88 research outputs found
Effects of the geometrical configuration of air-water mixer on the size and distribution of micro-bubbles in aeration systems
The objective of this work is to present a novel geometrical configuration for microbubble generators (MBGs) to improve dissolved-oxygen levels in water. Among various methodologies from the literature, Orifice and Venturi tubes have been considered as baseline cases. Experimental data from the literature are used to verify a computational fluid dynamics (CFD) case developed for a better understanding of the dynamics of MBGs. As a result, the validated CFD setup has been implemented on a modified Venturi-type generator, where air is injected coaxially with respect to the tube axis, whereas a helicoid wall at variable pitch angle is used. Results show a reduction in the mean bubble diameter distribution from the baseline Venturi tubes, particularly, at low-speed inlet velocities. This is of interest, especially to decrease the energy requirement for most common water aeration systems
Biomass production and identification of suitable harvesting technique for Chlorella sp. MJ 11/11 and Synechocystis PCC 6803
Le problematiche legate al fitoplancton nelle acque lacustri destinate ad uso potabile
Chemical oxidation of dissolved organic matter by chlorine dioxide, chlorine, and ozone:Effects on its optical and antioxidant properties
Soil geochemistry confines microbial abundances across an arctic landscape; implications for net carbon exchange with the atmosphere
Inkjet Printed Multi‐walled Carbon Nanotube Sensor for the Detection of Lead in Drinking Water
Polyaluminium chloride as an alternative to alum for the direct filtration of drinking water
- …