نشریه محیط زیست طبیعی

ارزیابی خصوصیات گیاه‌پالایی اطلسی مکزیکی، شاه‌پسند و اسطوخودوس در تیمار آبیاری با پساب فولاد: مطالعة موردی فولاد غدیر

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه محیط زیست، دانشکده کشاورزی و منابع طبیعی، دانشگاه اردکان، اردکان، ایران

2 گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه اردکان، اردکان، ایران

چکیده

امروزه استفاده از گیاهان متحمل به تنش‌های محیطی در فضای سبز مناطق گرم و خشک امری ضروری است. یکی از مهم­ترین تنش ­ها، کیفیت آب آبیاری می­ باشد. این تحقیق با هدف بررسی خصوصیات فیزیولوژیکی و گیاه‌پالایی گیاهان آبیاری شده با پساب فولاد انجام شد. این پژوهش به‌صورت آزمایش فاکتوریل در قالب طرح کاملاً تصادفی با 12 تیمار و سه تکرار اجرا شد. تیمارهای آزمایشی شامل 1- آب آبیاری رایج فضای سبز 2- 50% اختلاط آب آبیاری رایج فضای سبز و پساب 3- پساب کامل 4- آب مخلوط (آب آبیاری رایج فضای سبز، پساب و پساب سختی‌گیر رزینی) می­ باشند. گیاهان مورد استفاده شامل اطلسی مکزیکی، شاه‌پسند و اسطوخودوس می­ باشند که همگی هم‌اندازه بودند. صفات مورد بررسی شامل اندازه­ گیری میزان فنل و آنتی‌اکسیدان که با دستگاه اسپکتروفتومتر انجام شد. برای ارزیابی توان گیاه‌پالایی، فاکتور انتقال، ضریب جذب زیستی و فاکتور غلظت زیستی نیز بررسی گردید. نتایج تجزیه واریانس داده‌ها نشان داد که تأثیر نوع آب بر ضریب جذب زیستی کادمیوم معنی‌دار نبوده ولی بر بقیه شاخص‌ها اختلاف معنی ­داری نشان داده است. همچنین نوع گیاه و برهمکنش نوع آب و نوع گیاه هم بر تمام شاخص‌ها در سطح 5 درصد معنی‌دار بود. نتایح نشان داد تیمار برهمکنش گیاه شاه‌پسند در آب خام رایج، تیمار 50% اختلاط آب خام رایج و پساب و تیمار پساب کامل و برهمکنش اسطوخودوس در 50% اختلاط آب خام رایج و پساب و تیمار آب مخلوط برای گیاه‌پالایی کادمیوم مناسب می‌باشند. اثر متقابل اطلسی مکزیکی با تیمار آب خام رایج برای گیاه‌پالایی سرب مناسب می‌باشد. با توجه به محدودة ضریب جذب زیستی، همة گیاهان مورد بررسی انباشت‌کننده نسبتاً مناسبی برای فلز کادمیوم و سرب ‌هستند.

کلیدواژه‌ها

عنوان مقاله [English]

Evaluation of phytoremediation traits of Ruellia tweediana, Lantana camara and Lavandula angustifolia in irrigation with steel effluent: A case study: Ghadir Steel

نویسندگان [English]

  • Sima Dehghani Ahmadabadi 1
  • Heidar Meftahizade 2
  • Gholamreza Siyahati Ardakani 1
  • Mostafa Shirmardi 2

1 Department of Environmental Sciences, Faculty of Agriculture & Natural Resources, Ardakan University, Ardakan, Iran

2 Department of Horticultural Science. Faculty of Agriculture & Natural Resources, Ardakan University, Ardakan, Iran

چکیده [English]

Today, the use of plants tolerant of environmental stresses in the greenbelt of hot and dry areas is essential. One of the most important stresses is the quality of irrigation water. The aim of this study was to investigate the physiological and phytoremediation characteristics of plants irrigated with steel wastewater. The design was implemented in a completely random design with twelve different treatment combinations. Experimental treatments include 1- common greenbelt irrigation water, 2- 50% mixing of common greenbelt irrigation water and wastewater, 3- complete waste water and 4- mixed water (common greenbelt irrigation water, wastewater and wastewater of softener resin in equal proportion). Plants used, including Ruellia tweediana, Lantana camara, and Lavandula angustifolia, all of which were the same size, were planted in pots. The studied traits included measuring phenols and antioxidants by spectrophotometer. To evaluate the potential of plants for phytoremediation, transfer factor, biological absorption coefficient and bio-concentration factor were also studied. The results of variance analysis showed that the effect of water type on the biological absorption coefficient of cadmium was not significant but showed a significant difference on other indices. Also, plant type and interaction between water type and plant type were significant on all indicators at the level of 5%. The interaction of Ruellia tweediana plant with common greenbelt irrigation water treatment, 50% mixing of common greenbelt irrigation and wastewater and complete wastewater treatment and Lavandula angustifolia (50% mixing of common greenbelt irrigation water and wastewater and mixed water treatment) are suitable for cadmium phytoremediation. Due to the range of biological absorption coefficient (0.1-1), all plants are medium accumulators for cadmium and lead.

کلیدواژه‌ها [English]

  • Translocation factor
  • Biological absorption coefficient
  • Bio concentration factor
  • Ghadir steel
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نشریه محیط زیست طبیعی
دوره 75، شماره 2 - شماره پیاپی 2
تیر 1401
صفحه 277-290