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Preliminary Investigation of Various Low-cost Organic and Inorganic Materials for Carbendazim Sorption – Advantages, Disadvantages and Significance of pH
Summary
Scientists tested cheap, natural materials to remove carbendazim—a common fungicide that contaminates drinking water—and found that modified zeolite (a natural mineral) removed up to 99% of the chemical from water. This matters because carbendazim from farm runoff often ends up in our water supply, and these findings could lead to affordable water treatment methods using materials like fruit pits and natural minerals. The research is still preliminary, but it offers hope for communities dealing with pesticide-contaminated water sources.
Carbendazim, a widely used fungicide, is frequently detected in agricultural runoff and in surface and groundwater, raising environmental and public health concerns.The efficient removal of carbendazim from water sources remains a significant challenge, especially at different pH conditions.This study evaluates the sorption performance of several organic and inorganic materials for the removal of carbendazim ( 1 mg l -1 ) from aqueous solutions across a pH range of 3-6.A series of batch experiments was conducted using fruit-processing by-products (olive, cherry, and sour cherry pits) and various zeolite samples (natural zeolite clinoptilolite and its modified forms enriched with sodium, iron or sulphur).The results showed that only sodium-rich natural zeolite and sour cherry pits achieved notable removal efficiencies.Sodium-rich natural zeolite exhibited maximum performance of up to 99.0 % at pH o = 3.02, while sour cherry pits achieved 58.4 % efficiency at pH o = 5.81.The findings demonstrate that both sorbent type and solution pH are key factors affecting carbendazim removal.These findings provide a basis for the development of optimised, pH-sensitive sorption-based treatment strategies for pesticide-contaminated waters using environmentally friendly and readily available materials.
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