Yield Comparison of Sesame Cultivars and Their Physiological Growth Indices Under Chemical and Biological Potassium Fertilizer Applications

To compare the yield and physiological growth indices of three Iranian sesame cultivars under the application of chemical and biological potassium fertilizers a pot experiment was conducted in the summer of 2015 in greenhouse. This study was performed as factorial arrangement based on a randomized complete block design with three replications. The potassium fertilizer application, based on soil test, was in four levels (K1:K2SO4 50%, K2: Bacillus circulans L., K3: Bacillus megatherium L. and K4: KSB1+KSB2 and three sesame cultivars used were Ultan, Yekta and Dashtestan 2. The plant samples were taken from 30 to 105 days after sowing with 15 days intervals. LAI, TDM, CGR, NAR and RGR were measured during the different growth stages. The results showed that the Yekta cultivar produced the highest seed yield (18.62 g.plant-1). Ultan produced highest growth rate as compared to the other cultivars. Furthermore, it responded differently to the application of biologic KSB1 fertilizer as compared to the other treatments and cultivars. KSB1 improved and accelerated plant growth rate at 90 days after sowing. While, the use of chemical potassium sulfate, KSB2 and combined application of Bacillus circulans L. with KSB1 and 2 improved growth 105 days after sowing

Experimental Measurement for Adsorption of Ethylene and Ethane Gases on Copper-Exchanged Zeolites 13X and 5A

New experimental data for adsorption of ethylene and ethane on zeolite 13X and zeolite 5A are reported at a temperature range of 288-308 K and pressure up to 20 bar. The cation exchange for zeolites 13X and 5A was performed using copper, and the observed adsorption capacities of the copper-exchanged zeolites were measured. The equilibrium adsorption capacities of these adsorbents toward ethylene and ethane were compared. The copper-exchanged zeolites showed improved adsorption capacities toward both gases, where CuA was found to have the highest adsorption capacity. However, the copper-exchanged zeolites 13X and 5A underperformed in comparison to the expected high selectivity for ethylene/ethane separation. The data utilized for expressing the adsorption isotherm were successfully correlated with the Toth model, and the parameters for this model were calculated as reported in this paper

Systematic measurements of CH4 and CO2 adsorption isotherms on cation-exchanged zeolites 13X

Experimental data for adsorption of pure carbon dioxide, methane, and nitrogen on zeolite 13X granules at different temperatures (288.15-318.15 K) and pressure up to 20 bar are reported. The cation of adsorbent is exchanged with H+, Li+, and Cu2+, and the adsorption of pure gases is measured. The equilibrium adsorption isotherms of gases are performed with a static volumetric adsorption instrument, which was designed and built. The results show that the adsorption capacity of carbon dioxide is higher than that of methane and nitrogen and that the cation exchange improved the adsorption capacity of pure gases. The LiX adsorbent has the highest adsorption capacity among the studied adsorbents. However, the relative selectivity of carbon dioxide over methane for zeolite 13X has the highest value of 30.48. The CuX adsorbent shows the highest selectivity for carbon dioxide over nitrogen. The adsorption isotherms for all of the pure gases are fitted successfully with the Toth model