Algerian Journal of Engineering Research
Volume 3, Numéro 1, Pages 40-46
2019-06-01

Preliminary Studies Of The Purification Properties Of The Bottom Ash From Incineration Of Hospital Waste For Bleaching A Synthetic Discharge From The Textile Industry.



Authors : Zamouche Zerdazi Rania . Siad .s . Bencheikh Lehocine Mossaab . Meniai Abdeslam-hassen .

Abstract

Yearly the incineration of healthcare wastes (HW) generates large tonnages of bottom ash. Due to their constitutions and particle size distribution, these complex and heterogeneous materials are in the form of an ashy, grayish, friable and heterogeneous magma which is not very fragrant and contains many metal waste (Eguilles syringes, blades, etc.), incombustible mineral residues (glass, plastic, ceramic bottle, etc.) and unbridled resulting from the imperfect combustion of certain constituents. These materials have also adequate mechanical properties for use as a substitute material in the field of road and civil engineering. Bottom Ash (BA) from incineration of HW cannot be disposed off aleatory in landfills due to their composition. However their valorization would be worth considering from the economical and environmental points of view. Therefore they have been tested as discoloring agents in the textile industry which is known to use toxic important quantities of synthetic colorants that pollute its rejected wastewaters. This may also provide an important source of treated water that may be reused. Encouraging results have been obtained concerning the dye removal capacity such as Gentian Violet, used in the textile industry; which has reached 98.82% for a contact time of one minute, an L / S ratio: 0.3 ml mg-1 , a stirring speed of 850 rpm, a Temperature of 20 ± 5 °C. However this bleaching ability could not be achieved for the different BA tested and collected from five different health centers.

Keywords

Waste Incineration, Bottom Ash, Revaluation, Bleaching, Textile Industry

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