Removal of nitrides and fluorides from secondary aluminum dross by catalytic hydrolysis and its mechanism.

ABSTRACT: Secondary aluminum dross (SAD) refers to hazardous waste from secondary aluminum refinement. It contains a large amount of aluminum nitride and fluorides that cause serious environmental pollution for direct discharge and hinder the resource utilization of SAD. However, it is difficult to remove nitride and fluoride simultaneously for their complicated phases. In this paper, the catalytic hydrolysis of SAD using NaOH as a catalyst to remove nitrides and fluorides synchronously was investigated systemically through single factor and response surface experiments. In addition, the chemical speciation and transformation of nitrides and fluorides were analyzed systematically. The catalytic hydrolysis removal mechanism was summarized. The optimal conditions for catalytic hydrolysis were establis

SUBMITTER: Li Z 

PROVIDER: S-EPMC9860295 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature