Papermaking sludge(PS)is the main by-product of papermaking wastewater treatment.Pyrolysis technology can reduce the output of papermaking sludge and achieve harmless and stable utilization.However,the ash content in the sludge is high and the bio-oil yield is low.It is difficult to use it directly as fuel.Therefore,adding biomass can effectively avoid the insufficient pyrolysis of sludge,help improve pyrolysis efficiency as well as product quality.
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