Effects of Ca-Compounds on the Gases Formation Behavior during Molten Salts Thermal Treatment of Bio-Waste

Bio-waste utilization is essential, and pyrolysis a prominent way for its effective utilization. However, the gradual accumulation of ash compounds in intermediate products probably affects thermal conversion characteristics bio-waste. In present study, beech wood disposable chopsticks were selected as bio-waste samples. The effects typical components (Ca-compounds) on volatile formation behavior investigated during molten salts treatment Results demonstrated that about 80% mass initial was gasified into volatiles at 300 °C. introduction Ca-compounds slightly decreased total yield gaseous products. More specifically, Ca2+ could improve generation CO2 suppress other gases (CO, H2, CH4), this accompanied by reduction low heating value (LHV) gases. possible reason might act -OH bonds, phenyl C-C bond, methoxy bond carboxylic acid -COOH bonds to promote release. contrast, CO32− OH- tended relieve inhibition effect H-containing Meanwhile, can liquid well increase saturation level Moreover, vital form carbon storage, found be abundant from bio-waste, concentration much higher than direct-combustion or co-combustion with coal. It’s promising energy synchronized capture using treatment, while small amounts have no significant change concentration.