Abstract
Simazine and propazine are selective triazine herbicides currently in use to control broad-leaved weeds and annual grasses around the world. Bisphenol A (BPA) is an industrial chemical used in the production of polycarbonate plastics often found in consumer goods, such as plastic containers, baby bottles etc. These synthetic compounds are known to increase the risk of cancer, cause adverse reproductive effect in reptiles, mammals, birds, humans, and lead to other health problems. They have become some of the principal agents of contamination in water bodies around the world through herbicide runoff, industrial waste and leaching. Some triazines such as atrazine are banned in most European countries for over ten years due to their adverse reproductive effect in mammals, birds and humans; however propazine and simazine are still in use around the world. The removal of these compounds from contaminated water is an exigent challenge. In this study, we investigated their affinity for the surface of nanoparticles (NPS) and standard metallic oxides in an effort to exploit the unique potential applications of NPS for water purification systems. We studied the adsorption of the two triazines and BPA on the surface of NPS of iron (III) oxide, NPS of carbon, bulk iron (III) oxide and aluminum oxide at pH 6 and pH 8 using UV-Visible spectroscopy. Result indicates that these compounds have different affinity towards the surface of metallic oxides and carbon at various pHs. In general, there is relatively high adsorption of some of these compounds on the surface of NPS compared to bulk particles. NPS of carbon have shown the highest affinity for all the three compounds. The lower pH was found to be favorable for all of the compounds except for BPA. BPA have shown high adsorption at pH 8 than at pH 6.
Highlights
Surface, ground and drinking water contamination by various synthetic chemicals such as herbicides, pesticides, insecticides as well as other industrial chemicals has been a major problem throughout the world [1]-[10]
Some triazines such as atrazine are banned in most European countries for over ten years due to their adverse reproductive effect in mammals, birds and humans; propazine and simazine are still in use around the world
We studied the adsorption of the two triazines and Bisphenol A (BPA) on the surface of NPS of iron (III) oxide, NPS of carbon, bulk iron (III) oxide and aluminum oxide at pH 6 and pH 8 using UV-Visible spectroscopy
Summary
Ground and drinking water contamination by various synthetic chemicals such as herbicides, pesticides, insecticides as well as other industrial chemicals has been a major problem throughout the world [1]-[10]. Triazines are wide-spectrum pesticides used to control broad-leaved weeds and annual grassy weeds Some triazines such as atrazine are banned in most European countries for more than ten years due to their presence in water system at high concentration which may have adverse reproductive effect in mammals, birds and humans. BPA is a source of water contamination that is known to enter water systems through leaching, direct waste disposal of consumer goods and from industrial waste It has been detected in ground water, surface and drinking water [26] [27] [28] [29] [30]. It has been linked to prostate, breast cancer, birth defects, miscarriages, and many other conditions [31]-[43] The removal of these compounds from contaminated water has become a challenge and needs a unique approach. In order to achieve these goal adsorption batch experiments were performed with 0.4 g/L of NPS of Fe2O3, NPS of carbon, regular Fe2O3, or regular Al2O3 at pH 6 and pH 8 and UV-Visible spectroscopy was used to determine surface adsorption
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
