نوع مقاله : علمی - پژوهشی

نویسندگان

گروه محیط زیست، دانشکده محیط زیست، دانشگاه ملایر، ملایر، ایران

چکیده

سابقه و هدف: آلودگی نفت پیامد اجتناب ‌ناپذیر افزایش سریع جمعیت است. استفاده ازمنابع نفتی بدون وقفه و درمقیاس بزرگ رو به افزایش بوده و از بزرگ‌ ترین دلایل آلودگی ناشی از آن است. این پژوهش آلودگی فلزات سنگین نیکل و روی در پساب مخازن نفتی پالایشگاه شازند را بررسی  می‌کند.مواد و روش­ها:نمونه‌برداری به صورت تصادفی از ۶ نوع مخزن نفتی متفاوت براساس نوع محصولات تولیدی و با ۳ تکرار در هر مخزن انجام شد. از آنجا که نمونه‌ها در ۳ فاز مجزا (آلی، آبی، آبی و آلی) نمونه‌برداری شدند، روش آنالیز مجزایی برای هر فاز به کار گرفته شد.نتایج و بحث:نتایج بررسی نمونه‌ها نشان داد میانگین غلظت فلزات نیکل و روی در پساب مخازن ذخیره به ترتیب 141/5 و 087/7  میلی‌گرم بر لیتر است. همچنین مقایسه غلظت نمونه‌ها با استانداردهای سازمان حفاظت محیط زیست آمریکا و ایران نشان داد غلظت فلز نیکل در 25% نمونه‌ها بالاتر از حد استانداردها بوده و ۷۵% آنها غلظتی معادل یا کمتر از میزان استاندارد را دربرداشتند. همچنین غلظت فلز روی نیز در۲۰% نمونه‌ها فراتر از حد مجاز استانداردها و در ۸۰% آنها نیز غلظتی معادل یا کمتر از این میزان را دارا بودند.نتیجه گیری:در نهایت، باتوجه به وضعیت بوم‌شناختی درخور توجه منطقه شازند، کنترل آلاینده‌های فلزی و پایش پساب ذخایر نفتی در این منطقه، مورد تاکید بوده که نیازمند مدیریت صحیح و به‌موقع به منظور پیش‌گیری ازافزایش آلاینده‌های حاصل ازآنها است.

کلیدواژه‌ها

عنوان مقاله [English]

Heavy metals (Nickel and Zinc) pollution of industrial waste of storage tanks and petroleum products distribution of Shazand oil refinery

نویسندگان [English]

  • Samar Mortazavi
  • Faezeh Saberinasab

Department of Environment, Faculty of Natural Resources, Malayer University, Malayer, iran

چکیده [English]

Introduction:Oil contamination is an inevitable consequence of rapid population growth. The non-stop usage of oil resources on a large-scale is increasing and it is a major cause of pollution. In the present study, nickel and zinc pollution as heavy metals found in the waste from petroleum product storage tanks was investigated.Materials and methods:Sampling was conducted randomly and from six different types of oil tanks based on the type of products manufactured, and repeated three times for each tank. Since the samples were aggregated into three different phases (organic, watery, watery and organic phases), a special method of analysis was used for each phase.Results and discussion:The results showed that the average concentrations of nickel and zinc in the waste of the storage tanks were 141.5 mg/l and 087.7 mg/l, respectively. The comparison of waste concentrations with the standards of the environmental protection agencies of America and Iran showed that, in 25% of samples, the nickel concentration is higher than the standards while 75% of samples have the equal or smaller nickel concentration. Also, the Zinc concentration was higher than the standards in 20% of samples.Conclusion:Finally, with regard to the importance of the ecological status of the Shazand area, control of heavy metal pollution and monitoring of waste oil reserves in the region is emphasized, which requires accurate and timely management in order to prevent an increase in these pollutants.

کلیدواژه‌ها [English]

  • Heavy metals- waste oil- Shazand oil refinery

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