Adsorption and removal fenitrothion by AE-MOF UiO-66 as absorbent
Vahid Ashouria - Kourosh Adib
Vahid Ashouria - Kourosh Adib
Department of Chemistry, Faculty of Basic Sciences, Imam Hossein University, Tehran Iran - Department of Chemistry, Faculty of Basic Sciences, Imam Hossein University, Tehran Iran
زبان مقاله : انگلیسی |
تعداد صفحات مقاله : 1 صفحه |
نوع مقاله : چکیده |
ISC کد مقاله در : ISC4026_524577
چکیده
Pesticides are widely used in the agriculture and household in many countries to control and reduce pest populations. Unfortunately published reports represent due to improper use of pesticides by farmers that cause the total amount of pesticides used in agriculture is increasing. As a result of the large quantities and inappropriate use of the pesticides, they are present in all areas of the natural environment. Organophosphorous pesticides (OPPs) are one class of pesticides, which are extensively used as insecticides to increase the agricultural production [1]. Therefore, to ensure that environmental water is safe for consumer’s health or any current use, the maximum residue limit (MRL) should be controlled. It has become a global necessity to efficiently decontaminate OPPs with minimal environmental impact. Over the past decade, metal-organic frameworks (MOFs) have been developed as a new class of solid adsorbents of eco-friendly [2]. In contrast to classical solid adsorbents such as zeolites, activated carbon and silica Materials, MOFs by versatile framework compositions, tunable pore sizes, exposed active sites, thermal and chemical stability [3-4] as an appropriate candidate is for removal of toxic hazardous substances such as fenitrothion. But the powdery form, too soft, sticky and not maintaining the structure of most of the MOFs when removing guest molecules from the framework, causes problems were in adsorbent transfer and adsorbent adsorption and retrieval methods. Shaping the adsorbent with the appropriate particle size and density is a practical prerequisite. Also a key aspect to the realization of high porosity is the removal of guest molecules from the framework while still maintaining its structural integrity (i.e., “activation”). This contribution highlights the strategies utilized to date for activating MOFs. The synthesis was performed using terephthalic acid and ZrCl4 were dissolved in DMF in 120 ◦C for 24 h and it was activated using cyclohexane. Then The amount from powderactivation of MOF Uio-66 with binder was mixed and extrusion was performed using laboratory syringe equipment with a nozzle diameter of 0.1 mm. Adsorption of fenitrothion as one common pesticide on AE-MOF UiO-66 was investigated. The molecular structure of pesticide is shown in Figure. In this research, for the first time AE-MOF UiO-66 was used as absorbent at adsorption process of fenitrothion. Various factors affecting the developed adsorption procedure such as sample pH, amount of adsorbent, contact time and sample concentration were studied. All optimization steps were done at 10-4 mol L˗1 concentration level of fenitrothion. These results indicate that AE MOF UiO-66 is effective adsorbents for use in absorption and removal of fenitrothion. In addition, it can be referred to as a green chemistry process to be used in the pesticide removal industry with added value related to environmental issues.کليدواژه ها
Metal-Organic Farmework, Absorbent, Fenitrothion, Removal, Exstrusionنحوه استناد به مقاله
در صورتی که می خواهید در اثر پژوهشی خود به این مقاله ارجاع دهید، به سادگی می توانید از عبارت زیر در بخش منابع و مراجع استفاده نمایید:Ashouria , Vahid , 1398 , Adsorption and removal fenitrothion by AE-MOF UiO-66 as absorbent , دومین کنفرانس ملی کاتالیست انجمن شیمی ایران
انتشار دهنده
محل انتشار : دومین کنفرانس ملی کاتالیست انجمن شیمی ایرانمشخصات برگزارکننده همایش : دانشگاه خوارزمي
تعداد مقالات : 215
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