Adsorption chillers produce cold energy, using heat instead of electricity, thus reducing electrical energy consumption. A major industrial waste, fly ash, can be converted to zeolite and used in adsorption as an adsorbent. In this research, three different types zeolites were synthesised from ash via a hydrothermal reaction alkaline solution (NaOH). The obtained samples (Na-A zeolites) modifie...

This work presents a comparative study of microwave and conventional (conductive) heating for adsorbent regeneration. A binary gas mixture representative pre-dried flue from coal-fired power plants (15% v/v CO2 in N2) was passed through rotatory fixed-bed adsorption column filled with zeolite molecular sieve (13X) an activated carbon (Norit R2030CO2). The impact the two regeneration methods on ...

Natural kaolin clay was used to successfully prepare 13X zeolite catalysts, which were modified by dealumination with citric acid. Acid leaching eliminates impurities and aluminum, improves the Si/Al ratio of framework. The X-ray diffraction (XRD) patterns both original zeolites same, indicating that crystalline frameworks not destroyed during process. fluorescence data dealuminated showed an i...

Pressure swing adsorption (PSA) technology is used in medical oxygen concentrators for selective of nitrogen under pressure from air to produce oxygen-enriched breathing. The functional material aluminosilicate zeolite like Li-13X, 5A (LTA) with a relatively high Al-content. It selectively adsorbs the into their molecular sieves due strong quadrupolar interaction between adsorbed and electrical...

Composite sorbents based on silica, polyethylene glycol (PEG) and containing calcium chloride were successfully synthetized using the sol-gel method. Their heat storage performance was investigated in a lab-scale open fixed-bed reactor. The silica/PEG matrix managed to stabilize hydrated when salt content equal 32 wt% despite partial deliquescence. presence of crystallized phase CaCl2/PEG resul...

This research evaluated the importance of the adsorption properties of chitosan a chitosan/zeolite conjugate film for the removal of Cr(VI) ions from solutions in the 5-260 mg/L concentration range, when the pH was adjusted to 4.0 and 6.0. The uptake capacities of the films formed by chitosan and by the chitosan/zeolite conjugate were calculated by mass balance. The equilibrium isotherms were f...

About 60% of the energy input in chemical industry is discarded from plant. Energy saving can be achieved entire plant by recovering these waste heats and reusing them as power heat sources An adsorption pump has been developed for purpose regeneration such unused energy. In this study, saturated humid air was supplied to a device packed with 13X zeolite particles 4 mm diameter. The time variat...

The design of adsorption systems for separation CO2/N2 in carbon capture applications is notoriously challenging because it requires constrained multiobjective optimization to determine appropriate combinations a moderately large number system operating parameters. status quo the literature use nondominated sorting genetic algorithm II (NSGA-II) solve problem. This approach 1000s time-consuming...

Copper-exchanged faujasite (Cu-FAU) zeolites have been investigated in this work as promising adsorbent materials to further purify hydrogen produced via ammonia decomposition a membrane reactor. Samples prepared ion-exchange procedure using commercially available NaY, HY and 13X their performance was evaluated compared the one of parent zeolites. The introduction copper species framework demon...