Title:
Enhancing the Heating Value of Pretreated Barley Straw
Author(s):
Nazos, A.G., Sidiras, D.K.
Document(s):
Paper
Poster
Abstract:
The purpose of this study is to examine the feasibility of pretreating barley straw to optimize its heating value. The research is based on the pretreatment of barley straw via acid hydrolysis method in a batch reactor, with time, temperature and concentration of dilute acid solution as pretreatment parameters. Diluted sulfuric acid was chosen as the catalyst in the treatment aquatic solution. The process parameters were the temperature (160; 180 and 200 0C), the acid concentration (0.01; 0.023 and 0.035 M), as well as the reaction time (0; 20; 40 min). After the pretreatment the accurately weighed quantities (0.4 to 0.6 g) of pretreated barley straw were measured, and then they were placed in the oxygen container with pressure of 25 bar oxygen and a specific length of ignition wire. The combustion container was placed in the calorimeter's adiabatic tank container which was filled with 2000 g distilled water. At the calorimeter tank, the water was shaken at steady speed while the temperature was measured per minute. The heating value was measured. The moisture content of the samples was 7.1%. The optimal pretreatment conditions were determined using two different approaches: a new combined severity factor (CSF) and the response surface methodology (RSM) based on Box-Behnken experimental design.
Keywords:
acid hydrolysis, barley straw, response surface methodology, combined severity factor, heating values
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Biomass combustion in large utilities
Event:
26th European Biomass Conference and Exhibition
Session:
2BV.4.19
Pages:
668 - 674
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-2BV.4.19
Price:
FREE
