Showing papers by "Simon J. Judd published in 2018"
TL;DR: In this review, the authors highlight the most recent development in bio-regeneration including the regeneration mechanism, the relationship between the reversibility of adsorption and the efficiency of bio-Regeneration, the general aspects affecting bio-recovery, the principle and target compounds for bio- Regenation, and different established methods for quantifying the bio- regeneration.
134 citations
TL;DR: P WW, S WW and P E media were found to provide an appropriate quantity and balance of nutrients to promote significantly more rapid algal growth than the standard medium MLA, with high nutrient RE achieved at the end of cultivation period.
79 citations
TL;DR: It was found that nitrogen stressed medium increase the total lipid content but temperature and intensities of light were the most important factors to control the quantity of linolenic acid and hence the quality of biodiesel, while the optimum CO2 helped to achieve maximum biomass and triacylglycerols.
77 citations
TL;DR: In this article, a life cycle cost analysis (LCCA) has been conducted to establish the relative cost savings of structural concrete combining seawater, RCA, and GFRP reinforcement in high-rise buildings compared with a traditional concrete mix and other reinforcement materials, such as black steel and stainless steel.
77 citations
TL;DR: In this article, hydrophilic and hydroxyl-rich polymer polyvinyl alcohol (PVA) was used as the key building block for co-deposition, successfully entrapping it within the self-polymerized polydopamine (PDA) matrix with stabilization through intermolecular hydrogen bonding between PVA and PDA moieties.
50 citations
TL;DR: In this paper, the application of ceramic microfiltration membranes to the tertiary treatment of produced water from an Arabian Gulf oilfield has been studied using a dedicated pilot plant, where chemical cleaning in place (CIP) was applied between each run and the flux and permeability recovery recorded for various cleaning protocols studied.
37 citations
TL;DR: In this article, the authors evaluated the effect of different physical cleaning modes on the overall resistance of cake layer removal in a range of different bench and pilot-scale plants, using the Resistances In-Series model, with the aim of producing a robust protocol for quantifying these discrete contributors.
23 citations
TL;DR: Outcomes suggest that sludging is caused by rheological conditions promoting bubble coalescence and bubble stream constriction, reducing the exposure of the membrane surface to scouring air.
16 citations
10 Nov 2018
TL;DR: Results demonstrated membrane reciprocation to have a more beneficial impact on sludging amelioration than on suppressing fouling, and it is likely that the mechanical complexity of applying membrane movement would limit the practical application to low flows, and a correspondingly small number of membrane modules.
Abstract: The impact of the application of mechanically-imposed shear on the propensity for fouling and clogging (or “sludging”—the agglomeration of sludge solids in the membrane channel) of an immersed flat sheet (iFS) membrane bioreactor (MBR) was studied. The bench-scale test cell used contained a single flat sheet fitted with a crank and motor to allow the membrane to be oscillated (or reciprocated) vertically at a low rate (20 RPM). The membrane was challenged with sludge samples from a local MBR installation treating petroleum industry effluent, the sludge having previously been demonstrated as having a high sludging propensity. Sludging was measured by direct visual observation of membrane surface occlusion by the agglomerated solids, with fouling being notionally represented by the rate of transmembrane pressure increase. Results demonstrated membrane reciprocation to have a more beneficial impact on sludging amelioration than on suppressing fouling. Compared with the stationary membrane, sludging was reduced by an average of 45% compared with only 13% for fouling suppression at the reference flux of 15 L·m−2·h−1 applied. The specific energy demand of the mechanical shear application was calculated as being around 0.0081 kWh·m−3, significantly lower than values reported from a recent pilot scale study on a reciprocated immersed hollow fibre MBR. Whilst results appear promising in terms of energy efficiency, it is likely that the mechanical complexity of applying membrane movement would limit the practical application to low flows, and a correspondingly small number of membrane modules.
5 citations
01 Jan 2018
4 citations