Banca de QUALIFICAÇÃO: RAQUEL IANINE LIMA DE SOUZA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : RAQUEL IANINE LIMA DE SOUZA
DATE: 03/11/2022
TIME: 14:00
LOCAL: Auditório Campus Gameleira
TITLE:

USE OF MEMBRANE SEPARATION PROCESSES APPLIED TO JEANS LAUNDRY EFFLUENT FOR REUSE

KEY WORDS:

jeans, laundry, effluent, membranes, reuse.

PAGES: 82
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

The fashion industry makes intensive use of water resources in its production process and consequently generates high volumes of effluents annually. The use of synthetics and residual chemicals from chemical sources in these current times. Jeans processing contributed heavily to this high-water consumption. And it is in the beneficiation processes, which take place in the laundry water, the largest clean expenses. Increasingly high has caused water stress and this has caused worldwide concern. The optimization of production processes aiming at sustainability is one of the great challenges of today. Based on the principles of a circular economy, resources should never be transformed in large quantities, but possible in the process for the longest time. The reuse of a reliable alternative laundry is part of the 2030 Agenda laundry action plan. In this study, the effluents were generated by a laundry fluoride hollow fiber membrane (PVDF) aiming at its reuse. The morphological fiber by means of transport. The observation of its porous structure aims to guarantee the evaluation of ultrafiltration (UF). The molecular cut-off point found was 66 kDa. The fiber structure by spectroscopy showed a structure with pyro and piezoelectric characteristics. A bench scale system was developed for permeation. Through test operation variables the process and the behavior of the system permeating the laundry effluent were investigated. The system guarantees good stability for tests over longer durations. pressure critical flow test and permeability control indicates 0.5 bar as ideal of operation. The increase in flux at certain times was attributed to reversible processes of adsorption and/or concentration polarization. Declines in flow may also have occurred due to membrane sensitivity to high presence of salts and ions in the effluent. The UF performance was developed with different effluent samples. Quality parameters were compared between the raw effluent and the permeates obtained. The effluent at low pH (acidic) showed low flow. Aggregation of dye solutions and possible obstruction of membrane pores for this elevation. UF was efficient in improving parameters, turbidity (95%) and solids (94%). However, the process was ineffective for device removal and chemical oxygen demand (COD). The need for an additional separation process integrated to the UF is suggested for filtering filtration of exploration filters and makes it possible to reuse this safe permeate at some stage of the production process of jeans filtration.

BANKING MEMBERS:
Presidente - WAGNER GUADAGNIN MORAVIA
Interna - GISELE FATIMA MORAIS NUNES