Azis

922 views

Published on

Published in: Technology, Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
922
On SlideShare
0
From Embeds
0
Number of Embeds
19
Actions
Shares
0
Downloads
8
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Azis

  1. 1. Harnessing Bioenergy from Lignin Muhammad Mufti Azis CSS Chalmers University of Technology, Gothenburg, Sweden STUDENT SUMMIT FOR SUSTAINABILITY (WSC-SD), UNIVERSITY OF REGINA, SASKATCHEWAN, CANADA MAY 2008
  2. 2. Outline of presentation <ul><li>Introduction </li></ul><ul><li>Motivation </li></ul><ul><li>Lignoboost process </li></ul><ul><li>Environmental and Socio-economic Gain </li></ul><ul><li>Remarks </li></ul>
  3. 3. What is Lignin? <ul><li>The most complex polymer in polymer in wood. Its main functions are: </li></ul><ul><ul><li>It gives stiffness to the cell wall </li></ul></ul><ul><ul><li>It glues different cells together </li></ul></ul><ul><ul><li>It makes the cell wall hydrophobic </li></ul></ul><ul><ul><li>Protection against microbial degradation </li></ul></ul><ul><ul><li> (Ljungberg Textbook) </li></ul></ul>
  4. 4. Lignin in nature <ul><li>Taken from: Kirk and Othmer </li></ul>
  5. 5. Environmental and Socioeconomic Impact From: Kvaerner pulping for non-commercial use KRAFT Process
  6. 6. Motivation <ul><li>The original idea was to enhance capacity of pulp mill without huge investment on recovery boiler. </li></ul><ul><li>Theoretically, It is possible to achieve energy surplus in pulp mill </li></ul><ul><li>If lignin is extracted from black liquor, it opens up possibility to export energy from </li></ul><ul><li>pulp mill </li></ul>
  7. 7. PULP MILL LignoBoost Taken from: www.lignoboost.com
  8. 8. Lignoboost Process From: Öhman et.al. 2007
  9. 9. Lignin
  10. 10. Energy Supply in Sweden (2006) From: Swedish Energy Agency 192 201 116 113 Total: 624 TWh
  11. 11. Environmental and Socio-economic <ul><li>According to reference mill, It is possible to </li></ul><ul><li>achieve CO2 emission -260 Kg CO2 / ADt due to potential to generate energy from black liquor and bark. </li></ul><ul><li>Incineration of lignin mixed with coal paste shows promising result </li></ul><ul><li>With lignin price 15 €/MWh, it is more profitable than upgrading recovery boiler capacity in order to increase mill capacity </li></ul><ul><li>Government supports development of renewable energy by issuing green certificate and imposing tax on fossil fuel </li></ul>
  12. 12. Remarks “ Lignin extraction is a first step to “by-pass” mother nature slow way of producing fuel and chemicals based on hydrocarbons.” (Prof. Hans Theliander)

×