of DES solutions and measure their removal efficiencies of simazine from water. First, a series of different DES’s were synthesized. These include Menthol: Thymol, Menthol:Camphor, Thymol:Camphor, Menthol:Octanoic Acid, Menthol:Oleic Acid, Choline Chloride:Urea, and Menthol:Lauric Acid. The IR of each DES and their individual constituents were taken using a Thermo Scientific ATR-FTIR spectrometer to confirm DES formation. Next, serial dilutions ranging from 32 μM to 500 μM were created to generate a calibration curve using LCMS. A 100 μM solution of Simazine was then prepared and combined with a DES to remove the pesticides from water. This was done for each DES previously synthesized. The DES-Simazine mixtures were stirred for one hour at 600 rpm and then centrifuged for 30 minutes. The LCMS intensity was used to determine the concentration of Simazine left in the aqueous layer and thereby calculate the DES’s extraction efficiencies. Among all DESs, Menthol:Camphor demonstrated the highest extraction efficiency of 99.5%. and Choline Chloride:Urea did not extract Simazine from water.
Use of AI Disclaimer
no
Academic department under which the project should be listed
CSM – Chemistry and Biochemistry
Primary Investigator (PI) Name
Mohammad Halim
Removal Efficiency of Herbicide Simazine from Water Using Eutectic Solvents
Traditional solvents are one component solvents, and they are toxic, expensive, and not biodegradable and environmentally friendly. However, the deep eutectic solvents (DESs) contain two components, interact non-covalently and thereby the melting point is decreased. DES’s are biodegradable, cost-effective, and less toxic than traditional organic solvents used for extraction. These characteristics make DESs more sustainable alternative to other solvents. DES’s may therefore be a great option for the removal of contaminants (e.g. pesticides) from water. Simazine, a pesticide used on many crops to control weeds, is sparingly soluble in water and can therefore persist in the environment. The presence of Simazine in water can be an issue, as Simazine is a known endocrine disruptor, posing a threat to humans and animals. The aim of this research is to synthesize a variety of DES solutions and measure their removal efficiencies of simazine from water. First, a series of different DES’s were synthesized. These include Menthol: Thymol, Menthol:Camphor, Thymol:Camphor, Menthol:Octanoic Acid, Menthol:Oleic Acid, Choline Chloride:Urea, and Menthol:Lauric Acid. The IR of each DES and their individual constituents were taken using a Thermo Scientific ATR-FTIR spectrometer to confirm DES formation. Next, serial dilutions ranging from 32 μM to 500 μM were created to generate a calibration curve using LCMS. A 100 μM solution of Simazine was then prepared and combined with a DES to remove the pesticides from water. This was done for each DES previously synthesized. The DES-Simazine mixtures were stirred for one hour at 600 rpm and then centrifuged for 30 minutes. The LCMS intensity was used to determine the concentration of Simazine left in the aqueous layer and thereby calculate the DES’s extraction efficiencies. Among all DESs, Menthol:Camphor demonstrated the highest extraction efficiency of 99.5%. and Choline Chloride:Urea did not extract Simazine from water.