Chemical composition of DREGS

Química Nova

Campos, Mari Lucia¹  Universidade do Estado de Santa Catarina, Lages, Brasil¹  Almeida, Henrique Cesar¹  Ernani, Paulo Roberto¹  Almeida, Denice¹  Silveira, Cristian Berto da¹ 

关键词: industrial residue;    soil acidity amendment;    heavy metals.;   

DOI  :  10.1590/S0100-40422007000700032

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Dregs is an alkaline solid by-product generated in the cellulose manufacturing industry that could be used to correct soil acidity. The present study aimed to evaluate the chemical composition of this product and some of its properties. The dregs presented 354 g kg-1 of calcium, neutralization capacity of 80.3%, and pH 10.7, besides low concentration of sodium (10.2 g kg-1), lead (62.9 mg kg-1) and cadmium (5.6 mg kg-1). Thus, it is a product that can safely be used to increase the soil pH.

【 授权许可】

Unknown