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| dc.contributor.author | Josiyas, Zena | |
| dc.date.accessioned | 2022-02-24T07:09:36Z | |
| dc.date.available | 2022-02-24T07:09:36Z | |
| dc.date.issued | 2021-10 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/13059 | |
| dc.description.abstract | The rapidly increasing consumption on plastic products and generation of waste water sludge from textile industries is becoming a big concern for the environment. The number of industries/factories increases their production to satisfy the increasing demand of population all over the world. Due to this, the amount of waste generating by these factories/ industries is increasing. Incinerating, sanitary land filling, to some extent chemical oxidation are the most used conventional solid waste management methods in the last decades. Nevertheless, such conversional methods don’t provide ultimate and sustainable solution for resource utilization. The objective of this research is therefore to investigate and characterize of tiles from waste plastic blended with textile wastewater sludge to use as a potential strategy for resource recovery. Polyethylene Terephthalate plastic, having high molecular structure was purchased from local market, sorted, washed to remove impurities and dried at 105°C. Side by side textile wastewater sludge was collected, dried at 105°C and pulverized into small particle size. The sludge was pulverized with local apparatus and plastic waste also was cut into small pieces. The pulverized sludge was sieved with electromechanical machine having 0,075mm to 4.75mm mesh size. The dried and size reduced plastic waste was melted at 260°C in the Oven. The characterized sludge and stone sand were mixed with the liquid form melted plastic as a binder, and then they were placed in heated mixer and finally casted with hydraulic pressing machines (at 5, 10 and 15Mpa). Three mass ratios (1:1:1, 0.5:0:0.3:0.2, 0.3:0.5:0.2) at three particle size (0.075, 1.18 and 2.36mm) and metal casted mold having 15x15x 6 cm dimension were used to produce the tiles and tested at 28 th days at which the specimen can get maximum strength. The tiles were characterized for compressive and flexural strength and water absorption (which are mandatory parameters for floor tiles). It is found that the entire tested specimens satisfied the allowable water absorption standard, which is up to 8% for tiles. The compressive strength ranges from 6.7 to 18.5MPa; and satisfied the allowable compressive strength standard for tile application, which is 3.5KN. The maximum result was found to be 107 KN or 18.5N/mm 2 breaking load at (stone sand 50, sludge 30 and plastic 20) % ratio. The minimum and the maximum flexural strength were 2.2 and 5.7 N/mm 2 respectively, 84% of the tested specimens satisfied the standard set 3KN and above. The major effect for 16% frailer was the decreasing of sand ratio. The dominant effects were particle size and particle ratio. The optimal tile produced at particle size of 1.22mm, particle ratio of (50%: 30%: 20%) and a pressure of 12.5Mpa has been investigated with a compressive strength of 15.4Mpa, a flexural strength of 5.2Mpa and water absorption of 2.00%. | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | CHEMICAL AND FOOD ENIGINEERING | en_US |
| dc.title | Manufacturing and Characterization of Tiles from Textile Waste Sludge Blended with Plastic Wastes | en_US |
| dc.type | Thesis | en_US |
