Advanced Ammonia Oxidation by Adding Metabolic Mediator

Advanced Ammonia Casale Technologies for Ammonia Plants

Adding Value to Lignin by Oxidation in Supercritical Carbon Dioxide

BODY: The properties of lignins as emulsification agents in systems composed of water and oil are presented. Laboratory and industrial Kraft lignins were characterized in terms of surface activity and phase behavior in equilibrated Lignin−Oil−Water systems. Lignin−based emulsions were obtained for oil fractions of different Equivalent Alkane Carbon Number. The properties of emulsions obtained a...

Inhibition of Bacterial Ammonia Oxidation by Organohydrazines in Soil Microcosms

Hydroxylamine oxidation by hydroxylamine oxidoreductase (HAO) is a key step for energy-yielding in support of the growth of ammonia-oxidizing bacteria (AOB). Organohydrazines have been shown to inactivate HAO from Nitrosomonas europaea, and may serve as selective inhibitors to differentiate bacterial from archaeal ammonia oxidation due to the absence of bacterial HAO gene homolog in known ammon...

Degradation of Atrazine by Advanced Oxidation Processes

Advanced oxidation processes like ozonation (O3) and ultrasonic irradiation (US) can be employed for the removal of recalcitrant compounds from water matrices. Atrazine is a pesticide which has been banned in the EU countries, since it is toxic and potentially carcinogenic even in very small concentrations. After their use in agricultural areas, the pesticides tend to leave residuals on the soi...

The kinetic study of the AZo Dye Decolourisation by advanced oxidation process

In the present study, advanced oxidation treatment, UV/ was applied to decolourisation of Acid Orange 8 (AO8). The UV radiation was carried out with a 15 W low-pressure mercury lamp. Kinetic model for the decolourisation of the dye was developed based on experimental results and known chemical and photochemical reactions. The observed kinetic reaction constant was determined and correlated as a...