Incorporation of residual cuso4 into cement as a final disposal method

Química Nova

Gimenez, Sônia Maria Nobre¹  Universidade Estadual de Londrina, Londrina, Brasil¹  Yabe, Maria Josefa Santos¹  Alfaya, Antonio Alberto da Silva¹  Paschoalino, Matheus Paes¹ 

关键词: residues;    cement;    final disposal.;   

DOI  :  10.1590/S0100-40422006000400014

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Residual CuSO4 was incorporated into the mass utilized for cement preparation. To a cement mass with 1:0.5:5 of cement, lime and sand to 0.25, 0.50, 0.75 and 1.00% of residual CuSO4 were added. The sulfate was mixed separately with lime and water to induce metal precipitation. The hardened test bodies were submerged in Milli-Q water for three months. No Cu was detected in the water by Atomic Absorption Spectrometry. The best proportion for mechanical resistance and porosity is 0.50%. The cement is adequate for non-structural objects.

【 授权许可】

Unknown