The molecular design of synthetic leather waste water extractants and extraction process research

Abstract

In order to extract and treat DMF-containing wastewater generated in synthetic leather industry and avoid the defects of high toxicity and low efficiency of extractants, computer-aided molecular design of extractants for liquid-liquid extraction of DMF wastewater was carried out. Constraints on the nature of the extractant and environmental constraints were added to design an efficient and environmentally friendly extractant, and a weighted scoring method was established for the evaluation of the extractant. The top three extractant design results were simulated and optimised with the target of total annual cost TAC to verify the extraction effect, and propyl formate was considered the best extractant in this design after comprehensive evaluation.