Elaboration and properties of low-cost ceramic microfiltration membrane from local Tunisian clay for wastewater treatment

Abstract

This study focused on the development and preparation of a microfiltration membrane, based on a low-cost natural Tunisian clay powder, deposited on macro-porous ceramic support. The deposit was made through a dip-coating technique, followed by a drying process and sintering at 700 °C. Results revealed that the obtained membrane was characterized by a good adhesion between the membrane layer and the ceramic support, an average pore diameter of 0.34 mm, and a porosity of 39%. This membrane was applied in the treatment of wastewater generated by the wastewater treatment plant of Sfax, Tunisia. The performances in terms of permeate flux and efficiency were determined in order to reduce the pollutant content expressed in terms of turbidity, biochemical oxygen demand (BOD5), and suspended matter (MES). Results showed an MES retention value of about 15%, and turbidity and BOD5 retention rate of 99% and ~100%, respectively.

Synthesis and characterization of low-cost ceramic membranes using red mud from the eastern Amazon as waste from the Bayer process

“…In this way, becomes evident the increase of a search for alternative and viable sources from raw materials for membrane preparation. For over the years, low-cost membranes have been developed from a variety of raw materials, such as Sugarcane Bagasse [6] , Mullite [7] , Tunisian Clay [8] , Algerian kaolin [9] .…”

Gas permeability and compressive strength evaluation of porous Al2O3 supported membrane

“…The porous support must provide mechanical resistance enough to avoid unexpected troubles in operation and, at the same time, must provide low resistance to gas flux [9,11,14]. Al 2 O 3 powder is the main raw material used in the production of the porous support [15], but other ceramic powders also can be employed, such as TiO 2 , SiO 2 , ZrO 2 , perovskite, mullite, cordierite [10,16], as well as non-oxide compounds (nitrides, carbides, and borides) [5], and clays [17,18]. Various processes are used to deposit the thin films onto the porous support, including spin coating, screen printing, and dip coating [19].…”

Adsorption of methylene blue using fish scales as biosorbent

“…The great increase in the world population in the last decades, added to the growing development of new products and technologies, has generated a very great need for water consumption by the population in general, but by industries (CICEK, 2003). These high-water resources consumption leads to a large generation of wastewater contaminated with a variety of products, such as heavy metals, organic dyes, and inorganic residues (FIGUEIREDO et al, 2020;KAMOUN et al, 2020;KESKIN et al, 2021). A dye widely used in the textile industry is methylene blue (MB) (C 16 H 18 ClN 3 S), evaluated as a basic type of dye, with a heterocyclic aromatic molecular structure (ÖZACAR;ŞENGIL, 2003).…”