Title:
Optimization and Scale-Up Correlation Based on Empirical Models of Wheat Straw Samples Adsorption Analysis
Author(s):
Chatzizacharia, K., Papadaki, S., Tsiodra, C., Sidiras, D.K., Hatziavramidis, D.
Document(s):
Paper
Poster
Abstract:
The use of wheat straw, a lignocellulosic material, as an adsorbent of hydrocarbons in water has been investigated after acid hydrolysis pretreatment. Experiments designed in a 3-level Box-Behnken fashion were made to determine the effect of various parameters affecting the behavior of the treated wheat straw as an adsorbent. The kinetics of the acid hydrolysis of cellulose, the reaction kinetics, adsorption isotherm and thermodynamic parameters are presented, as well as the empirical models for the acid hydrolysis and adsorption steps. The hydrolysis kinetics of cellulose and hemicellulose were fitted with a first and second order model, as well as the sorption equilibrium isotherms were modeled by Langmuir, Freundlich and Temkin expressions. The responses of several analytical methods such as Mercury Porosimetry, Thermogravimetric Analysis (TGA), Total Organic Carbon (TOC) and Scanning Electron Microscope (SEM) were utilized to characterize the material and its adsorbancy potential with the use of empirical models of non-linear regression and artificial neural networks (ANN).
Keywords:
acid hydrolysis, wheat straw, sorption isotherms, non-linear regression, artificial neural networks
Topic:
Biomass Resources
Subtopic:
Biomass feedstock, residues and by-products
Event:
24th European Biomass Conference and Exhibition
Session:
1BV.4.62
Pages:
249 - 255
ISBN:
978-88-89407-165
Paper DOI:
10.5071/24thEUBCE2016-1BV.4.62
Price:
FREE
