Simply realizing durable PVDF/candle soot foam with excellent solar absorption for solar-assisted recovery of heavy oil spill

ABSTRACT A compact oil spill recovery system made up of a special oil suction float, an eductor-driven hydraulic fluid conveying unit, an oil/water separating unit, etc., was devised to the basic design concept of the previously-developed Mitsubishi hydraulic tanker desludging system and installed in a small, self-propelled, twin-hull craft. A 9.60 m long, 4.10 m wide, and 1.40 m deep experimental oil spill recovery ship completed in this manner successfully cleaned up a slick of heavy oil, 7 m × 30 m in area and 0.7 – 2.0 mm in film thickness, in less than three minutes at 0.5 – 1.0 kt and proved very stable, steerable, and easy to operate. Oil content of water at the outlet of the oil/water separating unit was less than 1 ppm. A range of oil spill recovery ships have since been designed, fully weighing opinions of potential customers as regards such items as economy of operation, and capacity.

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Montmorillonite mitigates the toxic effect of heavy oil on hydrocarbon-degrading bacterial growth: implications for marine oil spill bioremediation

ENERGYO ◽

10.1515/energyo.0019.00012 ◽

2018 ◽

Author(s):

S. K. Chaerun ◽

K. Tazaki ◽

M. Okuno

Keyword(s):

Toxic Effect ◽

Oil Spill ◽

Bacterial Growth ◽

Heavy Oil ◽

Marine Oil

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The effects of oil-spill removers (‘detergents’) on the gastropod Nucella lapillus on a rocky shore and in the laboratory

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315400038108 ◽

1969 ◽

Vol 49 (4) ◽

pp. 1067-1092 ◽

Cited By ~ 29

Author(s):

G. W. Bryan

Keyword(s):

Oil Spill ◽

Heavy Oil ◽

Rocky Shore ◽

Oil Pollution ◽

Nucella Lapillus ◽

Detergent Treatment

The effects of oil-spill removers (‘detergents’) on a population of the dogwhelk Nucella lapillus have been studied at Porthleven in South Cornwall, where heavy oil pollution occurred following the ‘Torrey Canyon’ incident in March 1967. Nucella is one of the shore animals which are most resistant to ‘detergent’ treatment, but at Porthleven the species was wiped out in the harbour and the majority of animals were killed on the reef nearby.

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Interaction between clay minerals and hydrocarbon-utilizing indigenous microorganisms in high concentrations of heavy oil: implications for bioremediation

Clay Minerals ◽

10.1180/0009855054010159 ◽

2005 ◽

Vol 40 (1) ◽

pp. 105-114 ◽

Cited By ~ 43

Author(s):

Siti Khodijah Chaerun ◽

Kazue Tazaki ◽

Ryuji Asada ◽

Kazuhiro Kogure

Keyword(s):

Clay Minerals ◽

Oil Spill ◽

Heavy Oil ◽

Control Sample ◽

The Sea Of Japan ◽

High Concentration ◽

Microbial Cells ◽

Cell Complexes ◽

High Concentrations ◽

Hydrocarbon Degraders

AbstractThis study focused on whether the presence of clay minerals (montmorillonite and kaolinite) in marine or coastal environments contaminated with high concentrations of heavy-oil spills were able to support the growth of hydrocarbon degraders to enable bioremediation. The bacterial growth experiment utilizing ~150 g/l of heavy oil (from theNakhodkaoil spill) was conducted with 1500 mg/l of montmorillonite or kaolinite. Bacterial strainPseudomonas aeruginosa(isolated from Atake seashore, Ishikawa Prefecture, Japan), capable of degrading heavy oil, was employed in combination with other hydrocarbon degraders inhabiting the heavy oil and seawater (collected from the Sea of Japan). The interactions among microbial cells, clay minerals and heavy oil were studied. Both clays were capable of promoting microbial growth and allowed microorganisms to proliferate (to a greater degree than in a control sample which contained no clay) in an extremely high concentration of heavy oil. Observation by transmission electron microscopy of the clay-oil-cell complexes showed that microbial cells tended to be bound primarily on the edges of the clays. X-ray diffraction analysis showed that the clay-oil and clay-oil-cell complexes involved the adsorption of microbial cells and/or heavy oil on the external surfaces of the clays. How do the interactions among clay minerals, microbial cells and heavy oil contribute to environmental factors influencing the bioremediation process? To our knowledge, there are no previous reports on the use of clay minerals in the bioremediation of theNakhodkaoil spill in combination with biofilm formation.

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A Survey of Classical and New Response Methods for Marine Oil Spill Cleanup

Marine Technology and SNAME News ◽

10.5957/mt1.1994.31.2.79 ◽

1994 ◽

Vol 31 (02) ◽

pp. 79-93

Author(s):

Emilio A. Tsocalis ◽

Thomas W. Kowenhoven ◽

Anastassios N. Perakis

Keyword(s):

Oil Spill ◽

Oil Recovery ◽

Heavy Oil ◽

Heavy Oil Recovery ◽

New Materials ◽

Marine Oil ◽

Methods And Techniques ◽

Oil Spill Response ◽

Oil Spill Cleanup

Both classical and new marine oil spill cleanup response methods and techniques are discussed. The intention is mainly to answer the fundamental questions of when, where, and how to apply the different methods. A brief review of the stages of the oil spill response problem is first presented, followed by the factors that influence the different methods. This is followed by an analysis of some new cleanup methods and improvements to existing methods, specifically: bioremediation, the use of more efficient ships for skimming, the use of fishing nets for heavy oil recovery, and new materials and designs of sorbents. Some cases are also analyzed to evaluate the performance of some methods under real conditions.

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Bubbler System Testing in Controlled Environment for Harsh Environment Oil Spill Recovery

10.1115/omae2021-62922 ◽

2021 ◽

Author(s):

Premkumar Thodi ◽

Vandad Talimi ◽

Robert Burton ◽

Majid Abdi ◽

Jonathon Bruce ◽

...

Keyword(s):

Water Column ◽

Oil Spill ◽

Oil Recovery ◽

Heavy Oil ◽

Harsh Environment ◽

Air Bubbles ◽

Test Protocol ◽

Recovery Techniques ◽

Oil Particles ◽

Mechanical Recovery

Abstract Mechanical recovery techniques are used to clean up oil spills in marine environments; however, their efficiency is challenged when dealing with heavy oil, ice covered water and high sea states. Current mechanical recovery techniques are based on removing oil from the water surface, however, a significant amount of oil could remain in the water column below the surface due to turbulent ocean conditions, the density of heavy oil and oil escaping underneath the booms when the sweeping speed increases. To enhance the oil recovery effectiveness, oil particles in the water column need to be guided to the surface to be recovered by the skimmers. This paper focusses on the development of a test protocol and physical testing in C-CORE’s lab of a bubbler system for enhancing the harsh environment oil spill recovery. Air bubbles produce an upward flow in the water body, which guides the submerged particles to the surface. The air bubbles also attach to the oil particles, leading to an increase in the buoyancy and rate at which oil droplets rise to the surface. By adopting this technique for oil recovery, additional oil particles can be brought to the surface. In the study, the bubbler system was tested in both stationary and advancing conditions with medium and heavy oils. The results of the stationary and advancing tests indicate that the oil recovery ratios can be significantly enhanced by using an optimized bubbler system. Different types and configurations of bubblers were tested by varying the airflow rates and bubbler advancing speeds to determine the optimal solution. The optimal bubbler system has been observed to enhance the recovery ratio from 41.5% to 84.8% with airflow rates ranging from 0.05 to 0.20 CFM/foot. Furthermore, the effective integration of the bubbler system with a mechanical recovery system, its deployment and retrieval in a near field condition were demonstrated during tests in an outdoor tank.

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SHORELINE OIL TWO YEARS AFTER AMOCO CADIZ: NEW COMPLICATIONS FROM TANIO

International Oil Spill Conference Proceedings ◽

10.7901/2169-3358-1981-1-525 ◽

1981 ◽

Vol 1981 (1) ◽

pp. 525-534 ◽

Cited By ~ 5

Author(s):

Erich R. Gundlach ◽

Serge Berné ◽

Laurent D'Ozouville ◽

Jerry A. Topinka

Keyword(s):

Oil Spill ◽

Wave Energy ◽

Heavy Oil ◽

Interstitial Water ◽

Tidal Flats ◽

Rocky Shores ◽

High Wave ◽

Spill Site ◽

High Wave Energy

ABSTRACT The latest in a series of joint Franco-American surveys of the Amoco Cadiz (233,000 tons; March 17, 1978) spill site was conducted during May and June 1980. The purposes of this survey were to determine remaining surface oil, buried oiled sediment, oil incorporation in interstitial water, and recovery of attached macroalgae. Oil was found to persist primarily as tar blotches and black staining along exposed rocky shores and as oil-contaminated (indicated by surface sheen), interstitial water in previously heavily oiled, sheltered tidal flats. Less commonly, oil was present as asphalted sediment and oil-coated rocks in sheltered embayments. The cleaned marsh at Ile Grande remained significantly damaged from the oil; however, both upper and lower marsh grasses showed some recovery. At another marsh, no recovery occurred in uncleaned, heavily oiled areas. On sheltered rocky shores, heavily oiled algae showed rapid recolonization by Fucus; however, Ascophyllum noaosum-dominated areas showed less recovery. The Tanio oil spill on March 7, 1980 (7,000 tons lost) impacted 45 percent of the Amoco Cadiz spill site and severely complicated further differentiation of Amoco Cadiz oil in many areas. In total, 197 kilometers (km) of shoreline were impacted; 45 km were heavily oiled. Nine weeks after initial impact, Tanio oil occurred as patches of heavy oil along sheltered and exposed, rocky shores. Sand beaches and tidal flats were generally free of oil. Several hundred soldiers continued to pressure spray dispersants and water to clean up oiled areas, even in high wave energy and isolated localities.

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