Gözde Özgel M., Kanat G., Tombul B.

Rumeli 1ST International Scientific Research Conference On Sustainable Engineering And Technology (ISRCSET’22), İstanbul, Turkey, 13 - 15 May 2022, pp.1-7

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.1-7
  • Yıldız Technical University Affiliated: Yes


Urbanization and technological developments cause a continuous increase in the amount of hazardous and non-hazardous waste. According to the waste management hierarchy; wastes are managed by prevention, reduction, reuse, recycling, energy recovery and disposal processes. Improper disposal of waste poses a serious threat to human health and the environment, and also causes pollution of air, soil and groundwater. Hazardous wastes which Especially for toxicity, corrosiveness, flammability etc. containing  are managed in accordance with the waste management legislation of the country in which they are located. One of the prominent methods of disposal of hazardous wastes is landfill. The solidification/stabilization (S/S) process which is the pre-treatment before landfill, is one of the main methods used in the treatment of hazardous wastes. The S/S process involves the conversion of the physical and chemical properties of wastes containing components that are forbidden to be disposed of without pretreatment with binders. In the S/S process, harmful inorganic and/or organic pollutants are stabilized by a matrix formed with binder material and converted into a monolithic structure. The aim of the S/S process is to minimize the environmental risk of pollutants in the waste to meet the landfill acceptance criteria. Cement is a widely used binder material due to its low cost, availability and effectiveness in stabilizing heavy metals. In this study, a total of 4 different matrices containing different percentages of waste and cement were prepared in order to reduce the flue gas dust generating from iron and steel production and containing Pb heavy metal in high concentration to the hazardous waste landfill limits. In the study, it was aimed to determine the optimum amount of cement required to reduce the Pb concentration to the storage limits. Leaching tests including the waste acceptance criteria specified in the Toxicity Characteristics Leaching Procedure (TCLP) and the Regulation on Regular Landfilling of Wastes (RRLW) Annex-2 were applied to the waste and samples used in the study. Compressive strength test was performed on samples with  14-day curing time and comparisons were made according to international pressure strength limit values.