Browsing by Author "Ansari, Irfan"

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    Development of a staged anaerobic pond for methane recovery from domestic wastewater
    (Elsevier, 2018-08-08) Cruddas, Peter; McAdam, Ewan; Asproulis, Nikolaos; Antoniadis, Antonis F.; Ansari, Irfan; Best, D.; Jefferson, Bruce; Cartmell, Elise; Collins, G.; Porca, E.; Peña-Varón, M. R.
    Since their inception in larger pond systems, the focus of anaerobic ponds has shifted from solids removal to optimising biogas production and reducing physical footprint to minimise land requirements. In this study, a horizontally baffled (HBAP) and vertically baffled (VBAP) anaerobic pond were compared. Distinct differences in the removal efficiency of COD fractions were observed, with particulate COD removal of 78% and 32%, and soluble COD removal of −26% and 19% in the HBAP and VBAP, respectively. A staged pond (SAP) was constructed through an HBAP placed upstream of a VBAP, with an additional HBAP used as a control (CAP). The SAP demonstrated superior biogas recovery potential over the control: methane production by the conclusion of the study was 6.09 and 9.04 LCH4 m−3 wastewater treated for the CAP and SAP, respectively. Methanogenic activity in the ponds was higher closer to the outlet, and hydrogenotrophic methanogenesis dominated over acetoclastic pathways.
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    ItemOpen Access
    Operational resilience in the business-battle space
    (Capco Institute, 2021-05-01) Matthews, Ron; Ansari, Irfan; Watters, Bryan
    The purpose of this paper is to explore the interconnectivity between defence, security, and business, particularly when viewed through the prism of operational resilience. The standard stereotype depicts the military acting as a harbinger of destruction while business represents the motive force of wealth generation. This is too simplistic, however. Militaries fight wars, but they also make an important contribution to addressing the expanding array of non-traditional threats that form part of national security, including wildfires, floods, earthquakes and, of course, pandemics, such as COVID-19. The military’s physical resources, attitudinal robustness, and rigorous planning regimes represent three of the more important dimensions of military operational resilience. Mutual commercial-military benefits can be gained via a “two-way” street in the adoption of best-practice resilience solutions. There is a recognition that just as military resource managers can learn from business, so equally can business learn from the military. The U.K. case is offered to illustrate the principles, policies, and practices of military operational resilience.