Study on Arsenic Removal in the Simulating Constructed Wetland

Abstract:

Arsenic concentration changes in small-scale simulating constructed wetland composed with shale ceramic, zeolite, quartz sand and Pteris vittata were examined. During arsenic removal by the constructed wetlands, arsenic interception by the natural media played the main role in the early stage and Pteris vittata uptake played the key role for arsenic removal in the later stable stage. When As (III) concentration in inflow was about 1 mg/L, the arsenic removal ratio by the two was between 22.2% and 66.6% and kept about 33% in the end. Arsenic average content in fronds and roots of Pteris vittata after experiments were respectively 17610 and 2491 mg/kg. Transfer factor was 7.08. Compared with batch tests, arsenic content accumulated in plants increased significantly.

• Periodical: Advanced Materials Research (Volume 777)
• Pages: 386-389
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.777.386
• Online since: September 2013
• Authors: Jun Ying Zhao, Hua Ming Guo
• Keywords: Arsenic, Pteris vittata L., Simulating Constructed Wetland

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