Papers – Page 4 – TechConnect Briefs

Effect of surfactant on TiO2/UV mediated heterogeneous photocatalytic degradation of DDT in contaminated water

Sinha S., Tapia-Orozco N.G., Acosta-Ramírez D.S., Rodríguez-Vázquez R., CINVESTAV, MX

The toxic effects from the use of pesticides are of great concern to the environment. The pesticides containers are not treated according to the Mexican normativity and hence increase the pollutant levels in the environment, [...]

A Sonoelectrochemical Synthesis of Nanosized CdS on TiO2 Nanotube-Array for Enhancing Photoelectrochemical Reactivity

Wang C-L, Sun L., Yun H., Li J., Lin C.J., Lai Y.K., Lin C.J., Xiamen University, CN

The nanoparticles of CdS were precipitated onto a self-organized TiO2 nanotube array photo-electrodes by using sonochemical synthesis combining with constant current electrochemical deposition. It is indicated that the CdS nanoparticles with average diameter of 28.1 [...]

Mobile thermal unit for PCB destruction

René Cornellier J., FRALMA Technologies, CA

FRALMA™ Technologies has designed and built a mobile device especially to destroy hazardous material, more specifically PCB-contaminated oils. The major benefit offered by FRALMA ™’s device is its mobility. It can easily move around in [...]

Removal of Heavy Metals From Aqueous Solutions with Calcium Alginate Beads

Luna-Pineda T., Román-Velázquez F., University Of Puerto Rico at Mayaguez, PR

The present research is focused on the development of a bio-sorbent based on alginate beads. The alginate is a natural polymer extracted from brown seaweed with capability of hosting divalent cations in gel state, which [...]

Enviroquip Membrane Bioreactor Systems – Novel Wastewater Treatment Process for Enhanced Nutrient Removal

Zhang K., Lewis C., Swanson M., Ball A., Enviroquip, US

Traditional wastewater treatment technologies are not sufficient in protecting sensitive receiving waters. Agencies are required to meet Enhanced Nutrient Removal (ENR) limits that are increasingly difficult to achieve (e.g. 3.0mgN/l and 0.1mgP/l). Various techniques are [...]

Innovations in Energy Efficient Decentralized Wastewater Treatment Systems:

Behrends L.L., ReCiprocating Water Technologies LLC, US

This paper will provide a brief overview of differences between conventional centralized wastewater treatment systems and the more recent decentralized systems. Brief comparisons will be made regarding differences in scalability, economics, energy efficiency, and environmental [...]

Using Secuirty Monitoring Tool to Improve Operation of the Water Distribution System

Kroll D., Hach Company, US

The distribution system represents the last analytical frontier in the water quality industry. Since 9/11, numerous communities have installed multi-parameter monitoring stations in locations throughout the distribution system as early warning systems based on potential [...]

AltelaRain Produced Water Treatment & Re-use

Godshall N.A., Bruff M.J., Altela Inc., US

Altela Inc. offers a fundamentally new water desalination product, the AltelaRainSM System (ARS) that inexpensively removes nearly 100% of dissolved salts and other contaminants from industrial wastewaters and undrinkable brackish waters. Altela has taken the [...]

Sustainable Desalination of Fresh Water

Stover R.L., Energy Recovery Inc, US

Seawater reverse osmosis is an advanced desalination process used to filter water in which seawater is forced through a semi-permeable membrane, producing pure water on one side and concentrated brine on the other. The process, [...]

Waste water is gold under our feet

Studer U., Rabtherm AG, CH

Each winter, we can see the heat, warm air, coming up the sewer shafts in city streets and we should realize the enormous heat potential that is down there and just flows away, untapped and [...]