RT Journal Article
T1 Bioethanol Production and Alkali Pulp Processes as Sources of Anionic Lignin Surfactants
A1 Álvarez Barajas, Rodrigo
A1 Cuadri Vega, Antonio Abad
A1 Navarro Domínguez, Francisco Javier
A1 Martínez Boza, Francisco José
AB Lignin is an abundant biopolymer with potential value-added applications that dependon biomass source and fractioning method. This work explores the use as emulsifiers of threenative lignin-rich product coming from industrial bioethanol production and alkali or Kraft pulping.In addition to their distinctive characteristics, the different molecular organization induced byemulsification pH is expected to interact in various ways at the water-oil interface of the emulsiondroplets. Initially, model oil-in-water (O/W) emulsions of a silicone oil will be studied as a function oflignin source, disperse phase concentration and emulsification pH. Once stablished the effect of suchvariables, emulsion formulations of three potential bitumen rejuvenators (waste vegetable cookingoil, recycled lubricating oil and a 160/220 penetration range soft bitumen). Droplet size distribution,Z-potential and viscous tests conducted on model emulsions have shown that emulsification pHstrongly affects stabilization ability of the lignins tested. Regarding bitumen rejuvenators, ligninemulsification capability will be affected by surfactant source, pH and, additionally, by the dispersedphase characteristics. Lower Z-potential values shown by KL at pH 9 and 11 seem to facilitateemulsification of the less polar disperse phases formed by RLUB and bitumen. In any case, lowerparticle size and higher yield stress values were found for both bioethanol-derived lignins emulsifyingRVO and RLUB at pH 13, which are expected to exhibit a longer stability
PB MDPI
SN 2073-4360 (electrónico)
YR 2021
FD 2021
LK http://hdl.handle.net/10272/20274
UL http://hdl.handle.net/10272/20274
LA eng
NO Álvarez-Barajas, R., Cuadri, A. A., Navarro, F. J., Martínez-Boza, F. J., & Partal, P. (2021). Bioethanol Production and Alkali Pulp Processes as Sources of Anionic Lignin Surfactants. In Polymers (Vol. 13, Issue 16, p. 2703). MDPI AG. https://doi.org/10.3390/polym13162703
DS Repositorio Institucional de la Universidad de Huelva
RD 2 jun 2026