Fate of PAHs in an autofluff incineration process

Abstract

The autofluff (auto shredder residue) is far more difficult to be treated effectively. At present, only landfilling of autofluff is practiced on a large scale, and its cost is rising rapidly and the acceptance of this method is decreasing. In the nearly future, incineration of autofluff would be an economically attractive alternative. The autofluff wastes contains at least 5 wt% of Cl. An important question is whether the destruction of these wastes leads to the formation of other hazardous matters. Of the main concern are the PAHs. In the steady‐state operation of the autofluff incineration process, major constituents of PAHs were emitted via the stack. We found that the mass growth of PAHs involves a sticking rings collisions routes at 910–1050°C. Experimentally, addition of BghiP to particles does increase the size or amount of particles.

Key words:

• PAHs
• incineration
• ASR
• soot formation