Research Abstracts

Current research has shown that pre-treatment of feed water with the so-called DeNutritor reduces the biofouling rate on membranes Reference RO module DeNutritor RO module 1st cleaning 2nd cleaning 3rd cleaning Configuration 1 Configuration 2 4th cleaning 5th cleaning (only reference module) 9500 10

Radioimmunoassay (RIA) is a laboratory technique within Nuclear Medicine that generates a great volume of radioactive liquid wastes. Generally, these wastes are temporarily stored in the sanitary centre for partial activity decay and then they are managed by an authorized company. However, sometimes

Process design for a 15 mgd (2370 m3/h) reverse osmosis (RO) plant in El Paso, Texas, in the desert area of the US southwest presents many challenges. High recoveries in the pilot plant were limited by silica and barium sulfate scaling. Following testing at 85–90% recovery using a silica polymerizat

A thermoeconomic analysis of a cogenerative system with steam bleedings produced starting from the thermal energy recovered in a municipal solid waste thermovalorization plant is presented. The authors assume that the bled steam is used to feed a seawater multi-stage flash (MSF) desalination plant.

The influence of sour substances (citric, acetic, lactic and tartaric acids) on the oscillation pattern of liquid membrane (nitromethane) oscillators containing cationic (benzyldimethyltetradecylamonium chloride) or anionic (sodium oleate) surfactant was investigated. The citric acid concentration e

Studies on the encapsulation of the commercial granular fertilizer, NPK 6-20-30, with polysulfone (PSF) as a coating were performed. In order to improve the properties of coatings, the granules of previously coated fertilizer (wet method) were sprayed with a polymer solution or pure solvent (N,N dim

The parameters of the model comprising the polarization layer and the Spiegler–Kedem–Katchalsky model of membrane transport were determined for a series of nanofiltration membranes. Membranes with different NaCl retentions were chosen. The experiments were performed at the same hydrodynamic conditio

Diffusive transport of a substance through a membrane separating solutions of different concentrations leads to the formation of concentration boundary layers (CBLs) adjacent to its surfaces. This phenomenon, commonly referred as concentration polarisation, causes the permeability coefficient measur