Continuous separation of sugarcane molasses with a simulated moving-bed adsorber. Adsorption equilibria, kinetics, and application

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399208019442· OSTI ID:6910369

Saska, M; Wu, Mei Di; Clarke, S J; Iqbal, K ^[1]

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1. Louisiana State Univ. Agricultural Center, Baton Rouge (United States)

Fundamental chromatographic properties are reported that are related to the industrial separation of sugarcane molasses in a simulated moving-bed adsorber. The distribution coefficients of KCL, sucrose, glucose, and fructose on XUS-40166.00 (K[sup +]) cation exchanger were determined by pulse testing to be 0.00, 0.22, 0.45, and 0.50 at infinite dilution at 70 C. The adsorption isotherm of KCl is quadratic; those of the sugars only slightly nonlinear and dependent on KCl concentration. HETP was found to be independent of fluid velocity for KCl in the range of the interstitial velocity of 5 to 35 cm/min, and increasing with v for sucrose. At high fluid velocities the broadening of the sucrose band in a packed bed comes primarily from intraparticle mass transfer, with axial dispersion and film diffusion playing minor roles. The process for separation of sugarcane molasses was demonstrated on a 47 liter, eight-column simulated moving-bed adsorber. A theoretical, staged model of the simulated moving-bed adsorber with one inert totally excluded and three linearly adsorbing components was found to give an excellent representation of the transient and steady-state behavior of the continuous separation of sugarcane molasses.

• OSTI ID: 6910369
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 27:13; ISSN 0149-6395; ISSN SSTEDS
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090900* -- Biomass Fuels-- Processing-- (1990-)
ADSORPTION
ADSORPTION ISOTHERMS
ALDEHYDES
ALKALI METAL COMPOUNDS
CARBOHYDRATES
CHLORIDES
CHLORINE COMPOUNDS
DATA
EQUILIBRIUM
EXPERIMENTAL DATA
FRUCTOSE
GLUCOSE
GRAMINEAE
HALIDES
HALOGEN COMPOUNDS
HEXOSES
INFORMATION
ISOTHERMS
KETONES
LILIOPSIDA
MAGNOLIOPHYTA
MOLASSES
MONOSACCHARIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
PERFORMANCE
PLANTS
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
REEDS
SACCHARIDES
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SORPTION
SUGAR CANE