Magnet-Assisted Selective Oil Removal from Water in Non-Open Channel and Continuous Oil Spills Clean-Up

2021 ◽  
pp. 120119
Author(s):  
Lei Xia ◽  
Faze Chen ◽  
Zexin Cai ◽  
Jiaqi Chao ◽  
Yanling Tian ◽  
...  
Keyword(s):  
Open Channel ◽  
Oil Spills ◽  
Oil Removal

Investigation of organic materials nature on petrol removal from water surfacee

2021 ◽  
pp. 75-83
Author(s):  
I.V. Bacherikova ◽  
◽  
S.B. Grinenko ◽  
L.S. Kuznetsova ◽  
V.O. Zazhigalov ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Organic Materials ◽  
Oil Spills ◽  
Water Area ◽  
Simultaneous Increase ◽  
Oil Removal ◽  
Optimal Parameters ◽  
Oil Spill Response ◽  
Oil Adsorption ◽  
Positive Results

The properties of some organic materials in the removal of oil from water area were studied. It was shown that available materials as technical wool and sintepon can be used as effective sorbents for petroleum removal from water area. The sample mechanical wringing of these sorbents permits to return the part of adsorbed oil for its next use. The dependence of sorption properties (the adsorbed petroleum mass, specific oil adsorption, return of the oil and selectivity of petroleum removal) and petroleum removal from the number of absorption-release cycles was established. It was established that quantity of adsorbed oil decreases in other next step of removal but mass of oil returned increases in the process of mechanical wringing. The regeneration of these adsorbents by flushing in gasoline permits to obtained the initial properties in oil removal from water area. The sorption elements in the form of bags from linen with these materials were prepared. The dependence of the amount of oil removed by these sorption elements from the time of oil clearing of the water area process was determined and the optimal parameters of petroleum removal were established. It was shown that sorption elements on the base of these materials have adsorption capacity equal to 14-16 g of petroleum/g sorbent at selectivity of petroleum removal more than 70 % and oil recovery degree more than 80 % and the possibility their reusable use on oil spill response. The obtained positive results of oil removal from water area permit to propose in extreme cases of oil spills the available industrial products as jerseys, blankest, jackets etc. use successfully for petroleum spill response. The hydrophobization of these elements permits to improve their properties in oil removal from water area. As results of sorption elements modification the increase of adsorbed oil mass and specific petroleum removal at simultaneous increase of returned oil quantity for its next use and oil removal selectivity were established. It was established that synthesized sorption elements not inferior in properties known industrial sorbents for oil removal from water area.

Study on the Adsorption Efficiency of Carbonized Rice Hull Adsorption Bag for the Removal of Oil from Sea Water

2013 ◽  
Vol 295-298 ◽  
pp. 1254-1257 ◽  
Author(s):  
Ying Hui Liu ◽  
Hong Xin Li ◽  
Bo Tian ◽  
Mei Yu Zhao ◽  
Yu Bo Cui
Keyword(s):  
Equilibrium State ◽  
Oil Spills ◽  
Sea Water ◽  
Marine Ecosystem ◽  
Rice Hull ◽  
Oil Removal ◽  
Adsorption Efficiency ◽  
Adsorption Effects ◽  
Oil Concentration ◽  
Removal Efficiencies

With the increasing incidence of accidental oil spills, there is now a growing worldwide concern about the urgent need to purify oil-polluted sea water and conserve the marine ecosystem. Carbonized rice hull (CRH) prepared in the open air has been studied as adsorbent for purification of oil-polluted sea water. The adsorption effects of CRH and CRH absorption bag were both investigated. The results showed that under the dosage of 20 g/L and initial oil concentration of 746, 520 and 380 μg/L, the obtained oil removal efficiencies were 59.0%，78.8% and 67.1%, respectively. The adsorption bag counterpart indicated that under the initial oil concentration of 546 μg/L, an equilibrium state was reached for all the three kinds of package bags. The obtained adsorption amounts were 21.7, 25.5, 22.8 μg/g and the corresponding removal efficiencies were 59.7%, 70.0% and 62.6%, respectively.

PROTECTION OF NATURAL RESOURCES AGAINST OIL SPILLS BY BOOM ARRANGEMENTS

1995 ◽  
Vol 1995 (1) ◽  
pp. 853-854 ◽  
Author(s):  
Kau-Fui Vincent Wong ◽  
Diego Guerrero
Keyword(s):  
Natural Resources ◽  
Numerical Algorithm ◽  
Open Channel ◽  
Oil Spills ◽  
Flow Fields ◽  
Computational Approach ◽  
Experimental Results ◽  
Center Line ◽  
Volume Analysis

ABSTRACT An experiment and a computational approach were used to study flow fields around boom arrangements. A volume analysis was performed to quantify the effectiveness of the boom arrangements. The open-channel experiment showed that the booms were most effective when placed at 60° to the shoreline with cylinders placed along the center line. The results of the numerical algorithm were compared with the experimental results, which showed the influence of the cylinders and the recirculation formed between the walls to corral the oil.

The Statistical Analysis of Manual Removal of Stranded Oil Spills: Lessons Learned from Oil Spills Caused by the Russian Tanker Nakhodka

1999 ◽  
Vol 1999 (1) ◽  
pp. 1119-1121 ◽  
Author(s):  
Asami Shikida
Keyword(s):  
Oil Spill ◽  
Oil Spills ◽  
Japan Sea ◽  
Optimal Number ◽  
Lessons Learned ◽  
Maximum Efficiency ◽  
Oil Removal ◽  
The Japan Sea ◽  
Cumulative Amount ◽  
Spilled Oil

ABSTRACT In 1997, the Russian tanker Nakhodka, weighing 13,157 tons, sank off in the Japan Sea reportedly causing an oil spill. The oil spill had a serious impact on the shoreline environment. The purpose of this poster is to present a method to estimate the number of workers needed to clean the shoreline with maximum efficiency and minimum redundancy. In this study the parameters of manual oil removal are estimated and the framework in which those parameters work is explained. The results show that the amount of oil removed in a day correlates with the cumulative amount of oil removed up to that day and the number of people engaged in cleaning up on that day. The equation predicting the amount of oil is: S = 13.4827 E − 0.03874 C + 38458.1525 R2 = 0.918, F (2,34) = 192.28,p<0.01where S = the amount of oil removed in a day (liter), E = the number of people engaged in cleaning up on that day, C = the cumulative amount of oil removed up to that day (liter), R = correlation coefficient, F = degree of freedom. With this equation, the total amount of stranded oil that can be collected on a certain day and the number of people necessary to remove the spilled oil at the most efficient rate can be estimated. One can also calculate the optimal number of workers for the task.

scholarly journals Solar-assisted fast cleanup of heavy oil spills using a photothermal sponge

2018 ◽  
Vol 6 (19) ◽  
pp. 9192-9199 ◽  
Author(s):  
Jian Chang ◽  
Yusuf Shi ◽  
Mengchun Wu ◽  
Renyuan Li ◽  
Le Shi ◽  
...  
Keyword(s):  
Oil Spill ◽  
Heavy Oil ◽  
Oil Spills ◽  
Oil Removal ◽  
Viscous Oil ◽  
Oil Spill Cleanup ◽  
Highly Viscous Oil

Photothermal material-assisted solar-driven heavy oil removal is promising for highly viscous oil-spill cleanup.

Nanosponges could soak up oil spills

Nature ◽  
2008 ◽  
Author(s):  
Rachel Courtland
Keyword(s):  
Oil Spills

Open-channel-block induced by the neurotransmitter glycine in homomeric alpha1-GlyR and heteromeric alpha1/beta1- GlyR

2008 ◽  
Vol 35 (S 01) ◽  
Author(s):  
Y.P Song ◽  
F Schlesinger ◽  
S Petri ◽  
R Dengler ◽  
K Krampfl
Keyword(s):  
Open Channel ◽  
Channel Block ◽  
Open Channel Block

The Influence of Ascorbic Acid on Platelet Structure and Function

1975 ◽  
Vol 34 (01) ◽  
pp. 050-062
Author(s):  
Dale H Cowan ◽  
Richard C Graham ◽  
Patricia Shook ◽  
Ronda Griffin
Keyword(s):  
Ascorbic Acid ◽  
Open Channel ◽  
Channel System ◽  
Short Intervals ◽  
Platelet Survival ◽  
Artifactual Changes ◽  
Survival Studies ◽  
And Function ◽  
Induced Aggregation ◽  
Platelet Structure

SummaryTo determine the effect on platelet behavior of transient exposure of platelets to ascorbic acid, studies of platelet function and ultrastructure were done before exposure to ascorbic acid at pH 6.5, during exposure to pH 6.5, and after restoration of pH to pre-acidifìcation levels. The effect of ascorbic acid (A. A.) was compared to that of HCl and citric acid (C. A.). ADP- and collagen-induced aggregation of normal platelets were significantly impaired by both A. A. and C. A. but were less affected by HCl. The release of 14C-serotonin was significantly reduced by each agent. The ultra-structure of normal platelets brought to pH 6.5 by A.A. was normal. After neutralization, there was marked dilatation of the open channel system and loss of the disc shape. When platelets were brought to pH 6.5 by A. A., then neutralized, the aggregates which formed after stimulation by ADP or collagen were smaller than normal, the platelets were less closely approximated, and degranulation was less complete. The data show that exposure of platelets to ascorbic acid for short intervals impairs their function when measured after restoration of pH to levels compatible with maximal responses. Platelet survival studies using autologous platelets labelled with 51Cr in the presence or absence of ascorbic acid showed that the recovery of normal platelets was unaffected by ascorbic acid, whereas recovery of platelets from patients with idiopathic thrombocytopenic purpura, idiopathic thrombocythemia, and alcohol-related thrombocytopenia was markedly reduced. The injury resulting from the use of ascorbic acid in preparing platelets for studies of platelet survival in patients with disorders affecting platelets may impair the recovery of the cells, resulting in artifactual changes in the survival studies.

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