Next Article in Journal
Energy Consumption Prediction for Electric Vehicles Based on Real-World Data
Previous Article in Journal
Torque Distribution Algorithm for an Independently Driven Electric Vehicle Using a Fuzzy Control Method
Article Menu

Export Article

Open AccessArticle
Energies 2015, 8(8), 8562-8572;

Gasification of a Dried Sewage Sludge in a Laboratory Scale Fixed Bed Reactor

Institute of Thermal Technology, Silesian University of Technology, Konarskiego 22, 44100 Gliwice, Poland
Academic Editor: Shusheng Pang
Received: 17 June 2015 / Revised: 22 July 2015 / Accepted: 23 July 2015 / Published: 12 August 2015
Full-Text   |   PDF [609 KB, uploaded 12 August 2015]   |  


This paper presents an investigation of sewage sludge gasification in a fixed bed gasifier. Experiments were conducted on a laboratory scale fixed bed gasifier. In the experiments, two types of dried sewage sludge were tested and their properties were analysed. Parameters such as air ratio λ = 0.12 to 0.27, gasification agent temperature t = 50 to 250 °C and gasification agent composition ( = 0.21 and > 0.21) were found to influence on temperature distribution, syngas Lower Heating Value (LHV) and syngas composition. The results indicate that the syngas LHV was found to decrease with increased air ratio for all analyzed cases: cold and preheated air and cold enriched air. The increase in the percentage of the main combustible components was accompanied by a decrease in the concentration of carbon dioxide. Increasing oxygen concentration increased the temperature, which tended to favor the formation of smaller molecules in the gas mixture. Thus, the enriched air medium produced a gas with a higher LHV. In contrast to conventional gasification, gasification process with gasification agent preheating causes that the flux of heat necessary to support endothermic gasification reactions is producing more effective. Air preheating causes increases hydrogen and carbon monoxide production. View Full-Text
Keywords: sewage sludge; gasification; syngas; operating parameters; fixed bed installation sewage sludge; gasification; syngas; operating parameters; fixed bed installation

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Werle, S. Gasification of a Dried Sewage Sludge in a Laboratory Scale Fixed Bed Reactor. Energies 2015, 8, 8562-8572.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top