CHEMICAL FRACTIONS OF Al IN VOLCANIC SOIL AMENDED WITH CELLULOSE WASTE

Journal of The Chilean Chemical Society

CANALES, CAMILA¹  BONOMELLI, CLAUDIA¹  ANTILÉN, MÓNICA¹  BORQUEZ, CARLOS¹  ARELLANO, EDUARDO¹  ARTACHO, PAMELA¹ 

[1] Pontificia Universidad Católica de Chile, Santiago, Chile

关键词: sequential extraction;    chemical fractions;    cellulose waste (Dregs;    Grits);    volcanic soil;    waste disposal.;   

DOI  :  10.4067/S0717-97072013000400042

学科分类：化学（综合）

来源: Sociedad Chilena de Quimica

【 摘 要 】

The cellulose industry generates a great volume of organic and inorganic waste, one of these wastes are called dreg (D) and grits (G). These residues have a high content of calcium carbonate, positioning them as potential bleachers in acid soils. Due to the important content of Al in the residues, a sequential extraction was done to establish the metal chemical fractions such as exchangeable, adsorbed, organic carbonated, and the ones associated to sulfurs, in incubated samples (2, 4, 8, and 32 days at 60°C) of an Andisol amended soil with Grits, Dregs + Grits and lime in 1, 2 and 3 ton/ha doses. The results revealed that there was a significant increase in the amount of Al in all fractions, in comparison to the control soil. On the other hand the incorporation of these residues through a Dregs (70%) + Grits (30%) mixture provoked a pH increase, always higher than the commercial lime.

【 授权许可】

Unknown