Preparation of self-supporting NaA zeolite membranes using geopolymers

Preparation of geopolymer-based inorganic membrane for removing Ni2+ from wastewater

“…Membrane water treatment technology has rapidly developed in recent decades; this technology holds many advantages, such as simple operation, no phase change, energy conservation, low pollution and continuous operation [1][2][3][4][5]. The membrane treatment process is mainly divided into microfiltration, ultrafiltration, nanofiltration and reverse osmosis membranes according to the aperture size and driving force of membrane filtration [6][7][8][9][10].…”

“…In addition, adsorbing and capturing inorganic membranes have been used to remove low concentrations of heavy metal ions, whilst the interception effect of small molecular organic compounds is also obvious; this technology produces less sludge and has outstanding advantages in reducing energy consumption [1][2][3][4][5]16]. Therefore, the latest aim in membrane wastewater treatment technology is to explore easy preparation methods for inorganic membranes which have long service life and low manufacturing cost.…”

Ceramic membrane synthesis based on alkali activated blast furnace slag for separation of water from ethanol

“…Zeolite layers can be prepared via growth of zeolite crystals by means of methods like sol gel [17], microwave [18] and hydrothermal synthesis [19]. Actually, zeolite membranes are some kinds of microporous ceramic materials consisting of aluminosilicates with different ratios of aluminum to silicium.…”

Morphology and Properties of Geopolymer Coatings on Glass Fibre-Reinforced Epoxy (GRE) pipe

“…Geopolymer has received much attention as green alternative to ordinary Portland cement (OPC), with most of the work focused on broad applications in transportation, emergency repairs, metallurgy, coating, membrane materials and nuclear waste disposal [1][2][3][4][5]. The workability of geopolymer and manufactured at normal temperature has made geopolymer increasingly being used in fireproofing covers, mending interfaces, coating pipelines and floors, and as adhesives [6,7].…”