Leaching of ions after the application of organic residues of a pharmochemical industry

Revista Brasileira de Engenharia Agrícola e Ambiental

Costa, Antonio C. S. da²  Luchese, Augusto V.¹  Souza Júnior, Ivan G.¹ 

[1] UEM, Maringá;UEM

关键词: soil columns;    biosolid;    sludge    INTRODUÇÃO Não apenas no Brasil mas também em outros países;    grandes quantidades de resíduos têm sido depositadas sobre o solo de forma planejada;    como fonte de nutrientes para as plantas (Silva et al;   

DOI  :  10.1590/S1415-43662008000200012

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

In the last decades, increasing amounts of industrial residues have been deposited in the soil in either a planned way, or accidentally. The objective of this work is to evaluate the impact of the application of a high dose of organic residues (Biossolid - Bs and Sludge - Sd) produced by a pharmochemical industry on the contamination of spring waters. Therefore, an experiment was set up in PVC columns of 20 x 120 cm (diameter x height) in a factorial design 2 x 2 x 2+ 2 with, 2 soils (NVdf and PVd), 2 residues (Bs and Sd), 2 forms of application of 1 million L ha-1 (incorporated and on surface), and a control for each soil. In each column, ten water applications were performed corresponding to 120% of the water column holding capacity; the leached water was collected to evaluate its chemical attributes. EC of the leached water presented a decrease from 1st to the 2nd water application, and the pH increased until the fourth water application. The appraised ions presented different behaviors; those that form outer sphere complex (NO3-, Cl-, Ca2+, Mg2+ and Na+) had fast leaching. The nutrients that form inner sphere complex behaved differently, and PO43- presented low leaching, while K+ leached less than the control and SO42- leached more after the 3rd water application.

【 授权许可】

CC BY-NC