Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 193-198 |
| Number of pages | 6 |
| Journal | Mine Water and the Environment |
| Volume | 36 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Jun 2017 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- microfiltration
- nanofiltration
- neutralizing pond water
- real-time measurements
- reverse osmosis
- scaling
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Experimental Aspects of Scaling Control in Membrane Filtration of Mine Water. / Kyllönen, Hanna (Corresponding Author); Grönroos, Antti; Järvelä, Eliisa; Heikkinen, Juha; Tang, Chuyang.
In: Mine Water and the Environment, Vol. 36, No. 2, 01.06.2017, p. 193-198.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Experimental Aspects of Scaling Control in Membrane Filtration of Mine Water
AU - Kyllönen, Hanna
AU - Grönroos, Antti
AU - Järvelä, Eliisa
AU - Heikkinen, Juha
AU - Tang, Chuyang
N1 - ISI: WATER RESOURCES
PY - 2017/6/1
Y1 - 2017/6/1
N2 - This study focused on membrane filtration of neutralized pond water, which may be necessary when good quality water is required for hydrometallurgical processes. Neutralized mine water can still have fairly high metal and sulphate levels, which can hinder discharge and reuse possibilities. Both nanofiltration and reverse osmosis are effective in removing metals and sulphate, but scaling can be a severe problem. Microfiltration as a pre-treatment method, although meant for particle removal, seemed to decrease the amount of scalants, thus delayed scaling on the membrane surface and increasing water recovery for both nanofiltration and reverse osmosis. It is possible that the presence of particles in the feed water promoted crystal growth in the turbulent flow and caused the removal of dissolved constituents. Alternatively, supersaturation could have occurred, allowing microfiltration to remove the scalants as particles. The Liqum sensor indicated that redox values started to increase again just before scaling began due to precipitation in the supersaturated membrane concentrate solution. Thus, the sensor seemed to provide real time, in-situ, early-stage scaling warning.
AB - This study focused on membrane filtration of neutralized pond water, which may be necessary when good quality water is required for hydrometallurgical processes. Neutralized mine water can still have fairly high metal and sulphate levels, which can hinder discharge and reuse possibilities. Both nanofiltration and reverse osmosis are effective in removing metals and sulphate, but scaling can be a severe problem. Microfiltration as a pre-treatment method, although meant for particle removal, seemed to decrease the amount of scalants, thus delayed scaling on the membrane surface and increasing water recovery for both nanofiltration and reverse osmosis. It is possible that the presence of particles in the feed water promoted crystal growth in the turbulent flow and caused the removal of dissolved constituents. Alternatively, supersaturation could have occurred, allowing microfiltration to remove the scalants as particles. The Liqum sensor indicated that redox values started to increase again just before scaling began due to precipitation in the supersaturated membrane concentrate solution. Thus, the sensor seemed to provide real time, in-situ, early-stage scaling warning.
KW - microfiltration
KW - nanofiltration
KW - neutralizing pond water
KW - real-time measurements
KW - reverse osmosis
KW - scaling
UR - http://www.scopus.com/inward/record.url?scp=84988713781&partnerID=8YFLogxK
U2 - 10.1007/s10230-016-0415-3
DO - 10.1007/s10230-016-0415-3
M3 - Article
VL - 36
SP - 193
EP - 198
JO - Mine Water and the Environment
JF - Mine Water and the Environment
SN - 1025-9112
IS - 2
ER -