No.49 酸処理を施した製紙スラッジ焼却灰の機能性物質転換(ガス化・燃焼・液化(6))

概要

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We attempted to convert paper sludge ash into functional materials via acid leaching. The extraction behaviors of main elements (Si, Al, Ca, Mg, and Fe) from the ash into 1M HCl and 0.5M H_2SO_4 solutions are almost same, except Ca, due to the formation of gypsum. The ash leached with 1M HCl and H_2SO_4 are converted into zeolite-P and tobermorite, respectively, while original ash is converted into hydroxysodalite. The cation exchange capacities of the products from the ash leached with HCl and H_2SO_4 are 130 and 75cmol/kg, respectively, which are higher than that of the product from original ash. These results indicated that paper sludge ash could be converted into functional materials via acid leaching.
一般社団法人日本エネルギー学会の論文
2009-11-26