RT Journal Article
T1 Removal of pigments from aqueous solution by a calcium alginate–grape marc biopolymer: A kinetic study
A1 Pérez-Ameneiro, María
A1 Vecino, Xanel
A1 Barbosa Pereira, Letricia
A1 Cruz, J. M.
A1 Moldes, Ana B.
K1 Grape marc
K1 Adsorption
K1 Biopolymer
K1 Kinetics
K1 Dyes
AB In this work, the potential use of a biopolymer based on grape marc entrapped in calcium alginate beads for the removal of pigments from an agro industrial effluent was evaluated. The parameters that affect the pigment adsorption such as pH (3.5–7.0), temperature (10–40 °C) and initial pigment concentration (6.9–55.1 mg/L) were studied by applying an incomplete factorial design. The dependent variables evaluated consisted of color effluent parameters from CIELAB and Tristimulus system, as well as the concentration of pigments in the wastewater after the adsorption treatment. The most significant independent variables tested were the pigments concentration followed by pH, whereas temperature had a negligible effect on the adsorption process. Moreover, at the optimal operational conditions (pH 3.5 and room temperature) kinetic studies were carried out by applying pseudo-first order, pseudo-second order, Chien–Clayton and intraparticle diffusion models, observing a good agreement between theoretical and experimental results.
PB Elsevier
SN 0144-8617
YR 2014
FD 2014
LK https://hdl.handle.net/10347/39393
UL https://hdl.handle.net/10347/39393
LA eng
NO Perez-Ameneiro, M., Vecino, X., Barbosa-Pereira, L., Cruz, J. M., & Moldes, A. B. (2014). Removal of pigments from aqueous solution by a calcium alginate–grape marc biopolymer: A kinetic study. Carbohydrate Polymers, 101, 954–960. https://doi.org/10.1016/j.carbpol.2013.09.091
NO Xunta de Galicia (project GPC, ref. 450 CN2012/277).
DS Minerva
RD 24 abr 2026