A Successive Application Approach for Effective Utilization of Three Aquatic Plants in Arsenic Removal

详细信息    查看全文

• 作者：Poonam ; Munish Kumar Upadhyay ; Ambedkar Gautam…
• 关键词：Arsenic ; Ceratophyllum ; Hydrilla ; Lemna ; Phytoremediation ; Successive application
• 刊名：Water, Air, & Soil Pollution
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：228
• 期：2
• 全文大小：
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment, general; Water Quality/Water Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Soil Science & Conservation; Hydrogeology; Climate Change/Climate Change Impacts;
• 出版者：Springer International Publishing
• ISSN：1573-2932
• 卷排序：228

文摘

In the present study, the performance of three selected aquatic plants [Hydrilla verticillata (H), Ceratophyllum demersum (C), and Lemna minor (L)] was evaluated for As removal from water when used in a successive application approach. The plants were subjected to 4 L of As-containing Hoagland medium (500 and 2500 μg L−1 as low and high exposure, respectively) for a period of 21 days in slots of 7 days each. The results showed that total As removal in 21 days varied in different combinations. The best combination was HCL showing 27 and 18% As removal in low and high As treatments, respectively, followed by HLC (21 and 16%), and LCH (15% and 12%). The lowest As removal was achieved by LHC and CLH combination in low As treatment (11%) and by CLH in high As treatment (6%). Individual plant exhibited different removal potential from combination to combination and from application at various stages. The contribution of Hydrilla varied from 8 to 52%, Ceratophyllum from 18 to 64% and Lemna from 18 to 66%. The study advocates the combination of Hydrilla-Ceratophyllum-Lemna for achieving the maximum As removal in the same period.