The effect of temperature curing on total petroleum hydrocarbon (TPH) values of slag-based polluted sample leachate

Abstract

Alkaline activation is noteworthy in manufacturing due to its environmental implications since it enables the use of waste materials containing amorphous SiO2 and Al2O3 as initial components. Herein, stabilization/solidification (S/S) using the alkaline activation of granulated blast furnace slag (GBFS) was used to reduce the total petroleum hydrocarbon (TPH) of the crude oil-polluted sample leachate. By producing cementitious products and reducing the pore spaces of the oil-contaminated soil, the alkaline activation of slag created a dense structure and significantly lowered TPH. By raising the curing temperature, the TPH reduction intensity increased and reached > 60 %. Besides helping the circular economy by extracting high-quality resources from waste, this method controls oil pollution spread and decreases environmental pollution as it replaces cement and lime.