University of Oulu

Gogoi, Harshita; Leiviskä, Tiina; Heiderscheidt, Elisangela; Postila, Heini; Tanskanen, Juha (2017): Removal of Metals from Mining Wastewaters by Utilization of Natural and Modified Peat as Sorbent Materials. – In: Wolkersdorfer, C.; Sartz, L.; Sillanpää, M. & Häkkinen, A.: Mine Water & Circular Economy (Vol I). – p. 218 – 226; Lappeenranta, Finland (Lappeenranta University of Technology).

Removal of metals from mining wastewaters by utilization of natural and modified peat as sorbent materials

Saved in:
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
Publish Date: 2017-08-15
Description:

Abstract

This 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

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.