Sorption properties of cellular carbon foam at water surface purification from petroleum products

2019 ◽  
Author(s):  
E. A. Raiskaya ◽  
I. S. Sabko ◽  
O. I. Krivonos ◽  
O. B. Belskaya
Keyword(s):  
Water Surface ◽  
Carbon Foam ◽  
Petroleum Products ◽  
Sorption Properties

scholarly journals Study of the influence of preparation parameters on sorption properties of porous collagen material

2021 ◽  
Vol 12 (2-2021) ◽  
pp. 177-179
Author(s):  
O. K. Molokanova ◽  
◽  
S. A. Shirokikh ◽  
E. S. Vainerman ◽  
M. Yu. Koroleva ◽  
...  
Keyword(s):  
Polymeric Materials ◽  
Petroleum Products ◽  
Optimal Concentration ◽  
Sorption Properties ◽  
Cross Linking ◽  
Optimal Parameters ◽  
Mass Ratio ◽  
Drying Temperature ◽  
Leather Waste ◽  
The Cross

In this work, the dependences of the sorption properties of the porous polymeric materials prepared from the cross- linked collagen on their composition and process specifications were studied. The optimal concentration of glutaraldehyde as a cross-linking agent was 0.5 wt %, the mass ratio of fish and leather waste was 1:1, and the drying temperature was 25 °C. Sorbent samples prepared using optimal parameters were effective in the sorption of petroleum products.

Removal of Petroleum Products from Water Surface by Chemically Modified Wood Waste

2019 ◽  
Vol 16 (12) ◽  
pp. 5261-5264
Author(s):  
Irina Yakovlevna Sippel ◽  
Gulnaz Albertovna Akhmetgaleeva
Keyword(s):  
Sorption Capacity ◽  
Water Surface ◽  
Oil Spills ◽  
Petroleum Products ◽  
Oil Products ◽  
Wood Waste ◽  
Engine Oil ◽  
Chemically Modified ◽  
Developed Surface ◽  
The Republic

In this work, they studied the possibility of woodwork waste use to remove oil products from the water surface by the sorption method. We used sawdust of ash (Fráxinus excélsior) and linden (Tília cordáta) as sorption materials, formed at the woodworking enterprises of the Republic of Tatarstan, as sorbates-fresh and used diesel engine oils, characterized by high boiling points and heavy fractional composition. To increase the sorption capacity of wood waste, they were chemically modified with the solutions of sulfuric, nitric, hydrochloric, perchloric, phosphoric and acetic acids with the concentration of 0.5, 1 and 3%. They determined the values of the maximum oil absorption of the initial and modified samples of sorption materials in relation to fresh and used motor oils. It was established that ash and linden sawdust modified with a 3% solution of nitric acid have the highest sorption properties. Determination of the sorption capacity by iodine and methylene blue showed that modified sawdust, in comparison with the initial samples, has a more highly developed surface, combining different types of pores: both micro- and mesopores. Experiments on modeling engine oil spills on water surface showed that chemically modified sawdust are effective sorbents of oil products, the degree of water purification reaches 99%.

Magnetic Petroleum Sorbent Based on Waste Kieselghur Sludge from Oil Extraction Industry for Removing Petroleum Products from Water Surface

2018 ◽  
Vol 284 ◽  
pp. 754-760 ◽  
Author(s):  
Irina V. Starostina ◽  
A.E. Nikitina ◽  
E.V. Porozhnyuk
Keyword(s):  
Water Surface ◽  
Iron Ore ◽  
Petroleum Products ◽  
Oil Extraction ◽  
Thermal Modification ◽  
Optimal Temperature ◽  
Hydrophobic Properties ◽  
Ferromagnetic Component ◽  
Burn Out ◽  
Iron Ore Concentrate

The method of obtaining magnetic petroleum sorbent for petroleum products spills cleanup from water surface, based on the mixture of waste kieselghur sludge from oil extraction industry and a ferromagnetic component - the finely-dispersed iron-ore concentrate (magnetite), has been suggested. It has been demonstrated that after the waste kieselghur sludge thermal modification in the temperature interval 430-500°С the burn-out of the organic matter is not complete – there remain the wax fractions of wax-like substances, contained in it. The obtained material becomes hydrophobic and oleophilic. The introduction of magnetite in amount of 10% provides the maximum oil-absorbing capacity of the petroleum sorbent – 3.05 g/g without reducing its hydrophobic properties. The value of the wetting angle amounts to 150°, and the water absorption is very low – no more than 2.1%. The optimal temperature of the magnetic petroleum sorbent production is 450°С. The obtained material in its petroleum-saturated state is highly buoyant within 24-120 hours, which provides enough time to clean up the water surface from petroleum products and to collect the sorbent.

scholarly journals Application of the mercury porosimetry method in the analysis of sorption materials

2020 ◽  
Vol 15 (1) ◽  
pp. 76-83
Author(s):  
R. K. Kostoev ◽  
D. S. Tochiev ◽  
E. I. Nilkho ◽  
Z. N. Sultigova ◽  
R. D. Archakova ◽  
...  
Keyword(s):  
Porous Structure ◽  
Rice Husk ◽  
Mercury Porosimetry ◽  
Test Sample ◽  
Petroleum Products ◽  
Oil Products ◽  
Sorption Properties ◽  
Static Conditions ◽  
Purification Of Water ◽  
Oil And Oil Products

Objectives. This study aims to establish the available porosity of a sorbent based on carbonized rice husk and investigate its sorption properties for oil and oil products.Methods. A rice-husk-based sorbent carbonized at 400°С for 30 min was selected as the subject. The porosity of this sorbent is analyzed with the help of mercury porosimeters, the Pascal 140 EVO and Pascal 240 EVO. The sorption properties of the sorbent are also studied when cleaning water containing oil and oil products.Results. The test sample is a bulk porous material with a pore volume of 0.015 cm/g; porosity higher than 15% was found, and the pore size distribution is shown. Studies were conducted on the sorption of oil and oil products as well as the possibility of using the aforementioned sorbent as a filtering material in the purification of water containing oil products. We investigated the sorption processes under dynamic and static conditions. The methodology for measuring the porous structure of solid materials on the mercury porosimeter, Pascal 140 EVO, was examined. The texture characteristics of the sorbent’s porous structure were determined, which is primarily the total volume of pores, the values of the specific surface area, and the volume of the microspores and mesopores.Conclusions. The materials studied can be used as sorbents with a developed porous structure for purification of water with dissolved and emulsified petroleum products.

scholarly journals Sorption of petroleum products with natural sorbents

2021 ◽  
pp. 47-52
Author(s):  
A. K. Iskendirova ◽  
M. K. Kurmanaliev ◽  
M. Sh. Suleimenova
Keyword(s):  
Water Surface ◽  
Petroleum Products ◽  
Natural Sorbents ◽  
Oil Film ◽  
Sorption Time

This article presents the results of a study of cleaning the water surface from contamination with petroleum products. Kulantaussky vermiculite, the birthplace of the Turkestan region, was studied as a sorbent. Studies have shown that the modified vermiculite is able to retain the sorbed oil up to 2 days after the expiration of the main sorption time (4 hours). It is established that the oil capacity depends on the thickness of the oil film, the sorption time and the amount of the sorbent taken.

Immunoferritin localization of intracellular antigens in positively stained frozen sections

1978 ◽  
Vol 36 (2) ◽  
pp. 168-169
Author(s):  
K. T. Tokuyasu
Keyword(s):  
Surface Tension ◽  
Water Surface ◽  
Thin Layers ◽  
The Other ◽  
Positive Staining ◽  
Frozen Sections ◽  
The Past ◽  
Ultrathin Frozen Sections ◽  
Definition Of

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).

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