نوع مقاله : مقاله پژوهشی
نویسنده
استاد مدعو گروه علوم و مهندسی آب دانشگاه زنجان.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
Today, the use of chemical fertilizers is prevalent in modern agriculture, but excessive and unscientific application of these fertilizers leads to the leaching of chemical substances, resulting in the pollution of surface and groundwater. This study aimed to investigate the effect of a magnetic field on nitrate adsorption by a pumice adsorbent from nitrate solutions. The research was conducted as a factorial experiment with two factors, using a completely randomized design and three replications. A nitrate solution with a concentration of 1 gram per liter was passed through a magnetic field five times. Two fixed magnets with a magnetic field intensity of approximately 0.1 tesla were employed, arranged around a 16 mm polyethylene tube. Sampling was performed nine times over a 45-day period, and samples were analyzed using spectrophotometry at a wavelength of 470 nm. The results indicated that the average nitrate adsorbed by pumice particles in the magnetic solution was 0.3 grams per liter (12%) higher than that in the non-magnetic solution. These findings demonstrate a positive and significant effect of the magnetic field on nitrate adsorption from the solution.
کلیدواژهها [English]
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