Effect of Mineral Matter on the Reactivity of the Char from Agricultural Waste

Agricultural waste disposal is becoming a problem due to its increasing production and potential pollution. As a kind of biomass, agricultural waste can be used as a sustainable and renewable source of energy. Agricultural waste disposal is of great economic and environmental importance. In the paper, the effect of the mineral matters in agriculture waste on the reactivity of its char was investigated. The oxidation behavior of the resultant char depends strongly on the agriculture waste type. The oxidation behavior of AW 1 and AW 2 char differs greatly from each other because of the difference in their mineral matters. The pretreatment with dilute acid solution in the sequence of HCl and HF acid can remove nearly all the inorganic constituents from the agriculture waste. The mineral removal results in a decrease in the reactivity of the resultant char.