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Removal of metals from mining wastewaters by utilization of natural and modified peat as sorbent materials |
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| Author: | Gogoi, Harshita1; Leiviskä, Tiina1; Heiderscheidt, Elisangela2; |
| Organizations: |
1University of Oulu, Chemical Process Engineering, P.O. Box 4300, FIN-90014, University of Oulu, Oulu, Finland 2University of Oulu, Water Resources and Environmental Engineering, P.O. Box 4300, FIN-90014, University of Oulu, Oulu, Finland |
| Format: | article |
| Version: | published version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 0.9 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe201708158124 |
| Language: | English |
| Published: |
Lappeenranta University of Technology,
2017
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| Publish Date: | 2017-08-15 |
| Description: |
AbstractThis study investigated metal removal efficiency of natural (N peat) and HCl treated peat (HCl peat) using batch sorption tests with real mining wastewaters. FTIR and XPS studies revealed that peat modification did not alter the structure of the sorbent. HCl peat exhihited higher maximum metal uptake capacity (22.4 mg Ni/g) than N peat (17.9 mg Ni/g). Sorbents removed arsenic most efficiently (80%, dosage 1 g/L). Optimum contact times ranged between 30–60 min. Our study revealed that although HCl peat had better settling properties, N peat displayed overall better purification performance, representing thus the most cost-effective and sustainable option. see all
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| Series: |
LUT scientific and expertise publications. Tutkimusraportit – Research Reports |
| ISSN: | 2243-3376 |
| ISSN-L: | 2243-3376 |
| ISBN: | 978-952-335-066-3 |
| ISBN Print: | 978-952-335-065-6 |
| Issue: | 63 |
| Pages: | 218 - 225 |
| Host publication: |
13th International Mine Water Association Congress - Mine Water & Circular Economy (Vol I) |
| Host publication editor: |
Wolkersdorfer, Christian Sartz, Lotta Sillanpää, Mika Häkkinen, Antti |
| Conference: |
International Mine Water Association Congress |
| Type of Publication: |
D3 Professional conference proceedings |
| Field of Science: |
218 Environmental engineering |
| Subjects: | |
| Funding: |
The study has been done as part of project “Development, Evaluation and Optimization of Measures to Reduce the Impact on the Environment from Mining Activities in Northern Regions”, funded from Interreg Nord 2014-2020 program. |
| Copyright information: |
© IMWA – International Mine Water Association 2017. Published in this repository with the kind permission of the publisher. |