Diffusion Coefficients of UAE Gasoline as Inputs to Some Environmental Transport or Risk Assessment

Zubaidy, Isam Al; Alsanea, Omar; Ibrahim, Sahar; Saeed, Yusuf; Turki, Renad; Alhammadi, Aziza

doi:10.7763/jocet.2013.v1.12

Cited by 7 publications

(6 citation statements)

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“…The gravimetric method, which employs weight measurements over time, was used to determine the transport parameters, such as partition coefficient (K), diffusion coefficient (D) and mass flux (F) (Glaza and Park, 1992; Kim et al, 1996; Park and Bontoux, 1991, 1993; Park and Nibras, 1993; Sangam and Rowe, 2005). As this method measures weight gain, the determined values are for the mixture of chemicals present in gasoline and mineral spirits (Al Zubaidy et al, 2013; Park and Nibras, 1993).…”

Section: Methodsmentioning

confidence: 99%

Development of reactive artificial liner using recycled materials. 2. Chemical transport properties

et al. 2013

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Volatile organic compounds (VOCs) have so far been found to permeate through geomembranes within days and potentially pollute the surrounding groundwater if no sufficient depth of underlain soil barrier existed In order to cope with the fast breakthrough of VOCs through high-density polyethylene (HDPE) geomembrane in the composite liner system, a composite material made of recycled materials was proposed and its mechanical properties were analyzed in a previous study. This artificial liner was composed of crumb rubber, organo-clay, silica fume and epoxy binder together with an environmentally-friendly solvent recycled from paper pulping, and dimethyl sulfoxide as a plasticizer. In this study, the new artificial liner and a typical HDPE geomembrane were tested to compare their abilities to mitigate the movement of VOCs, specifically partition coefficient, diffusion coefficient and mass fluxes. It was found that this new artificial liner had 2-3 orders of magnitude less VOC mass flux than the HDPE geomembrane. The new artificial liner is thought to have a great potential for containing VOCs, even with a thickness of 2.5 cm, and as a substitute for the clay liner. The cost of installing the artificial liner was estimated to be $13.78/m(2). This is lower than the current geomembrane-related price of $19.70-26.91/m(2). The new liner might give a new perspective in future liner design and alleviate the concerning issue of groundwater pollution caused by landfill leachate, which might contain highly mobile VOCs.

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Section: Methodsmentioning

confidence: 99%

Development of reactive artificial liner using recycled materials. 2. Chemical transport properties

et al. 2013

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“…For water vapor, the simplifying assumption z 0v = z 0 /10 is often employed (Brutsaert, 2005). Since the diffusion coefficient of gasoline vapor, e.g., D ma = 7 ×10 −7 m 2 /s (Al Zubaidy et al, 2013), is roughly equal to the one of water vapor (10 −6 m 2 /s), the Schmidt numbers for the two vapors are also about equal. Therefore theoretical considerations (Brutsaert, 1975) suggest that z 0v = z 0 /10 is also a reasonable approximation for gasoline vapor.…”

Section: Potential Evaporation Modelingmentioning

confidence: 98%

Infiltration and evaporation of small hydrocarbon spills at gas stations

Hilpert

Breysse

2014

Journal of Contaminant Hydrology

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“…The assessment was conducted at 48°C, which represents the highest atmospheric temperature in the UAE. The researchers found that super gasoline has a higher octane number, minimum density, and a diffusion coefficient of 6.348 (Alzubaidy et al , 2013).…”

Section: Literature Reviewmentioning

confidence: 99%

The potential of implementing a toxicity tax for heavily polluting vehicles in the United Arab Emirates

Taleb

2020

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Purpose The purpose of this study is to investigate the potential of implementing a toxicity tax for heavily polluting vehicles in United Arab Emirates. A fast-changing world needs responsive policies to cope with the crisis human beings are currently facing on earth. Implementing a new policy represents a design for a change. Policies come in the form of regulations that have been officially agreed and chosen by either a political party, business or any other type of organization. This paper adopts the policy development cycle in the Australian policy handbook as a practical framework. A focus group comprising 35 participants and two decision makers thoroughly discussed each stage of the “policy development cycle”. A qualitative analysis of the data showed that there is potential for implementing a new tax to be imposed on highly polluting vehicles in United Arab Emirates (UAE) the most appropriate policy instrument in UAE is a policy enacted through restricted law; it might take more than 3 years to work; the expected tax would range between $280 and $1,100 per year; and there is concern that this new tax would slow Dubai’s preparation for EXPO 2020. These findings will help countries implement this new tax. Following the stages of the policy development cycle and their procedures will, therefore, inspire decision makers to formulate new environmental policies not only in UAE but around the world. Design/methodology/approach This research adopts the use of “focus groups” as its primary approach to data collection. A focus group is a common qualitative research technique and involves a small number of participants. The main reason for using qualitative research is because participants are asked for open-ended responses that convey their thoughts or feelings. The author of this paper served as the moderator who posed a series of questions intended to gain insight into the group’s views on the implementation of a toxicity tax for heavy polluting vehicles in the UAE. Time and attention were given to what it is that you expect to get out of focus-group research. The group was invited for one full day to a big hall and was seated around one table. The group was sometimes divided to obtain more focused views. Overall, four primary groups participated in this study. A fifth group, consisting of three senior members of a governmental agency who acted as decision makers, took part in one-to-one interviews at their place of work. Table I provides details on the backgrounds of the participant. Findings Research highlights the policy development cycle to investigate a new transport policy in UAE. A focus group comprising 35 participants and two interviews with two decision makers. There is potential for a tax to be imposed on highly polluting vehicles in UAE. The expected tax would range between $280 and $1,100 per year. The best policy instrument in the region is policy by law. The truck industry will be affected, and there will be a public refusal. Research limitations/implications A new policy of implementing tax for high polluting vehicles was, therefore, discussed in this paper. Participants thought the tax would work, but an in-depth feasibility study on both microeconomic and macroeconomic aspects will be required; providing governmental incentives will help support the shift to less-polluting vehicles. Practical implications The policy development cycle was utilized as a practical framework for this research. Social implications People were engaged into this study to make the policy viable. People will react positively to this policy. Originality/value Due to the lack of such research in this area, this paper will fill a gap in the knowledge. Moreover, the policy will be real implementation based on this publication. The findings will not only help UAE but also many countries that share same environmental and social contexts.

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Diffusion Coefficients of UAE Gasoline as Inputs to Some Environmental Transport or Risk Assessment

Cited by 7 publications

References 0 publications

Development of reactive artificial liner using recycled materials. 2. Chemical transport properties

Development of reactive artificial liner using recycled materials. 2. Chemical transport properties

Infiltration and evaporation of small hydrocarbon spills at gas stations

The potential of implementing a toxicity tax for heavily polluting vehicles in the United Arab Emirates

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