بررسی کارایی گیاه سالیکورنیا اروپایی در گیاه‌پالایی نمک از محلول‌ها

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکترا، گروه مهندسی محیط زیست، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

2 استاد، دانشکده مهندسی شیمی، دانشگاه صنعتی شریف، تهران، ایران

چکیده

هالوفیت‌ها گیاهانی هستند که قادراند غلظت‌های بالای نمک را تحمل کنند. این گیاهان کاربردهای متعددی دارند که یکی از آن‌ها گیاه‌پالایی آلاینده‌های مختلف از محیط ‌زیست است. گیاه‌پالایی نمک توسط گیاهان هالوفیت اخیراً مورد توجه محققان واقع شده است. در این مقاله گیاه‌پالایی نمک از محلول‌ها با استفاده از گیاه هالوفیتی سالیکورنیا اروپایی مورد مطالعه قرارگرفت. گیاه سالیکورنیا اروپایی با استفاده از سیستم کاشت هیدروپونیک و در سه سطح شوری مختلف (هدایت الکتریکی تقریباً برابر با 2000، 6000 و 10000 میکروزیمنس بر سانتی‌متر) با زمان ماند 7 روز و با سه تکرار برای هر سطح شوری کشت داده شد و پارامترهای هدایت الکتریکی (EC)، غلظت یون‌های کلسیم، منیزیم، سدیم و کلراید و نیز نسبت جذب سدیم (SAR) قبل و بعد از تصفیه توسط گیاه مذکور اندازه‌گیری و درصدهای متوسط کاهش پارامترهای مذکور محاسبه شد. نتایج به‌دست‌آمده حاکی از آن است که این گیاه مقادیر EC را در سطوح شوری EC~2000 µs/cm ، EC~6000 µs/cm  و  EC~10000 µs/cm به ترتیب 75/16، 05/17 و 11/18 درصد، یون کلسیم را 71/28، 18/27 و 43/40 درصد، منیزیم را 64/31، 35/25 و 46/17 درصد، سدیم را 41/20، 29/17 و 89/23 درصد و کلراید را 24/23، 84/18 و 16/22 درصد کاهش داده است. براساس نتایج این تحقیق گیاه سالیکورنیا اروپایی که به‌عنوان یکی از گزینه‌های استفاده زراعی با قابلیت آبیاری توسط آب‌های شور مطرح است، می‌تواند به‌عنوان گزینه مناسبی برای گیاه‌پالایی نمک نیز مورد استفاده قرار گیرد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Efficiency of Salicornia Europea in Phytoremediation of Salt in Saline Water

نویسندگان [English]

  • Abolfazl Farzi 1
  • Mehdi Borghei 2
  • Manouchehr Vossoughi 2
1 PhD Student of Environmental Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 Prof., Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
چکیده [English]

Halophytes are plants able to tolerate high salt concentrations. Among the many applications they have found, one is the phytoremediation of pollutants from the environment. Salt phytoremediation by halophytes is a field of research that has recently attracted the attention of researchers in the field. The present study is devoted to the phytoremediation of salt using the halophytic plant Salicornia europaea. The hydroponic system was employed at three salinity levels (EC~ 2,000, 6,000, and 10,000 µs/cm) with a retention time of 7 days. Electrical Conductivity (EC) and concentrations of calcium, magnesium, sodium, and chloride ions were measured before and after treatment with S. europaea. Finally, reductions in the parameter were calculated and reported as percents. The plant was found capable of reducing EC by 16.75, 17.05, and 18.11% for calcium ion concentrations of 28.71, 27.18, and 40.43%, magnesium ion concentrations of 31.64, 25.35, and 17.46%, sodium ion concentrations of 20.41, 17.29, and 23.89%, and chloride ion concentrations of 23.24, 18.84, and 22.16% at EC~2,000, 6,000, and 10,000 µs/cm, respectively. S. europaea is a crop that can be irrigated with saline water. Based on the results of this study, it may be recommended as a potential candidate for salt phytoremediation

کلیدواژه‌ها [English]

  • Salt Phytoremediation
  • Hydroponics
  • Salinity
  • Salicornia
  • halophyte
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