As stated in the Title, in both incineration and burning trees, the products of combustion are exhausted to the atmosphere.
The main difference is that in an incinerator the combustion creates an exhaust stream at high temperature. The heat recovery process produces an energy stream that can generate electricity. There are some pollutants that are removed by scrubbers but essentially all of the other combustion products are exhausted to the atmosphere.
Not exactly correct.
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