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بررسی و معرفی گونههای گیاهی در روند پالایش خاک اراضی آلوده به فلزات سنگین ناشی از آبیاری با آبهای خاکستری | ||
نشریه علمی - پژوهشی مرتع و آبخیزداری | ||
مقاله 5، دوره 71، شماره 3، آذر 1397، صفحه 629-643 اصل مقاله (994.19 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/jrwm.2018.257237.1260 | ||
نویسندگان | ||
رضا حامدمقدم سالاری1؛ عباسعلی قزل سوفلو* 2؛ میلاد ایرانشاهی3 | ||
1دانشجوی کارشناسی ارشد، عمران سازه هیدرولیکی، دانشگاه آزاد اسلامی، مشهد | ||
2استادیار گروه عمران، دانشگاه آزاد اسلامی، مشهد | ||
3استادیار گروه فارماکوگنوزی دانشکده داروسازی، دانشگاه علوم پزشکی مشهد، ایران | ||
چکیده | ||
هدف از این مطالعه بررسی پتانسیل برخی گیاهان برای گیاهپالایی خاک آلوده به فلزات سرب، روی، کادمیوم و مس میباشد. برای انجام این مطالعه چهار گونۀ گیاهی بومادران (Achillea millefolium)، آگروپایرون (Agropyron elongatum)، بوفالوگرس (Bouteloua dactyloides) و آرتمیزیا (Artemisia sieberi) کشت شدند و نمونههای گیاهی با پساب تصفیهخانه آبیاری شدند. نتایج نشان داد در مورد گیاهان، سه گیاه B. dactyloides، A. sieberi، A. millefolium انتقال دهندۀ خوب فلزات به اندامهای هوایی خود میباشند که مناسب برای استخراج گیاهی (مهمترین تکنیک گیاهپالایی) هستند. گونۀ A. elongatum فلزات مس و سرب را بیشتر در ریشه تجمع میدهد. این خصوصیت مناسب فنآوری تثبیت گیاهی میباشد. همچنین توانایی چهار گونۀ گیاهی جهت گیاهپالایی، به شرح زیر است: B. dactyloides < A. millefolium < A. sieberi = A. elongatum. گیاه B. dactyloides جهت گیاهپالایی هر چهار فلز سنگین مناسب میباشد. برای گیاه B. dactyloides مقدار فاکتور انتقال گیاهی (TF) در فلزات روی، مس، سرب و کادمیوم به ترتیب: 17/1 و 09/1 و 02/1 و 41/1 و مقدار فاکتور غلظت فلز (BCF) برای آن در فلزات فوق به ترتیب: 77/1 و 22/1 و 95/0 و 37/1 میباشد. با توجه به اینکه گیاه B. dactyloides تحمل بالایی نسبت به خشکسالی و دمای بالا دارد و همچنین مناسب جهت چمنکاری میباشد، پیشنهاد میشود از این گونه جهت گیاهپالایی خاکهای آلوده به فلزات سنگین مناطق آلوده و همچنین چمنکاری استفاده گردد که علاوه بر پاکسازی خاک از فلزات سنگین و مناسب بودن با آبوهوای بومی بسیاری از مناطق ایران و نیاز کم به آبیاری، به زیبایی بصری محیط هم کمک میکند. | ||
کلیدواژهها | ||
گیاهپالایی؛ فلزات سنگین؛ بومادران؛ آگروپایرون؛ بوفالوگرس؛ آرتمیزا | ||
عنوان مقاله [English] | ||
Examining and introducing plant species in the process of soil refining of lands contaminated with heavy metals by irrigation with gray watersr | ||
نویسندگان [English] | ||
reza hamed moghadam salari1؛ Abbas Ali Ghezelsofloo2؛ milad Iranshahy3 | ||
1civil Eng. Department, Islamic Azad University of Mashhad | ||
2Assistant professor, civil Eng. Department, Islamic Azad University of Mashhad,iran | ||
3Department of Pharmacognosy, School of Pharmacy,Mashhad University of Medical Sciences, Mashhad, Iran | ||
چکیده [English] | ||
The purpose of this study is to investigate the potential of some plants for Phytoremediation of soil contaminated with lead, zinc, cadmium and copper. To do this, four plant species of Achillea millefolium, Agropyron elongatum, Bouteloua dactyloides and Artemisia sieberi were cultivated and plant samples were irrigated with refinery wastewater. The results showed that in terms of plants, Bouteloua dactyloides, Artemisia sieberi and Achillea millefolium are good transfer of metals to their aerial parts which is suitable for plant extraction (the most important technique of Phytoremediation). Agropyron elongatum mostly accumulates copper and lead metals in the root. This is a proper feature of phytostabilization. Also the capability of these four plants species for Phytoremediation is as follows: Bouteloua dactyloides> of Achillea millefolium> Artemisia sieberi = Agropyron elongatum. Bouteloua dactyloides is proper for Phytoremediation of all heavy metals. For Bouteloua dactyloides, plant transfer factor (TF) in metals: zinc, copper, lead and cadmium is 1.17 and 1.9, 1.12 and 1.41, respectively, and bio concentration factor (BCF) for that in these metals are 1.77 and 1.22, 0.95 and 1.37, respectively. Since Bouteloua dactyloides has high tolerance to drought and high temperatures and is also suitable for lawn making, it is suggested that this type of species is used for Phytoremediation of soils contaminated with heavy metals in polluted areas as well as lawn making so that in addition to soil cleansing from heavy metals and being proper with native climates in many parts of Iran and having low irrigation requirements. | ||
کلیدواژهها [English] | ||
Achillea millefolium, Agropyron elongatum, Artemisia sieberi, Bouteloua dactyloides, Heavy metals, Phytoremediation | ||
مراجع | ||
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