توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Controlled release of nitrate fertilizers by using acrylate–zeolite Nano–Composite to prevent underground water pollution
نویسنده(ها): ، ، ،
اطلاعات انتشار: اولین کنفرانس بین المللی تصفیه فاضلاب و بازیافت آب، فناوری ها و یافته های نو، سال
تعداد صفحات: ۷
Production of agriculture products is significantly depended on water and fertilizers. Nitrogen which is existed in fertilizers is one the most important nutrient for plants growing. However, nitrogen washes in form of nitrate in farms leads to pollution of underground water. Slow or controlled release of fertilizer technology can be appropriate solution of this problem and can decrease environmental pollution considerably. In this method by leaching of active substances underground water pollution is prevented. In addition nutrient is delivered to plant root gradually. In this research by synthesis of zeolite Nano–Composite with acrylate structure release behavior of potassium nitrate as a fertilizer have been studied. Since using nano–particle can leads to increase water adsorption and improve release behavior in system, Y–type Nano–Zeolite is used as the dispersed component. Various amounts of acrylate monomers have been studied. Finally, advantages of this technology and prevention of surface\underground water pollution are investigated.<\div>

۲Removal of methylene blue dye from wastewaters by absorption on to sIPN hydrogels composed of poly (Acrylamide–co–Acrylicacid)and poly vinyl alcohol
نویسنده(ها): ، ، ،
اطلاعات انتشار: اولین کنفرانس بین المللی تصفیه فاضلاب و بازیافت آب، فناوری ها و یافته های نو، سال
تعداد صفحات: ۷
Dye removal from wastewater has received considerable attention with several classes of dye being investigated. Methylene blue (MB) has wide applications. It can cause some harmful effects in humans. The use of clean methods of low–priced and biodegradable absorbents could be a good tool to minimize the environmental impact caused by manufacturing and textile effluents.The present study deals with the preparation of a novel sIPN (semi interpenetrating) hydrogel composed of copolymer of Acryl amide and Acrylic acid with poly vinyl alcohol as linear polymer there in.The adsorption abilities of hydrogels with different molar ratios for removal of MB from aqueous solutions were investigated. A weighed quantity of dry hybrid hydrogel were immersed in 50 ppm MB solution and kept at 37o C. The amount of MB adsorbed was measured spectrophotometrically [Formula] in periodically taken solution samples.The maximum dye absorption concentration for hydrogel composites 95% interestingly,it wasn't observeb any dye desorption of MB polymer solutions.Then the composites can be used as good membranes for removal of cationic dyes from aquwous solution while they won't release harmful materials in water.<\div>
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