حذف یون فسفات از محلول های آبی با استفاده از جلبک قهوه ای ilicifolium Sargassum به عنوان جاذب زیستی

نوع مقاله : مقاله کامل علمی ترویجی

نویسندگان

1 کارشناس بخش اکولوژی، مرکز تحقیقات شیلاتی آب‌های دور، مؤسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، چابهار، ایران

2 استادیار و عضو هیأت علمی، مرکز تحقیقات شیلاتی آب‌های دور، مؤسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، چابهار، ایران

چکیده

زمینه و هدف: یکی از مهم‌ترین آلاینده‌های غیرآلی یون فسفات است که با مقادیر متفاوتی در فاضلا‌ب‌های شهری، صنعتی و کشاورزی یافت می‌شود و امکان ورود به منابع آب‌های سطحی و زیرزمینی را دارند. امروزه جاذب‌های متنوعی برای حذف و یا برداشت مازاد این عناصر از محیط‌های آبی مورد استفاده قرار می‌گیرد. در مطالعه حاضر توان جلبک دریایی Sargassum ilicifolium به عنوان یک جاذب زیستی برای حذف یون فسفات مورد بررسی قرار گرفت. در این آزمایش دامنه متنوعی از تغییرات pH شامل (2، 3، 4، 5، 6، 7 و 8)، مقدار بیومس ابتدایی جلبک S.ilicifolium (01/0، 03/0، 05/0، 1/0، 15/0، 2/0، 3/0 و 4/0 گرم) و غلظت ابتدایی یون‌ فسفات (50، 100، 150، 200، 250، 300 و 350 میلی‌گرم در لیتر) در زمان تماس (0-60دقیقه) بر روند حذف و برداشت یون فسفات از محیط آب شور مورد بررسی قرار گرفت. سنجش غلظت فسفات با روش اسپکتروفتومتری به ترتیب در طول موج nm 890 صورت گرفت . نتایج حاصل از این آزمایش نشان داد که بیش‌ترین ظرفیت جذب فسفات توسط S. ilicifolium mg g−1 33/653 و همچنین بیش‌ترین درصد حذف فسفات توسط S. ilicifolium 79/71% به دست آمد. این نتایج در مقادیر pH 2، مقدار بیوماس جلبک g L-101/0 و غلظت اولیه فسفاتmg L-1 350 به دست آمدند. به طور کلی نتایج بدست آمده از این تحقیق نشان داد که پودرخشک جلبک S. ilicifolium قابلیت مناسبی برای حذف یون فسفات از محیط‌های آبی داشته و جاذب زیستی مناسبی برای استفاده در تصفیه فاضلاب‌های شهری و کشاورزی می‌باشد.

کلیدواژه‌ها

عنوان مقاله [English]

Study of brown algae Sargassum (Sargassum ilicifolium) biomass in bio-absorption of various concentrations of phosphate

نویسندگان [English]

  • Elnaz Erfanifar 1
  • Zahra Aminikhoei 2
1 1Ecology Expert, Education and Offshore Fisheries Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Chabahar, Iran,
2 2Assistant Prof. and Faculty of Member, Education and Offshore Fisheries Research Center, Iranian Fisheries Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Chabahar, Iran
چکیده [English]

Abstract:
One of the most important inorganic pollutants is ion phosphate, which is found in different amounts in urban, industrial and agricultural water, and it is possible to enter the surface water resources and underground water resources. Today, various adsorbents are used to remove or remove excess elements from aquatic environments. In this study, marine algae, Sargassum ilicifolium was studied as a bioabsorbent for removal of phosphor ion. In this experiment, various range of pH including (pH 2, 3, 4, 5, 6, 7 and 8), the amount of algae biomass S. ilicifolium (0.01, 0.3, 0.05, 0.1, 0.15, 0.2, 0.3 and 0.4 g) and the initial concentration of ion phosphate (50, 100, 150, 200, 250, 300 and 350 mg L -1) at contact time (0-60 minutes) on removal of phosphate ions from aqueous solution was investigated. Phosphate concentration was measured by spectrophotometric method at 890 nm wavelength. The results of this experiment showed that marine macro algae, S. ilicifolium had the best phosphate absorption capacity of 653.33 mg g-1 in the most suitable conditions, and the phosphate removal efficiency was 71.79%. The most suitable conditions for phosphate absorption were obtained at 0.01 gL -1 algae biomass, pH: 2 and 350 mg L-1 of initial phosphate concentration. The results of this study showed that the dry powder of algae, S. ilicifolium is suitable for removal of phosphate ions from aqueous solution and is an appropriate bioactive agent for urban and agricultural wastewater treatment.

کلیدواژه‌ها [English]

  • Sargassum ilicifolium
  • Seaweed Phosphate
  • Absorption bio
  • organic absorbent

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مجله بهره برداری و پرورش آبزیان
دوره 9، شماره 2
تیر 1399
صفحه 1-11

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