Volume 5, Issue 2, June 2020, Page: 21-26
Assessment of Energy Recovery Potential of Faecal Sludge
Mehejabin Chowdhury Ankan, Western Bangladesh Bridge Improvement Project (WBBIP), Jashore, Bangladesh
Md. Murad Hasan, Western Bangladesh Bridge Improvement Project (WBBIP), Oriental Consultant Global Limited, Jashore, Bangladesh
Md. Jobaer Howlader, Department of Civil Engineering, Khulna University of Engineering and Technology, Khulna, Bangladesh
Received: Dec. 16, 2019;       Accepted: Dec. 26, 2019;       Published: May 28, 2020
DOI: 10.11648/j.larp.20200502.11      View  65      Downloads  27
Faecal sludge generating from fixed-place defecation system has been an increasing concern in Bangladesh. In the city, this challenge is acute due to high population density, rapid and unplanned growth, and inadequate service provisions. Energy can be recovered from faecal sludge (FS) by converting the waste into usable heat, electricity, or fuel through pyrolization. Through Pyrolyzation biochar, biofuel, biogas can be obtained. Biochar can be produced by heating FS at high temperature. The burned portion of the sludge is the biochar, condensed steam is the biofuel and the uncondensed part is the biogas. This study shows that FS has volatile matter ranged between 39 to 50%, which qualify the FS as fuel. The ash residue of FS is between 34 to 45%. The rest of this is moisture. From Thermo Gravimetric Analysis (TGA) it was observed that major thermal events (mass loss rate) were found approximately between 150°C and 400°C which was considered as the ideal temperature range for pyrolysis process. Significant amount of biochar but negligible amount of biogas and biofuel were obtained from the samples by the pyrolysis process. 93.3% biochar, 2.8% biofuel and 3.8% biogas (at 200°C); 91.4% biochar, 3.5% biofuel and 5.1% biogas (at 300°C); 84.6% biochar, 9.3% biofuel and 6.1% biogas (at 400°C) were obtained. The result of pyrolysis analysis shows significant potential for energy recovery from FS.
Faecal Sludge, Pyrolysis, Bio-char, Bio-oil, Bio-gas, TGA
To cite this article
Mehejabin Chowdhury Ankan, Md. Murad Hasan, Md. Jobaer Howlader, Assessment of Energy Recovery Potential of Faecal Sludge, Landscape Architecture and Regional Planning. Vol. 5, No. 2, 2020, pp. 21-26. doi: 10.11648/j.larp.20200502.11
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