Natural and waste materials as metal sorbents in permeable reactive barriers (PRBs) |
| |
Authors: | Janthawan Wantanaphong Sacha Jon Mooney Elizabeth Helen Bailey |
| |
Institution: | (1) Environmental Science, School of Bioscience, University of Nottingham, University Park, Nottingham, UK, NG7 2RD |
| |
Abstract: | A range of waste products and natural materials including chitin, fly ash, clay soil, cocoa shell, calcified seaweed and the natural zeolite clinoptilolite were tested in batch experiments to assess their ability to remove metals from a synthetic groundwater containing 10 mg l–1 Cu, Pb and Zn and 1 mg l–1 Cd. All had the ability to remove more than 70% of the metals from solution with fly ash being the most efficient, then chitin, clinoptilolite, calcified seaweed, clay soil and cocoa shell. After consideration of geochemical and morphological properties, calcified seaweed and clinoptilolite were shown to have potential as barrier materials. Given current issues with regard to the longevity of zero-valent iron barriers alternative materials could be the key to the future adoption of this remediation technology. |
| |
Keywords: | Permeable reactive barriers-groundwater remediation-heavy metals-low cost sorbents |
本文献已被 SpringerLink 等数据库收录! |
|