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Assessment and Modeling of Nanofiltration of Acid Mine Drainage
- Source :
- Industrial & Engineering Chemistry Research. 57:14727-14739
- Publication Year :
- 2018
- Publisher :
- American Chemical Society (ACS), 2018.
-
Abstract
- The main objective of the present investigation was to analyze, evaluate, and model the behavior in the treatment of real acid mine drainage (AMD) with commercial spiral-wound nanofiltration membranes (NF270 and NF90). Both membranes showed operational differences regarding the effect of pH, temperature, continuous operation, concentration polarization, and fouling. Both NF90 and NF270 presented a high rejection of divalent ions (∼100%); however, NF90 showed a greater fouling with AMD. Adjustment of pH in the continuous tests reduced the precipitation of aluminum, and gypsum was identified as the main compound generating a significant decrease in the permeate flow in the membrane. The Spliegler–Kedem model was used to represent rejection and permeate flows, identifying the contribution of convective and diffusive transport in both membranes with a good fit of the model. The results obtained represent important information for a future industrial application to the treatment of AMD by means of commercial N...
- Subjects :
- Gypsum
Fouling
Continuous operation
General Chemical Engineering
02 engineering and technology
General Chemistry
010501 environmental sciences
engineering.material
Permeation
021001 nanoscience & nanotechnology
Acid mine drainage
Pulp and paper industry
01 natural sciences
Industrial and Manufacturing Engineering
Membrane
engineering
Environmental science
Nanofiltration
0210 nano-technology
0105 earth and related environmental sciences
Concentration polarization
Subjects
Details
- ISSN :
- 15205045 and 08885885
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- Industrial & Engineering Chemistry Research
- Accession number :
- edsair.doi...........88736cc0dcad59d0699887725b37ecf7