Wesleyville Questions & Answers

What is the ‘Inert Ash’ after the Advanced Thermal Conversion Process?

The solid residue is a dense white ash that is extremely low in carbon (3%) due to the gasification process and the 16 hour time-frame to convert the waste to gas but more importantly, it’s an ash that is clean, inert and non-hazardous or non-toxic. It is also suitable for secondary markets as an aggregate that can be used in the following applications – concrete and asphalt within a variety of industries.

The key criteria for a Thermal Treatment Process are:

Temperature

ACT operates at less than 500 degrees C whereas other processes typically operate at greater than 1,000 degrees C.

Time

ACT processes waste over 16 hours providing complete degradation whereas other processes require degradation of 5 minutes or less which ultimately leaves partially combusted materials behind requiring landfill.

Turbulence

ACT is a very passive environment inside the "primary cell" and produces virtually no fly ash whereas other processes are very turbulent producing large quantities of fly ash. The ENTECH-WtGAS-RES solid residue neutralization system transfers any solids back to the gasification chambers where it is subjected to high temperature once again to destroy any remaining hazardous organic compounds (e.g. Dioxins) within the white Inert Ash.

Toxicity

ACT residual ash is Inert and not harmful to the environment. In fact, it can be used in several secondary markets and requires no landfill, whereas other processes have residual toxic waste which requires landfill in designated hazardous waste sites.