...M. Mostafa; P.J. Van Geel Abstract Biological clogging of unsaturated soils is an important process that can lead to the development of a biomat and failure of biofilters used to treat various wastewater streams. Septic beds and peat filters used to treat septic tank effluent are important...

...M. Mostafa; P. J. Van Geel Abstract Biological clogging in unsaturated soils is an important concern in the design of biofilters that are used to treat wastewater in rural areas. Several conceptual models have been developed to simulate biological clogging in saturated flow systems but limited...

...M. Mostafa; P.J. Van Geel Abstract Biological clogging of unsaturated soils is an important process that can lead to the development of a biomat and failure of biofilters used to treat various wastewater streams. Several conceptual models have been developed to simulate clogging in saturated soils...

... Mostafa M. van Geel P.J. . 2015 . Impact of bioclogging on peat vs. sand biofilters . Vadose Zone J. 14 ( 6 ). doi:10.2136/vzj2014.07.0086 (this issue) . Nemati M.R. Simard F. Fortin J.-P. Beaudoin J. . 2015 . Potential use of biochar in growing media . Vadose Zone J...

..., cleaning of air using biofilters, remediation of contaminated soil sites by vapor extraction, and intrusion of radon and other contaminants into buildings due to changes in atmospheric pressure. Air permeability is relatively simple to measure both in the laboratory and in situ; however, in cases where...

... and then dried at 40°C for 48 h. Transmission electron microscopy (TEM) studies were performed on a Philips Biofilter microscope fitted with a LaB 6 filament and a lithium-drifted silicon detector, and operated at 120 kV. Samples were prepared by air drying a drop of very dilute suspension on a carbon...

... sites, designing soil vapor extraction systems for remediation, estimating landfill gas emissions to the atmosphere at old landfills, estimating aeration rates in agricultural soils, or designing biofilters for air cleaning. Air permeability further depends very strongly on the pore structure and water...

... . Lisitsyn , A.P. , 2008 . Marginal filters and biofilters of the World Ocean , in: Vereshchaka , A.L. (Ed.), Oceanology at the Beginning of the 21st Century [in Russian] . Nauka , Moscow , pp. 159 – 224 . Makogon , Y.F. , Holditch...

...Fig. 14. The World ocean biofilter of zoo plankton biomass (mg/m 3 ), the main filter-feeding agent in a layer 0 to 100 m deep [ 15 ]. The oceanic arid zones continue the continental arid zones. Biofiltration mass concentration (mg/m 3 ): 1 – < 25; 2 – 25–30; 3 – 50–100; 4 – 100–200; 5 – 200...

... been identified as being of major importance for the oceanic nature: (1) biofilter-1 (BF-1), the filtration by phytoplankton during photosynthesis (separation of biogenic and biophilic elements from suspension); and (2) biofilter-2 (BF-2), the filtration by zooplankton with formation of pelletal...

... to assess potential pollution in mangroves used as a natural biofilter for shrimp farm effluents (New Caledonia) : Marine Pollution Bulletin , v. 93 , p. 103 – 120 . de Rijk, S., 1995 , Salinity control...

.... Keski-Rahkonen O. . 1996 . Landfill fires in Finland . Waste Manage. Res. 14 : 377 – 384 . doi:10.1177/0734242X9601400405 Gebert J. 2006 . Passive landfill gas emission: Influence of atmospheric pressure and implication for the operation of methane-oxidising biofilters . Waste...

... conductivity of sand porous-media biofilters during wastewater infiltration: Experimental evaluation . J. Hydrol. 311 : 230 – 243 . Berli M. Eggers C.G. Accorsi M.L. Or D. . 2006 . Theoretical analysis of fluid inclusions for in situ soil stress and deformation measurements . Soil...

... Pugliese L. Poulsen T. Andreasen R. . 2013 . Biofilter media gas pressure loss as related to media particle size and particle shape . J. Environ. Eng. 139 : 1424 – 1431 . doi:10.1061/(ASCE)EE.1943-7870.0000771 Rolston D.E. Moldrup P. . 2002 . Gas diffusivity . In: Dane...

... and Sediments : The Geological Society of London Special Publication , v. 53 , p. 387 – 410 . Neori A. Cohen I. Gordin H. , 1991 , Ulva lactuca biofilters for marine fishpond effluents. II: Growth rate, yield and C: N ratio : Botanica Marina , v. 34 , p. 483 – 489 , doi: 10.1515/botm...

... bacteria, natural zeolites can become effective biofilters when compared with particles having smaller total surface areas such as quartz sand beds ( Tarasevich 1994 , Baykal and Guven 1997 ). The quality of water prior to treatment can vary considerably. Simple purification technologies...

... for treatment of combined sewer overflow . Sci. Total Environ. 380 : 196 – 209 . doi:10.1016/j.scitotenv.2006.11.044 Henrichs M. Welker A. Uhl M. . 2009 . Modelling of biofilters for ammonium reduction in combined sewer overflow . Water Sci. Technol. 60 : 825 – 831 . doi:10.2166...

... that diffusion methane is almost completely withdrawn from treatment on the sulfate-reduction biofilter, but the massive release of bubble methane (with the average bubble radius of 0.7 cm ( Shakhova et al., 2015 )) occurs in the mega-seep areas by the through discharge channels — gas outlets, as suggested...