Water Technologies – Page 16 – TechConnect Briefs

Ion Rejection Properties of Nanofiltration Membranes With Inhomogeneous Charge Distribution

Szymczyk A., Zhu H., Balannec B., University of Rennes 1, FR

Ion rejection properties of NF membranes with inhomogeneous fixed charge distributions are investigated theoretically. It is shown that the occurrence of spatial inhomogeneities in the fixed charge concentration may lead to an enhancement of the [...]

Analysis of Membrane Filtration Efficiency in Removal of Metal Oxide Nanoparticles from Aqueous Nanoparticle Suspension in the Presence of Coagulation Pretreatment

Surawanvijit S., Kim M., Cohen Y., University of California, Los Angeles, US

The introduction of nanoparticles (NPs) into aqueous environment is expected to rise with increased manufacturing and use of nanoparticles. There is a need to identify efficient and methods for NP removal and such methods must [...]

New UV Technology for Point-of-Use Water Disinfection

Bilenko O., Bilenko Y., Shturm I., Bilenko O., Bilenko Y., Shatalov M., Gaska R., Sensor Electronic Technology, Inc., US

We will report on a record performance of an all-LED point-of-use water disinfection system that utilizes our deep UV LED lamps with peak emission wavelengths in the range from 270 nm to 280 nm. Results [...]

Innovative Cost-effective Pre-treatment for Desalination

Lean M.H., Seo J., Kole A., Volkel A.R., Chang N., Hsieh B., Melde K., Palo Alto Research Center, US

This paper describes an innovative technology to pre-treat feed water for desalination. An inline coagulation-flocculation-separation (CFS) system is detailed that does not require filtration or sedimentation. Advantages include: scalability, modularity, rapid processing, low energy, and [...]

Water, Waste, Emissions & Remediation

Generation of Transportation Fuel from Solid Municipal Waste Plastics

Sarker M., Natural State Research, Inc., US

Transportation fuels derived from imported fossil fuels are subjected to the price fluctuations of the global marketplace, and constitute a major expense in the operation of a vehicle. Emissions from the evaporation and combustion of [...]

Diesel Production from Waste Disposal using Catalytic Dissociation on Mn-zeolite Catalyst

Kim M.C., Lee K.B., Cheongju University, KR

The approach for catalytic dissociation of waste diaposal using various catalysts is presented. This approach includes two principal steps: a characterization of catalysts is used to determine the active site of prepared catalysts, and the [...]

New Kalina Cycle Systems for Biomass Applications

Kalina A., KALEX LLC, US

Three new Kalina Cycle power systems have designed for the utilization of biomass fuel. These systems offer drastic improvements in efficiency, (on the order of 40% to 60%,) and reduction in cost over current conventional [...]

Replacing natural gas with biogas in the methanol production

Kovac Kralj A., Univerity of Maribor, SI

The dependence of natural gas may be replaced by renewable sources of second generation - nonfood source. Methanol is produced from synthesis gas, which is produced from natural gas. Natural gas can be replaced by [...]

Development of ceramic support for methane reformer from alkali aluminosilicates

Martinello Savi B., Fernandes Silvano W., da Silva L., Bernardin A.M., University of the Extreme South of Santa Catarina, BR

This work deals with the initial development of a ceramic reformer based on alkali metal aluminosilicates coated with nickel for the generation of hydrogen from biogas (methane). The understanding of the microstructural evolution of silicon-aluminum [...]