Browsing by Author "Ahmed, A."

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    Ceramic membrane filtration of produced water: impact of membrane module
    (Elsevier, 2016-04-01) Zsirai, T.; Al-Jaml, A. K.; Qiblawey, Hazim; Al-Marri, M.; Ahmed, A.; Bach, S.; Watson, S.; Judd, Simon J.
    Produced water (PW) generated from oil exploration requires rigorous removal of suspended matter (free oil and particulate solids) as tertiary treatment (downstream of hydrocyclone and gas flotation) if it is to be re-injected into low-permeability reservoirs. The viability of membrane filtration for this duty is largely dependent on sustaining a high membrane flux to minimise the process footprint. A pilot-scale study of PW filtration using crossflow multi-channel ceramic membrane technology has been conducted to identify the appropriate membrane characteristics for sustaining the flux whilst maintaining the required treated water quality. Membranes based on two materials (silicon carbide, SiC, and titanium dioxide, TiO2) and two different pore sizes were challenged with real PW samples taken from oil platforms operating on the Arabian Gulf. The membranes were characterised according to the overall permeability decline rate and the end permeability. Results suggest that SiC membranes outperform TiO2 ones with respect to sustainable permeability under the same operating and maintenance conditions. The SiC microfiltration membrane provided anomalously high permeabilities but also the highest fouling propensity. Results suggest that whilst the high fluxes (1300–1800 L m−2 h−1) are attainable for the technology, this is contingent upon the application of an effective chemical clean.
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    Enhancement of the Product Information Collaboration and Access in the Aerospace Industry
    (Taylor & Francis, 2013-12-31T00:00:00Z) Shehab, Essam; Fowler, C.; Rodriguez, Gil A; Abdalla, Hassan S.; Darwish, M.; Abdulhafed, H.; Ahmed, A.; Ahouie, H.; Alechnovic, A.; Paumes, C.; Tacchini, E.; Urbane, I.
    This paper presents the development of four scenarios to design a pull mode industrial solution that enables tier-one suppliers to securely and efficiently retrieve data for manufacturing purposes from Original Equipment Manufacturers (OEMs). The research aim is to facilitate and enhance product information sharing between OEMs and their Tier-one suppliers. The proposed Scenarios were developed using PDMLink, which is a Product Lifecycle management system (PLM) and Microsoft SharePoint collaboration platform. The research methodology comprises seven phases including definition of scope, understanding the AS-IS processes, gap analysis, development of the scenarios, and finally validation and cost analysis. This methodology was implemented to select the most suitable scenario for utilising the tools available in the PLM system to accomplish the pull mode data collaboration solution. Data were collected through various ways including semi-structured interviews, workshops with experts, and review of technical documentation on current process. The major benefits of the developed solution are cost reduction due to diminution of resources required for the new process, lead time to access data by suppliers and improved data management. These will reduce the product development cycle, and ensure improved quality of manufactured components.