| Title |
Pilot studies on circular economy solution for the coal mining sector |
| ID_Doc |
28515 |
| Authors |
Mitko, K; Turek, M; Jaroszek, H; Bernacka, E; Sambor, M; Skóra, P; Dydo, P |
| Title |
Pilot studies on circular economy solution for the coal mining sector |
| Year |
2021 |
| Published |
|
| DOI |
10.1016/j.wri.2021.100161 |
| Abstract |
The coal mining sector is being particularly affected by the saline waste waters problem. One of the possible solutions is to use the effluents as the source of raw materials: demineralized water, salt, magnesium hydroxide. This paper presents the results obtained in a pilot plant of capacity of 400 L/h, which was in operation for 9 months in the "Boleslaw ' Smialy" coal mine in Laziska Gorne, Poland. The coal mine water was being pre-treated with ultrafiltration and decarbonization and subjected to a two-pass nanofiltration, which splits the feed into two streams: salt-rich permeate, and calcium- and magnesium-rich retentate, which can be used for recovery of magnesium hydroxide by either conventional precipitation or by CrIEM technology. The nanofiltration permeate was concentrated in a hybrid reverse osmosis-electrodialysis system, producing demineralized water and highly saline concentrate, which could be used as a feedstock for salt production by either thermal crystallization or eutectic freeze crystallization. |
| Author Keywords |
Coal mine waters; Integrated membrane systems; Resource recovery |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000713306000001 |
| WoS Category |
Water Resources |
| Research Area |
Water Resources |
| PDF |
https://doi.org/10.1016/j.wri.2021.100161
|