Research Abstracts

The main obstacle for a wider use of membrane bioreactors (MBRs) for wastewater treatment is membrane fouling, which increases operating costs. For a more efficient control of membrane fouling in MBRs, an understanding of the mechanisms of membrane fouling is important. We conducted two separate pil

Among the membrane processes, membrane bioreactor (MBR) technologies are becoming an innovative and promising option for wastewater treatment and reuse. In this study the performance of the submerged membrane bioreactor was studied with an addition of MPE50, and it was compared against a sponge subm

If the notion of sustainable critical flux can be analysed in regards to hydrodynamics conditions imposed closed to a defined membrane surface taking into account the suspension characteristics, it is important to integrate the actual heterogeneity of filtration conditions relatively to the individu

Research and development work to optimize the BIOSORTM-Manure, a biofiltration process for pig manure treatment, have been realized on the site of a piggery (Île d’Orléans, Québec, Canada) using a 400 m3 biofiltration system. Despite strong variations in BOD5 (10,000–20,000 mg/L), in SS (10,000–20,0

Membrane fouling mitigation in a membrane bioreactor (MBR) performance has been the main focus of research in recent times and researchers have proposed many mechanisms based on biological, hydrodynamic and physicochemical approaches. From this perspective, this paper has been divided into two main

The possibility of alkaline scale precipitation and removal by electrolytic devices has long been recognized. The scale removal principle of the electrochemical technique is based on the creation of a high pH environment around the cathode by water and oxygen reduction reactions which release hydrox

An economic study was conducted to evaluate the costs of fluoride removal by electrodialysis on the basis of industrial and economic data. The investment and operating costs were estimated for an industrial plant with a capacity of 2200 m3/d water consumption for 50,000 per capita according to Moroc

The present work dealt with the characterization and treatment of liquid wastes produced during the hydrometallurgical recovery of germanium (Ge) from fly ash. The main metals causing reasons for environmental concern were arsenic (As), nickel (Ni) and antimony (Sb). Precipitation using calcium hydr

The decolorization and degradation of Rhodamine B (RB) were investigated using UV radiation in the presence of H2O2 in a batch photoreactor at different light intensities. H2O2 and UV light have a negligible effect when they were used on their own. Removal efficiency of RB was sensitive to the opera

In Kuwait, the daily consumption per capita of electric power is 14,000 kWh, and of desalted water is 600 L. These are among the highest in the world, and the total consumption of each is almost doubled every 10 years. The cogeneration power desalting plants CPDP producing these two commodities cons