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Synthesis of kaolin-based zeolite Y and its application for adsorption of two carbonyl compound gases

Warzybok M., Warchoł J.

Czasopismo Inżynierii Lądowej, Środowiska i Architektury / Journal of Civil Engineering, Environment and Architecture

2018

z. 65, nr 1

13--26

The aim of the study was to synthesize zeolite Y based on natural clay mineral and to determine its potential for adsorption of carbonyl compounds. The synthesis route consisted of four steps: thermal activation of kaolin into metakaolin; aging of reaction mixtures at ambient temperature; crystallization of the reaction mixture; washing and drying of the final product. The reaction mixture consisted of metakaolin silica gel (SiO2), sodium chloride (NaCl) and sodium hydroxide (NaOH). All substrates were used at an intended molar ratio. The physicochemical properties of the synthesized adsorbent were attained through the advanced instrumental analysis. The adsorption of acetone and methyl ethyl ketone (MEK) on synthesized zeolite as well as on four commercially available adsorbents and three natural materials was examined in a dedicated home-made installation. The results showed, that the synthesized zeolite Y has the highest affinity for acetone over other adsorbents, while its affinity for MEK is only a little lower then AC. Additionally, adsorption isotherms of acetone and MEK on zeolite Y were measured on a gravimetric balance. Experimental binding isotherms were fitted by a non-linear regression to five empirical equations. In both acetone and MEK cases, the best results of statistical tests were obtained for the Marczewski-Jaroniec model.

Dynamika biofiltracji metyloetyloketonu na naturalnym złożu z kory sosnowej

Chmiel K., Palica M.

Przemysł Chemiczny

2004

T. 83, nr 8

391-392

Przedstawiono wyniki badań biofiltracji metyloetyloketonu na złożu z frakcjonowanej kory sosnowej w zakresie zmian stężenia wlotowego do kolumny C1 = 1-100 mg/m3 i czasu kontaktu rk = 2,17-19,45 s. Określono skuteczność biodegradacji metyloetyloketonu w funkcji zmiennych procesowych na odcinku niestabilnej pracy złoża.

The rate of biofiltration of 1, 5, 13, 40 or 100 mg MEK/m3, through a 0.5-3.0 mm pine-tree bark bed, column height 0.25 or 0.45 m, ф 0.175 m, contact time range 2.17-19.45 s, was approx. directly related to bed charge and to MEK wt. concn. at inlet to biofilter. As the time of bed operation was increased, bed performance fell to attain a value corresponding to a quasi steady state. As the MEK contact time was protracted while the MEK concn. at inlet was kept fixed, bed performance rose. As the MEK concn. before column was increased, the rate of biodegradation rose.