RT Journal Article
T1 Application of cellulose nanofibers to remove water-based flexographic inks from wastewaters
A1 Balea Martín, Ana
A1 Monte Lara, María Concepción
A1 Fuente González, Elena de la
A1 Negro Álvarez, Carlos Manuel
A1 Blanco Suárez, María Ángeles
AB Water-based or flexographic inks in paper and plastic industries are more environmentally favourable than organic solvent-based inks. However, their use also creates new challenges because they remain dissolved in water and alter the recycling process. Conventional deinking technologies such as flotation processes do not effectively remove them. Adsorption, coagulation/flocculation, biological and membrane processes are either expensive or have negative health impacts, making the development of alternative methods necessary. Cellulose nanofibers (CNF) are biodegradable, and their structural and mechanical properties are useful for wastewater treatment. TEMPO-oxidised CNF have been evaluated for the decolourisation of wastewaters that contained copper phthalocyanine blue, carbon black and diarlyide yellow pigments. CNF in combination with a cationic polyacrylamide (cPAM) has also been tested. Jar-test methodology was used to evaluate the efficiency of the different treatments and cationic/anionic demand, turbidity and ink concentration in waters were measured. Results show that dual-component system for ink removal has a high potential as an alternative bio-based adsorbent for the removal of water-based inks. In addition, experiments varying CNF and cPAM concentrations were performed to optimise the ink-removal process. Ink concentration reductions of 100%, 87.5% and 83.3% were achieved for copper phthalocyanine blue, carbon black and diarlyide yellow pigments, respectively. Flocculation studies carried out show the decolourisation mechanism during the dual-component treatment of wastewaters containing waterbased inks.
PB Springer
SN 0944-1344
YR 2017
FD 2017
LK https://hdl.handle.net/20.500.14352/88966
UL https://hdl.handle.net/20.500.14352/88966
LA eng
NO Balea, A., Monte, M. C., de la Fuente, E., Negro, C., & Blanco, Á. (2017). Application of cellulose nanofibers to remove water-based flexographic inks from wastewaters. Environmental Science and Pollution Research, 24, 5049-5059.
NO Ministerio de Economía y Competitividad (España)
DS Docta Complutense
RD 8 abr 2025