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The purpose of this paper is to investigate a fuzzy hybrid approach for ranking the flare gas recovery methods and allocating to refineries.

The proposed approach is containing four stages: in the first stage, experts' assessment is applied to identify relevant criteria and sub-criteria in the evaluation of flare gas recovery methods. In the second stage, the corresponding weights of criteria and sub-criteria are determined via fuzzy decision-making trial and evaluation (DEMATEL)-analytical network process (ANP) (DANP) method. In the third stage, the flare gas recovery methods are ranked using fuzzy weighted aggregated sum product assessment method (WASPAS) multi-criteria decision-making (MADM) technique. In the fourth stage, an optimization model is developed to allocate gas recovery methods to refineries while maximizing the total utility of allocations based on model constraints.

According to the results of fuzzy DANP method, technical and operational criterion was the most important followed by economic, political, managerial and environmental criteria. With respect to sub-criteria, international sanctions and political stability were the most important. The results of fuzzy WASPAS method indicated that gas injection was the first ranked alternative. Finally, the mathematical modeling allocated the recovery methods to five refineries of South Pars gas field in Iran based on budget and time constraints.

The proposed approach provides a systematic tool in the selection of flare recovery methods and allocation to refineries. This approach uses a new combination of fuzzy DEMATEL-ANP (DANP) method, fuzzy WASPAS method and mathematical programming. The approach is effectively implemented in a case study for ranking the flare gas recovery methods and allocating to refineries of South Pars gas field in Iran.

Carbon emissions from gas flaring in the Nigerian oil and gas industry are both a national and international problem. Nigerian government policies to eliminate the problem 1960-2016 yielded little or no results. The Kyoto Protocol (KP) provides Clean Development Mechanism (CDM) as an international market-based mechanism to reducing global carbon emissions. Therefore, the purpose of this paper is to analytically highlight the potentials of CDM in eliminating carbon emissions in the Nigerian oil and gas industry.

This paper reviewed the historical background of Kyoto protocol, Nigerian Government policies to eliminating gas flaring in its oil and gas industry 1960-2016 and CDM projects in the industry. The effectiveness of the policies and CDM projects towards ending this problem were descriptively analysed.

Government policies towards eliminating gas flaring with its attendant carbon emissions appeared not to be yielding the desired results. However, projects registered under CDM in the industry looks effective in ending the problem.

Therefore, the success recorded by CDM projects has the policy implication of encouraging Nigeria to engage on establishing more CDM projects that ostensibly proved effective in reducing CO2 emissions through gas flaring reductions in its oil and gas industry. Apparent effectiveness of studied CDM should provide a way forward for the country in eliminating gas flaring in its oil and gas industry which is also a global menace. Nigeria could achieve this by providing all needed facilitation to realising more CDM investments.

CDM as a policy has proved effective in eliminating gas flaring in the Nigerian oil and gas industry. The government should adopt this international policy to achieve more gas flaring reductions.

Social problems of respiratory diseases, water pollution and food shortage among others due to gas flaring are persisting in oil and gas producing areas as government policies failed to end the problem. CDM projects in the industry have proved effective in eliminating the problem, thus improving the social welfare of the people and ensuring sustainable development.

The paper analysed the effectiveness of Nigerian Government policies and an international market-based mechanism towards ending gas flaring in its oil and gas industry.

Various impacts of direct venting of natural gas into the environment, both in the upstream and downstream petroleum operations, often compel the chemical engineer to specify air pollution control equipment for installation on new and existing platforms/facilities. Flares, a special class of such equipment, are considered in this paper. The major types of flares used in the oil industry are reviewed and the principles guiding their operation and performance discussed. Information which would aid the choice of flare system for new applications is also discussed.

An aerothermodynamic design code for axisymmetric projectiles has been developed using a viscous‐inviscid interaction scheme. Separate solution procedures for the inviscid and the viscous (boundary layer) fluid dynamic equations are coupled by an iterative solution procedure. Non‐equilibrium, equilibrium and perfect gas boundary layer equations are included. The non‐equilibrium gas boundary layer equations assume a binary mixture (two species; atoms and molecules) of chemically reacting perfect gases. Conservation equations for each species include finite reaction rates applicable to high temperature air. The equilibrium gas boundary layer equations assume infinite rate reactions, while the perfect gas equations assume no chemical reactions. Projectile near‐wall and surface flow profiles (velocity, pressure, density, temperature and heat transfer) representing converged solutions to both the inviscid and viscous equations can be obtained in less than two minutes on minicomputers. A technique for computing local reverse flow regions is included. Computations for yawed projectiles are accomplished using a coordinate system transformation technique that is valid for small angle‐of‐attack. Computed surface pressure, heat transfer rates and aerodynamic forces and moments for 1.25 &le Mach No. &le 10.5 are compared to wind tunnel and free flight measurements on flat plate, blunt‐cone, and projectile geometries such as a cone‐cylinder‐flare.

The purpose of this paper is to compare various landfill gas (LFG) and leachate treatment technologies in a life‐cycle perspective.

Since a landfill causes emissions for a very long‐time period, life‐cycle‐based environmental assessment was carried out to compare different technological options for sustainable leachate treatment and LFG collection and utilization. WAMPS, the life‐cycle assessment (LCA) model for waste management planning, was used for the environmental assessment of selected leachate and LFG treatment technologies.

Results of both direct measurements in the studied landfills and LCA support the fact that leachate treatment with reverse osmosis has the best environmental performance compared to aerobic‐activated sludge treatment. Recently, the collection efficiency of LFG in the studied landfills is relatively low. In order to improve the overall environmental performance of LFG management the gas collection rate should be improved. LFG utilisation for energy recovery is an essential part of the system. The results of the study show that the avoided impacts of energy recovery can be even greater than direct impacts of greenhouse gas emissions from landfills. Therefore, measures which combine LFG collection with energy generation should be preferred to treatment in flare.

It should be noted that the results of this study do not express the total environmental impacts of the entire landfill system, but only the eutrophicating impacts and global warming related to the studied leachate and LFG management options. Therefore, it is recommended that further LCAs investigate also other relevant impact categories.

The results of LCA modelling show that it is important to ensure the highest collection and treatment efficiency of leachate and LFG, since poor capture compromises the overall environmental performance of a landfill.

The paper provides a site‐specific data on sustainable leachate and LFG management in selected Estonian conventional municipal solid waste landfills. As such, the paper contributes to the development of the regional reference input data for LCA in waste management.

This chapter examines the UK and the Nigerian approach to reducing emission of greenhouse gases (GHGs) into the environment as a result of gas flaring utilising the market-based regulation. Determining how different jurisdictions fare in the quest to reduce GHG emissions associated with the oil and gas industry is essential because: policy makers have realised the advantages of market-based regulation over the command-and-control regulation; and in the light of various pledges different countries have made in different forum to reduce the emission of GHGs, particularly in the wake of the recently held Paris climate change conference.

Library-based approach is used, providing conceptual and theoretical understanding of climate change, GHG emissions and various market-based regulatory tools utilised in the United Kingdom and Nigeria in regulating emission associated with operations in the oil and gas industry.

The study reveals the significance of environmental regulations that encourage region integration and flexibility in the implementation of environmental policies. Moreover, it finds that the Paris Agreement re-affirms the utilisation of market-based regulations and indicates a future for investment in the oil and gas industry.

The study revealed that there are lacunas in regulations and strategies for the implementation of environmental regulations which need to be addressed in order to achieve zero or a significant decrease in gas flaring.

This study provided an ample opportunity to theoretically examine market-based regulatory tools utilised in the oil and gas industry in a developed country in relation to a developing country.

This study aims to develop a framework that enables the identification of sustainability factors from industry-specific environmental issues, and it proposes that these factors, in turn, can influence the corporate environmental performance (CEP) of firms in such an industry. It also validates the factor identification aspect of the framework.

The paper starts by reviewing relevant literature extensively and then developing an issue-based environmental sustainability framework to highlight the structural relationship of industry-specific sustainability factors with CEP. By involving 131 participants from academics in Niger Delta, the paper uses exploratory factor analysis techniques to reduce industry-specific sustainability factors from several environmental and socio-economic issues in the Nigerian oil and gas (O&G) industry.

Environmental risk originates from business environmental issues, and it triggers community reaction, which impacts negatively on corporate image. The nature of firm’s strategic responsiveness to these factors determines CEP.

The study draws from the perspectives of academics on environmental issues in Niger Delta to validate the factor identification aspect of the framework. The views of other stakeholders are not included, and hence, it should be applied with caution.

Useful in identifying and managing industry-specific environmental issues, and thus, achieving some sustainable development objectives.

Although most previous studies have focused on generic CEP drivers, this study proposes sustainability factors that can originate from industry-specific environmental issues as crucial drivers of CEP in such an industry. It provides empirical evidence of such credible sustainability factors emerging from the Nigerian O&G industry’s environmental issues.

The aim of this paper is to provide a general overview of the global oil and natural gas resources, production, technology development, energy use, emissions and costs. The activity is based on the European project “Risk of Energy Availability: Common Corridors for Europe Supply Security” (REACCESS) and the data collected was used in this project as an input to evaluate the technical, economical and environmental characteristics of the energy corridors to European Union (EU).

The paper is based on literature reviews and data collection from national authorities, oil companies, international associations and international organisations.

The work provides a general overview of oil and natural gas resources, production rates, recent technology developments, costs, losses, energy consumption and emissions on a world regional level. Main issues related to the role of conventional oil and natural gas in the energy import framework are summarised in this paper.

The present study provides information on conventional oil and natural gas resources and it is limited to primary production technologies.

An outline of oil and natural gas on a regional level is presented. The paper provides general introduction to the subject and it is a valuable input for modelling and analyses of conventional oil and natural gas in the present and in the future energy system.

The purpose of this paper is to examine a greenhouse gas (GHG) emission reduction potential from different waste management practices in Croatia. Energetic, environmental and economic benefits can be accomplished by utilizing municipal solid waste (MSW) and landfill gas as fuel in industry and energy sector, which is emphasized in this paper. The paper gives an overview of measures for energy recovery from MSW and landfill gas that could be implemented in Croatia. These measures also represent measures for an additional GHG emission reduction by decreased use of fossil fuels.

A methodology used for emission calculation (kinetic model) is explained. Three different scenarios of GHG reduction in waste management were defined. Implementation of best available techniques in waste management is envisaged by cross‐sectoral impact and effect of respective measures. Findings –This paper gives maximum achievable potential of GHG emission reduction with defined measure implementation dynamics. It was calculated that around one million ton of CO₂ can be avoided in 2020, which is 2.7 percent of projected GHG emissions in Croatia. The energy that could be recovered from waste (8.34 PJ in 2020) is relatively small in relation to the total final energy consumption in Croatia (about 3 percent).

The novelty of this work is achieved through integrated approach to GHG emission reduction and energy potential from MSW management in Croatia. The GHG reduction potentials are calculated by taking into account dependencies and interactions between the measures.