In this study, compressive strength, density, porosity, and methylene blue adsorptive intensity of sodium aluminosilicate monolith produced from coal fly ash (CFA), ceramic tile waste (CTW), spent bleaching earth (SBE) were evaluated. Using simple lattice mixture design, CFA-CTW-SBE blend with mass ratio 55.95% CFA, 38.73% CTW, 5.31% SBE, an alkali solution containing 80% 8M NaOH 20% silicate, ...

Opioid therapy for chronic pain generally use controlled release formulations to deliver analgesic drugs around-the-clock. Controlled release dosage forms can enlarge the therapeutic effect by controlling the rate and site of release. However, with high drug content, opioid formulations are easily targeted for non-medical use. With the increasing concern of opioid abuse, tamperresistance become...

The effect of the curing in a carbonated ambient of the solids obtained after the stabilization/solidification (S/S) of metallurgical waste using geopolymerization technology is described in this paper. The electric arc furnace (EAF) dust used to stabilize contains hazardous metals such as Pb, Cd, Cr or Zn. Different geopolymeric agents as potassium hydroxide, potassium silicate, metakaolin and...

The effect of sodium hydroxide (SH) concentration and silicate (SS) content in alkali activator on mechanical properties wet-dry resistance fly ash added pumice based geopolymer paste were investigated. In the study, SH was used as 8, 10, 12 14 molar, while weight ratio SS to 0, 1, 2 3. While density samples increased significantly with increase molarity mixtures low content, it less affected b...

The high amount of organic and inorganic wastes has increased the attention to new strategies aiming reduce waste disposals. Organic wastes, such as tomato (TWs), are a good source from which red color can be obtained. Among different technologies, geopolymers had been proposed powerful technology able incorporate various kinds wastes. In this paper, pure metakaolin mixture obtained by adding 1...

Due to its low hydraulic reactivity, ladle slag is currently underutilized with nearly 80% of annual generation either landfilled or dumped. This work investigates the joint activation LS Class F fly ash, and impact on ash geopolymer focus activation, hydrates assemblage, conversion process, thermal behavior. Results reveal that unique reaction process in alkali system shows a positive influenc...

Iron ore tailings (IOTs) and coal gasification slag (CGS) were used to prepare novel ceramsites via high-temperature sintering. The IOTs activated by NaOH form a geopolymer that was sintered at 650 °C, 850 1050 °C obtain ceramsites. formation of the confirmed characteristic peaks Si–O–T (T = Si, Al) in Fourier transform infrared spectra. X-ray diffractograms showed Fe3+ participated geopolymeri...

The current study aims to investigate the effect of calcium hydroxide on geopolymer derived from an admixture natural mineral (kaolin) and industrial by-products (fly ash, red mud). compressive strength microstructure were studied using tests, X-ray diffraction, infrared spectroscopy, BET method, scanning electron microscopy. For investigated NaOH activator concentrations ranging 4 M 10 M, firs...