Download details

CONVERSION OF SOLID WASTES TO DOMESTIC/INDUSTRIAL FIRE- CONVERSION OF SOLID WASTES TO DOMESTIC/INDUSTRIAL FIRE-LOGS

This is only a simple document without a file.
featured_orange_star

Sawdust is abundant in Nigeria due to thriving wood industry. This demands the need for proper waste management to be employed as landfills and direct burning seem not to have lasting solution in reducing the menace posed by improper disposal. The calorific value of sawdust is 4800kcal/kg this is high when compared with firewood which has about 1800 – 2000kcal/kg. This study investigates the strength property of Fire logs made from sawdust blended with different levels an organic binder (starch). Densification of sawdust was carried out using a locally manufactured mould of 68mm in height and 30mm diameter. Sawdust was pulverized using the hammer mill with a mesh size 2.73. Milled samples was then further sieved using a 1mm and 300µm particle size mesh size sieve to get the desired particle size for this study. 100g of 1mm particle size sawdust was blended with 15g, 20g, 25g, 30g and 35g of starch. The materials was homogenized properly, molded and allowed to sun dry for a period of 72 hours. Using the Universal Testometric Machine, strength property of the dried fire logs such as compressive strength was assessed. Results shows that 25g starch blended with 100g of sawdust gave the highest compressive test value (0.682N/mm2). 20g starch blended had the lowest value of 0.242N/mm2. While 300µm particle size sawdust blended with 25g starch gave a compressive strength of 1.66N/mm2. Drop shatter test was negative as logs did not shatter on impact when dropped from 1.85m height after 10 retries The calorific energy of the fire logs was also determined and both 1mm and 300µm particle size fire logs ranged between 7000 – 7700kcal/kg. Ignition and burn time of sawdust fire logs was 60 and 3240secs respectively. The sawdust fire logs glowed bright red when combusted. The blending of sawdust and starch shows enormous potential for use in the production of stable fire logs.

Information
Created 2016-08-13
Changed 2016-08-13
Version
Size 0
Rating
(0 votes)
Created by Olakunle, Joel
Changed by Olakunle, Joel
Downloads 0
License
Price