Remediation Technologies for Marine Oil Spills: A Critical Review and Comparative Analysis

Abstract

Problem statement: Anthropogenic activities pollute the oceans with oil through land run off, vessels accidents, periodic tanker discharges and bilge discharges. Oil spills are environmental disasters that impact human, plants and wild life including birds, fish and mammals. Approach: In this study, the International Guidelines for Preventing Oils Spills and Response to Disasters were reviewed and the characteristics of oil spills were discussed. The advantages and disadvantages of various oil spill response methods were evaluated. A comparative analysis were performed on the currently available remediation technologies using 10 evaluation criteria that included cost, efficiency, time, impact on wild life, reliability, level of difficulty, oil recovery, weather, effect on physical/chemical characteristics of oil and the need for further treatment. The advantages and disadvantages of each response method were used to determine the score assigned to that method. Results: There are many government regualtions for individual countries that serve as prevention mesures for oil spills in the offshore environment. They have to do with the design of equipment and machinery used in the offshore environment and performing the necessary safety inspections. The primary objectives of response to oil spill are: to prevent the spill from moving onto shore, reduce the impact on marine life and speed the degradation of any unrecovered oil. There are several physical, chemical, thermal and biological remediation technologies for oil spills including booms, skimmers, sorbents, dispersants, insitu burning and bioremediation. Each technique has its advantages and disadvantages and the choice of a particular technique will depend on: type of oil, physical, biological and economical characteristics of the spill, location, weather and sea conditions, amount spilled and rate of spillage, depth of water column, time of the year and effectiveness of technique. Coclusion: Based on the comparative analysis, oil recovery with mechanical methods and the application of dispersants followed by bioremediation is the most effective response for marine oil spill.

Investigation of Oil-in-Water Emulsions Treatment by Crude Oil Degrading Bacteria and Coagulation with Cationic Polyacrylamide

“…There are a lot of technology for the cleaning up oil contaminated areas such as physical removal (booms, skimmers and absorbent materials, chemical methods emulsion breakers (separates water and oil mixtures), gelling agents, burning agents, neutralizing agents, sinking agents, bioremediation chemicals (accelerate oil's natural degradation), viscoelastic additives and herders) and biological methods [5]. Bioremediation approach is environmentally friendly treatment technology for the removal of hydrocarbons by biological agents such as microorganisms.…”

Hydrophobic surface modification of FMSS and its application as effective sorbents for oil spill clean‐ups and recovery

“…The accidental discharge of petroleum products and organic solvents into the environment during oil exploration and transportation have resulted in catastrophic environmental pollutions on the aquatic ecosystems, needless to say the significant economic losses worldwide . To address this challenge, various oil spill remediation techniques (including uses of absorbents, in situ burning of oil in water, mechanical clean‐up methods, bioremediation, and applications of chemical dispersants and solidifiers) have been employed to facilitate oil spill clean‐up and recovery from water surface .…”

“…The accidental discharge of petroleum products and organic solvents into the environment during oil exploration and transportation have resulted in catastrophic environmental pollutions on the aquatic ecosystems, needless to say the significant economic losses worldwide. 1 To address this challenge, various oil spill remediation techniques (including uses of absorbents, in situ burning of oil in water, mechanical clean-up methods, bioremediation, and applications of chemical dispersants and solidifiers) have been employed to facilitate oil spill clean-up and recovery from water surface. [2][3][4][5][6] Among these techniques, the use of three-dimensional porous absorbent is particularly attractive and promising because of its potential to absorb and hold the oil pollutants into its matrix structure, making subsequent recovery of the oil from its semisolid sorbent phase viable.…”

Пределы Горения Вспененной Эмульсии С Высоким Содержанием Воды

“…Эмульсионные топлива на основе углеводородов с добавлением воды представляют интерес с точки зрения широкого класса приложений, включая традиционную энергетику [1] и биоэнергетику [2]. Актуальными являются задачи утилизации водонасыщенных углеводородов, в том числе задача очистки акваторий от нефтяных разливов [3]. Добавление воды к углеводородному топливу в форме распыла или в составе эмульсионного топлива может использоваться с целью снижения температуры продуктов горения и сокращения эмиссии вредных выбросов, в частности окислов азота [4] и наночастиц сажи [5].…”