Electropolymerization of a Cation-permeable Layer using 1-pyrrolyl-10-decanephosphonic Acid

2019 ◽  
Vol 19 (6) ◽  
pp. 191-198
Author(s):  
Ryan M. West ◽  
Mira Josowicz ◽  
Jiri Janata
Keyword(s):  
Permeable Layer

The impact of highly permeable layer on hydraulic system in a coastal aquifer

2012 ◽  
pp. n/a-n/a ◽  
Author(s):  
Kue-Young Kim ◽  
Weon Shik Han ◽  
Eungyu Park
Keyword(s):  
Coastal Aquifer ◽  
Hydraulic System ◽  
Permeable Layer ◽  
The Impact

scholarly journals Mechanisms on the Injection Conformance Reversion during Polymer Flooding of Offshore Heterogeneous Heavy-Oil Reservoirs

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Zhijie Wei ◽  
Xiaodong Kang ◽  
Yuyang Liu ◽  
Hanxu Yang
Keyword(s):  
Polymer Solution ◽  
Heavy Oil ◽  
Flow Resistance ◽  
Polymer Flooding ◽  
Production Performance ◽  
Oil Reservoirs ◽  
Resistance Force ◽  
Oil Viscosity ◽  
Permeable Layer ◽  
Heavy Oil Reservoirs

Injection conformance reversion commonly observed during polymer flooding in offshore heterogeneous heavy-oil reservoirs weakens the volumetric sweep of polymer solution and compromises its EOR results. To investigate its mechanisms and impact factors, one mathematical model to predicate injection conformance behavior is constructed for heterogeneous reservoirs based on the Buckley-Leverett function. The different suction capability of each layer to polymer solution results in distinct change law of the flow resistance force, which in turn reacts upon the suction capability and creates dynamic redistribution of injection between layers. Conformance reversion takes place when the variation ratio of flow resistance force of different layers tends to be the same. The peak value and scope of conformance reversion decrease and reversion timing is advanced as oil viscosity or permeability contrast increases, or polymer concentration or relative thickness of low permeable layer decreases, which compromises the ability of polymer flooding to improve the volumetric sweep and lower suction of the low permeable layer. The features of offshore polymer flooding tend to make the injection conformance V-type and create low-efficiency circulation of polymer in a high permeable layer more easily. These results can provide guidance to improve the production performance of polymer flooding in offshore heterogeneous heavy-oil reservoirs.

scholarly journals Location and chemical composition of semi-permeable layer of forage seeds

2013 ◽  
Vol 42 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Jing Zhou ◽  
Yanrong Wang ◽  
Zulfi Jahufer
Keyword(s):  
Electron Microscopy ◽  
Chemical Composition ◽  
Histochemical Staining ◽  
Bromus Inermis ◽  
Tracer Method ◽  
Membranous Structure ◽  
X Ray ◽  
Achnatherum Inebrians ◽  
Permeable Layer ◽  
Transmission Electron

The presence of the semi-permeable layer is determined in Roegneria nutans (Keng.) Keng, Achnatherum inebrians (Hance.) Keng, Hordeum vulgare var. nudum Hook. f., Triticale, Festuca sinensis Keng., and Bromus inermis Leyss. using the lanthanum nitrate tracer method, transmission electron microscopy and energy dispersive X-ray analysis. It was an amorphous membranous structure firmly attached on the external portion of the seed coat. The diversified chemical composition of the semi-permeable layer of the species studied is also analyzed by histochemical staining. R. nutans, A. inebrians, H. vulgare var. nudum, and Triticale were found to contain lipids in the semi-permeable layer. F. sinensis had pectin whereas B. inermis has cellulose in the said layer. DOI: http://dx.doi.org/10.3329/bjb.v42i1.15802 Bangladesh J. Bot. 42(1): 23-29, 2013 (June)

Risk Analysis of Permeable Layer in Pavement Subsurface Drainage System

2019 ◽  
Vol 145 (3) ◽  
pp. 04019028 ◽  
Author(s):  
Shubham A. Kalore ◽  
G. L. Sivakumar Babu ◽  
Rajib B. Mallick
Keyword(s):  
Risk Analysis ◽  
Drainage System ◽  
Subsurface Drainage ◽  
Permeable Layer

Weak 2D Convective Plumes in a Sloping Permeable Layer

2009 ◽  
Vol 77 (2) ◽  
pp. 229-242 ◽  
Author(s):  
Robert McKibbin
Keyword(s):  
Permeable Layer

scholarly journals Analisis Penurunan Parameter Pencemar Limbah Cair Laundry dengan Multi Soil Layering (MSL)

2019 ◽  
Vol 2 (1) ◽  
pp. 36
Author(s):  
Hadrah Hadrah ◽  
Monik Kasman ◽  
Karunia Tri Septiani
Keyword(s):  
Loading Rate ◽  
Domestic Wastewater ◽  
Organic Content ◽  
Organic Substances ◽  
Total Phosphate ◽  
Permeable Layer ◽  
Permeable Media ◽  
Impermeable Layer ◽  
Wastewater Pollutants ◽  
Derivatives Of

Laundry wastewater is grey water, which is part of domestic wastewater, which is not through the toilet. Laundry wastewater contains COD, BOD, TSS, Total Phosphate, pH, MBAS which includes derivatives of organic substances so that the accumulation causes an increase in the organic content of water or groundwater. The purpose of this study was to observe the effects of the hydraulic loading rate (HLR) and permeable layer (zeolite and gravel) on the efficiency of decreasing laundry wastewater pollutants. Variations in HLR consist of 500 l / m2 day, 750 l / m2 day and 1000 l / m2 day. In this study, laundry wastewater was introduced gravitationally into the MSL reactor with dimensions of 15x50x50 cm. The MSL reactor consists of impermeable layers and permeable layers. The impermeable layer is a layer consisting of a mixture of soil and charcoal with a ratio of 2: 1, and a permeable layer consisting of layers of gravel (MSL 1) and zeolite (MSL 2) with a diameter of 0.25 - 0.5cm. Based on the results of the study, the HLR and permeable media have an effect on the decrease of laundry wastewater pollutant parameters. The highest decrease in pollutants for COD, BOD, TSS, Total Phosphate, pH, and MBAS parameters was obtained at HLR 1000 l/m2.d with the highest percentage reduction is 95% at MSL 1 and 92% at MSL 2. Decreasing pollutant concentration of laundry wastewater is higher in MSL 2 (permeable layer of zeolite) compared to MSL 1 (permeable layer of gravel).

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