Baker's yeast effluent is a major source of pollution with a high organic load and dark colour. It can be treated by using advanced oxidation processes (AOPs). AOPs, such as ultrasonic irradiation, are ambient temperature processes involving the generation of free radicals. We have investigated sonocatalytic treatment of baker's yeast effluent by using ultrasound. TiO2–ZnO composites were used as sonocatalysts to increase the efficiency of the ultrasonic irradiation. The TiO2/ZnO composite was prepared by two different methods. Ultrasonic irradiation or mechanical stirring was used to prepare the TiO2–ZnO composite, and an ultrasonic homogenizer with a 20 kHz frequency was used to treat the baker's yeast effluent. We studied the effects of several parameters, including the molar ratio of TiO2/ZnO, calcination temperature, calcination time and catalyst amount, on the sonocatalytic treatment of the effluent. According to the results, the decolorization rate was 25% when using the composite TiO2/ZnO prepared at a 4:1 molar ratio and treated at 700 °C for 60 min, and the optimum catalyst amount was 0.15 g/l.
CPI Installs Catalytic Oxidizer at Pharmaceutical Mfg Company
Catalytic Products International (CPI) recently completed the installation of a new VECTOR Series Catalytic Oxidizer (CatOx) at a Western USA manufacturer of pharmaceutical products for the abatement of Volatile Organic Compounds (VOCs). This new CPI VECTOR-15,000 Catalytic Oxidizer replaces an older 14,600 scfm oxidizer from a competitor which was used to treat the exhaust from two (2) fluidized bed coating processes. The existing oxidizer suffered serious internal degradation and heat damage due to burner...
Transition metals cobaltites spinel for depollution of NOₓ emissions using SCR technology
Abstract The catalytic performance of various transition metal (M = Cu, Mn, and Ni) cobaltites prepared by nanocasting method were investigated for the selective catalytic reduction (SCR) of NO under lean burn conditions. KIT-6 was used as a hard template in the nanocasting method for preparation of catalysts. The catalyst samples were characterized by various techniques such as XRD, low-temperature N2 physisorption, SEM-EDS, and XPS. The catalysts were examined for the SCR of NO by NH3 and H2-LPG in a packed...
Air pollution regulations drive deployment of flexible abatement solutions - Case Study
To address the growing complexity of air pollution regulations, which have to address a multi-tiered array of local authority, national and international requirements, AirProtekt of Cambridge is offering a total package air pollution service that embraces process assessment, project design, supply of the air pollution equipment, installation and commissioning. Modern Air pollution regulations increasingly call for the deployment of more flexible abatement systems and being a leading air pollution control specialis...
Expert Interview: Pushing Air Pollution Control Technology Forward
Catalytic Products International has a rich history of innovation and expertise in the field of air pollution control technology, as well as a goal of providing our customers with the knowledge that will help them meet their air pollution control needs. As part of our ongoing series of blogs in which we interview members of CPI’s team, we spoke to Dennis Lincoln, the company’s former president (who is now retired). Dennis began working with CPI in 1973, when he was hired by founder Erwin Betz and...
Case Study - Training W. R. Grace & Co. personnel is easy with JHA
W. R. Grace is a global chemical manufacturing company specializing in catalyst and engineered material chemical production for over 60 years. W. R. Grace specifically focuses on process catalysts associated with chemical manufacturing, and specialty silica gel.SituationAs global leader in catalyst production, W. R. Grace relies on research and trained operators to help manufacture materials used in the production of various grades of gasoline, coatings, consumer, industrial, packaging, and pharmaceutical applicati...