Analyses of regional-scale synoptics and air-mass trajectories, local-scale atmospheric measurements (wind direction and speed, air temperature, dust load, SO 2 and NO x concentrations in the air, rain amount and intensity), and chemical and isotopic compositions of rainwater collected in the coastal city of Ashdod, Israel, were used to identify the various contributing sources to rainwater sal...

conclusions the ammonia degassing is a simple and suitable technology for ammonia removal at high concentration. undesirable removal efficiency (17%, 35.5% and 31%) can be occurred in suitable ph 11 in the presence of lower ammonia concentrations (50, 100 and 200 mg/l). results according to obtained results, the maximum removal efficiencies were determined 17%, 35.5%, 31%, 66%, and 85.5%, for 5...

The study of the gas nitriding method, which allows obtaining high-quality diffuse layers in high-speed steel P6M5 on basis an internal nitrogen hardening zone with no brittle nitride zone, has been viewed. Research results phase composition nitrided a change potential atmosphere during dilution ammonia are presented. Nitrided tool increased resistance drilling constructional and titanium alloy...

This research focused on the evaluation of potential use a soil-isolated bacteria, identified as Staphylococcus equorum, for microbial-induced calcite precipitation (MICP) and copper removal. Isolated bacteria were characterized considering growth rate, urease activity, calcium carbonate precipitation, tolerance minimum inhibitory concentration (MIC) precipitation. Results compared with Sporosa...

The precipitation of struvite (MgNH4PO4.6H2O) from wastewater streams simultaneosuly recovers nitrogen (N) and phosphorus (P) for reuse as fertilisers. Struvite crystallisation is controlled by pH, saturation index, temperature other ions in the solution (e.g., Ca2+, Mg2+ CO32?). This work studies effect pH on removal via quality resulting precipitate product (i.e., crystal size, morphology pur...

The efficiency of Ni/TiO2 catalysts for renewable diesel production was evaluated in the present study. Two series were synthesized and characterized using various physicochemical techniques (N2 physisorption, XRD, SEM, XPS, H2-TPR, NH3–TPD). In first catalysts, successive dry impregnations (SDI) used depositing 10, 20, 30, 50, 60 wt.% Ni. yield towards is maximized over catalyst with 50 Ni loa...

Nickel oxide (NiO) nano-size powder is synthesized using nickel (II) acetate tetrahydrate, sodium lauryl sulfate (SLS) and ammonia as precursors. Applied surfactant is anionic surfactant. The sample was characterized by FT-IR, X-ray diffraction (XRD), scanning electron microscopy (SEM). The results obtained confirm the presence of nickel oxide nano-powders produced during chemical precipitation...