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An expanded granular sludge bed packed with porous sponge was started to treat wastewater contaminated by sulfide, nitrate, nitrite and organic carbon compounds. In inflow wastewater, potassium nitrate and sodium nitrite acted as electron acceptors, sodium sulfide acted as electron donor and glucose acted as organic carbon source. In the anoxic reactor, autotrophic denitrification happened together...
In this paper, the experimental and theoretical studies of RF capacitive-coupled-plasma (CCP) discharge at frequency of 81 MHz in Ar/CF4 and Ar/CHF3 mixtures were carried out. The density distributions of CF2, F, and H radicals in the interelectrode gap were measured by the spatially resolved emission and absorption spectroscopies. In the CHF3/Ar discharge, the measurements of plasma density and electron...
Gas-phase fast-atom bombardment (FAB) mass spectra of fullerence C 60 , polycyclic aromatic hydrocarbons, n-hydrocarbons, heterocyclic compounds, and others, by using high energy He, Ar, Xe, or isobutane beams, have been compared with the electron impact ionization (EI) and/or charge exchange ionization (CEI) mass spectra. The positive ion gas-phase FAB mass spectra measured show a fragmentation...
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