Title:
Modified Wheat Straw for Adsorptive Removal of Hexavalent Chromium from Various Water Sources
Author(s):
Politi, D.V., Sidiras, D.K.
Document(s):
Paper
Poster
Abstract:
This study investigated the potential use of wheat straw by autohydrolysis pretreatment for the removal of hexavalent chromium from wastewater. The novelty of this study is that a simulation of cleaning of water sampled by actual locations, by hexavalent chromium was performed. These four locations that we chose to perform our research belong to Athens industrial zone, one stream, one lake and two ports for seawater. Adsorption capacity was studied for batch processes. The experimental adsorption isotherms were simulated using two isotherm models, including Freundlich and Langmuir models. By using the Langmuir isotherm model, the maximum hexavalent chromium adsorption capacity of autohydrolysis pretreatment wheat straw (qm) was 58 mg g-1 from the lake. Furthermore, the kinetic data were fitted to (i) Lagergren, (ii) second order, and (iii) intraparticle diffusion models, thus revealing that the adsorption of hexavalent chromium onto pretreated wheat straw is best represented by the second-order kinetic model.
Keywords:
biomass, wastewater, wheat straw, adsorption, chromium
Topic:
Biomass Technologies and Conversion to Intermediate Bioenergy Carriers and Products of the Bioeconomy
Subtopic:
Bio-based chemicals and materials
Event:
28th European Biomass Conference and Exhibition
Session:
3CV.1.11
Pages:
649 - 655
ISBN:
978-88-89407-20-2
Paper DOI:
10.5071/28thEUBCE2020-3CV.1.11
Price:
FREE
