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Updated: Jan 26, 2026

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
Published on: May 15, 2017
Removal of pirimicarb from agricultural waste water using cellulose acetate-modified ionic liquid membrane
Sana Zulfiqar1, Uzaira Rafique2, Muhammad Javed Akhtar3
1Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpindi, Pakistan. sanazulfiqar@fjwu.edu.pk.
Abstract:
Insecticide spray in fruit gardens is a very common practice in different districts of Pakistan. These toxic sprays not only deteriorate the taste of fruit but also due to wet deposition travel through soil, they reach groundwater via leaching process. In the present study, imidazolium-based ionic liquid ([C2im][C3H6NH2]Br-) and its cellulose acetate-supported membrane ([CA-C2im][C3H6NH2]Br-) was prepared and characterized using FTIR, XRD, and SEM. These materials are used as adsorbents for the removal of "Pirimicarb" (an insecticide from waste water). A closed batch at varying parameters, i.e., concentration and temperature as function of time, was conducted on UV-Vis spectrophotometer. Comparison of removal capacity exposed better (74%) adsorption trend by CA-IL membrane than ionic liquid (68%). Thermodynamic studies projected spontaneous process (-ΔG), favoring endothermic reaction (ΔH, ΔS). Kinetics supported pseudo-second order reaction while fitness of isothermic models (Langmuir, Freundlich, Temkin) proposed multistep intraparticle diffusion process.
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