Colección SciELO Chile

Departamento Gestión de Conocimiento, Monitoreo y Prospección
Consultas o comentarios: productividad@anid.cl
Búsqueda Publicación
Búsqueda por Tema Título, Abstract y Keywords



Evaluation of percrystallization coupled with electrodialysis for zero liquid discharge in the pulping industry
Indexado
WoS WOS:000742127700007
Scopus SCOPUS_ID:85119584580
DOI 10.1016/J.JENVMAN.2021.114104
Año 2022
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



We evaluated percrystallization at laboratory scale to determine its suitability as core technology for achieving Zero Liquid Discharge (ZLD) in a Kraft effluent desalination process. Compared with conventional evaporation/crystallization techniques, percrystallization allows to operate at room temperature and with barely pressurized fluids, using relatively unexpensive membranes and vacuum to allow evaporation of aqueous brine solutions. For further comprehension of the technology before experimentation, a computational fluid dynamics model was developed, showing how temperature affects the performance of percrystallization in terms of transmembrane flux. Additionally, we performed experiments with single and double salt solutions (NaCl and NaCl/Na2SO4) and concentrated industrial effluent from a Kraft pulp mill (brine from the effluent desalination with electrodialysis). Percrystallization of the concentrated industrial effluent was successfully achieved at laboratory scale, showing no signs of fouling on the membrane surface. However, high energy consumptions (above 3000 kWh/ton of evaporated water) were measured. Theoretical power consumptions of an optimized industrial percrystallization system were therefore computed. Percrystallization showed a more efficient performance compared with similar membrane systems, such as vacuum membrane distillation, but higher energy consumptions than conventional ZLD technologies (mechanical vapor compression), having an estimated energy consumption of around 110-150 kWh/ton of removed water, depending on the feed fluid temperature. Nevertheless, percrystallization could be suitable for ZLD applications where low-cost heating (e.g., solar) is available, since the vacuum energy demand is only 32-140 kWh/ton. Alternatively, it could be applied to low scale processes where the temperature of the solution must remain low (e.g., less than 40 degrees C).

Métricas Externas



PlumX Altmetric Dimensions

Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:

Disciplinas de Investigación



WOS
Environmental Sciences
Scopus
Sin Disciplinas
SciELO
Sin Disciplinas

Muestra la distribución de disciplinas para esta publicación.

Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



Muestra la distribución de colaboración, tanto nacional como extranjera, generada en esta publicación.


Autores - Afiliación



Ord. Autor Género Institución - País
1 Moltedo, Juan J. Hombre Bioforest SA - Chile
Universidad de Concepción - Chile
Bioforest S.A. - Chile
2 Schwarz, Alex Hombre Universidad de Concepción - Chile
3 Gonzalez-Vogel, Alvaro Hombre Bioforest SA - Chile
Bioforest S.A. - Chile

Muestra la afiliación y género (detectado) para los co-autores de la publicación.

Financiamiento



Fuente
University of Queensland
Arauco Bioforest S.A.

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
The authors are grateful with Dr. Julius Motuzas, University of Queensland, Australia, for manufacturing and supplying the hydrophobic carbonized sucrose membranes and providing general guidelines regarding this technology.
The authors are grateful with Dr. Julius Motuzas, University of Queensland, Australia, for manufacturing and supplying the hydrophobic carbonized sucrose membranes and providing general guidelines regarding this technology.
The authors are grateful with Arauco Bioforest S.A. for funding the experiments and giving the rights to use the presented results. The authors are grateful with Dr. Julius Motuzas, University of Queensland, Australia, for manufacturing and supplying the hydrophobic carbonized sucrose membranes and providing general guidelines regarding this technology.

Muestra la fuente de financiamiento declarada en la publicación.