In order to clarify the immunomodulating properties of ozone, we have investigated: a) the effects of stimulation on isolated peripheral human blood mononuclear cells (PBMC) from normal donors with either ozone or ozonated serum; b) the range (in terms of O3 concentrations) of the therapeutic window; c) the stimulatory and toxic effects and d) the pattern, of both proinflammatory and immunosupp...

Many drinking water utilities have recently changed or are seriously considering changing their disinfection practice from chlorine to some alternative treatment process. However, most of these utilities are changing their disinfectants without evaluating chemical impacts. Therefore, a research cooperative agreement was developed with Jefferson Parish, LA, to evaluate four parallel streams trea...

Four commercially available membrane bioreactor (MBR) systems were operated at the pilot scale, to investigate performance during the reclamation of municipal wastewater. The MBR performance was evaluated under a variety of operating conditions, including two types of feed wastewater (raw and advanced primary effluent), hydraulic retention times (HRTs) ranging from 2 to 6 hours, and permeate fl...

The performance stability and its recovery mechanisms of a partial nitritation-anammox process were investigated. A one-stage airlift enhanced micro-granules (AEM) system was operated for 650 days continuously to treat 50 mg-NH4/L wastewater. During the stable stage, high nitrogen removal efficiency 72.7 ± 8.4% lasting 230 successfully achieved under 0.28 L/min aeration rate 0.10–0.20 mg/L diss...

Ozone (O3) has attracted much attention because of its key role in human health and disease, and its detection is of great importance for various biochemical studies as well as environmental evaluation. Here we develop a simple and practical spectroscopic off-on O3 probe based on resorufin and the specific reaction of but-3-enyl with O3. The probe shows an extremely low background spectroscopic...

Characterizing mega-city pollution with TES O3 and CO measurements C. Shim, Q. Li, M. Luo, S. Kulawik, H. Worden, J. Worden, A. Eldering, G. Diskin, G. Sachse, A. Weinheimer, D. Knapp, D. Montzca, and T. Campos Jet Propulsion Laboratory, California Institute of Technology, CA, USA NASA Langley Research Center, CO, USA National Center for Atmospheric Research (NCAR), VA, USA Received: 28 August ...

background: the use of alternative disinfectants and the control of natural organic material are two approaches that are typically applied in water treatment utilities to reduce the formation of chlorinated disinfection by-products in recent years. catalytic ozonation as a new technology is used to promote the efficiency of the single ozonation processes. the purpose of this study was to invest...

The removal of dyes from wastewater is one the biggest problems in textile industry for
 both environment and manufacturers. This study examined possibility applying ozone 
 (O3) O3 combination with ultraviolet (UV) to treat a mixture synthetic containing five different (Acid Red 17, Acid Yellow 11, Direct 12, Blue 86 Mordant Violet 40) for decolorization efficiency chromophore anchor...