Elifantz H.,Hebrew University of Jerusalem |
Elifantz H.,Israel Agricultural Research Organization |
Horn G.,Global Environmental Solutions Ltd. |
Ayon M.,Hebrew University of Jerusalem |
And 2 more authors.
FEMS Microbiology Ecology | Year: 2013
The formation of biofilms and biofouling is a common feature in aquatic environments. The aim of this study was to identify the primary colonizers of biofilm formed in Eastern Mediterranean Coastal water at different seasons and follow early dynamics of biofilm community development. Pre-treated coastal seawater and biofilm samples were collected from six different sampling events of 2 weeks' duration each during 1 year. The microbial community composition and specific abundance were estimated by 16S rRNA gene clone libraries and fluorescence in situ hybridization-confocal laser scanning microscopy (FISH-CLSM), respectively. The biofilm formed over the course of the year was fairly consistent in terms of community composition and overall abundance with the exception of spring season. Alphaproteobacteria (30-70% of total bacteria), in particular Rhodobacteraceae, were the dominant bacteria in the biofilm, regardless of season, followed by Bacteroidetes (5-35%) and Gammaproteobacteria (6-35%). There was a decrease in relative abundance of Alphaproteobacteria and an increase in the abundance of Bacteroidetes between the initial and 2-week-old biofilm. This observation may aid man-made facilities that have to deal with biofilm formation and help the development of appropriate strategies to control those biofilms. © 2013 Federation of European Microbiological Societies. Published by John Wiley & Sons Ltd. Source
Hasson D.,Technion - Israel Institute of Technology |
Segev R.,Technion - Israel Institute of Technology |
Lisitsin D.,Global Environmental Solutions Ltd. |
Liberman B.,IDE Technologies |
Semiat R.,Technion - Israel Institute of Technology
Desalination | Year: 2011
The present paper describes pilot plant development of a novel process enabling increase of water recovery in brackish water desalination without using any chemicals. This is achieved by precipitating the scaling salts of a carbonate-rich concentrate by increasing the pH through air stripping of CO2 from the solution. Additional permeate is extracted from the treated concentrate by a secondary RO unit. The pilot plant data confirmed that a precipitation conversion of CaCO3 of at least 70% can be achieved by the aeration process at a retention time of about 2 h in the precipitation vessel. Integration of the concentrate treatment with the primary desalination process enabled increase of the overall water recovery from 78% to 90%. Higher recoveries exceeding 95% can be anticipated in processing concentrate solutions of sufficiently high carbonate content. © 2011 Elsevier B.V. Source
Global Environmental Solutions Inc. | Date: 1995-08-31
scrap, semi-finished and finished metal recovered from the demilitarization of military products and equipment.
Global Environmental Solutions Inc. | Date: 1999-08-30
Global Environmental Solutions Inc. | Date: 2008-08-12
INORGANIC PACKING MATERIAL, NAMELY, SELECTED POROUS IGNEOUS ROCK FOR THE PACKING OF BIOLOGICAL SCRUBBERS USED IN WASTEWATER TREATMENT AND ODOR CONTROL.