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Arsenate Retention by Epipsammic Biofilms Developed on Streambed Sediments: Influence of Phosphate
المؤلفون المشاركون
Prieto, D. M.
Devesa-Rey, R.
Rubinos, D. A.
Díaz-Fierros, F.
Barral, M. T.
المصدر
العدد
المجلد 2013، العدد 2013 (31 ديسمبر/كانون الأول 2013)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2013-09-24
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
Natural geological conditions together with the impact of human activities could produce environmental problems due to high As concentrations.
The aim of this study was to assess the role of epipsammic biofilm-sediment systems onto As (V) sorption and to evaluate the effect of the presence of equimolar P concentrations on As retention.
A natural biofilm was grown on sediment samples in the laboratory, using river water as nutrient supplier.
Sorption experiments with initial As concentrations 0, 5, 25, 50, 100, 250, and 500 μg L−1 were performed.
The average percentage of As sorbed was 78.9±3.5 and 96.9±6.6% for the sediment and biofilm-sediment systems, respectively.
Phosphate decreased by 25% the As sorption capactity in the sediment devoid of biofilm, whereas no significant effect was observed in the systems with biofilm.
Freundlich, Sips, and Toth models were the best to describe experimental data.
The maximum As sorption capacity of the sediment and biofilm-sediment systems was, respectively, 6.6 and 6.8 μg g−1 and 4.5 and 7.8 μg g−1 in the presence of P.
In conclusion, epipsammic biofilms play an important role in the environmental quality of river systems, increasing As retention by the system, especially in environments where both As and P occur simultaneously.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Prieto, D. M.& Devesa-Rey, R.& Rubinos, D. A.& Díaz-Fierros, F.& Barral, M. T.. 2013. Arsenate Retention by Epipsammic Biofilms Developed on Streambed Sediments: Influence of Phosphate. BioMed Research International،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1004677
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Prieto, D. M.…[et al.]. Arsenate Retention by Epipsammic Biofilms Developed on Streambed Sediments: Influence of Phosphate. BioMed Research International No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-1004677
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Prieto, D. M.& Devesa-Rey, R.& Rubinos, D. A.& Díaz-Fierros, F.& Barral, M. T.. Arsenate Retention by Epipsammic Biofilms Developed on Streambed Sediments: Influence of Phosphate. BioMed Research International. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1004677
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1004677
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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