Browsing by Author "Villa, Raffaella"

Achieving drinking water compliance levels for metaldehyde with an acclimated sand bioreactor

Rolph, Catherine A.; Jefferson, Bruce; Brookes, Adam; Hassard, Francis; Villa, Raffaella (Elsevier, 2020-07-06)

Metaldehyde removal was delivered to below the 0.1 µg L-1 regulatory concentration in a laboratory scale continuous upflow fluidised sand bioreactor that had undergone acclimation through selective enrichment for metaldehyde ...

Aeroterrestrial and freshwater microalgae biofilms: deposition and growth in aqueous and non-aqueous systems.

Ledwoch, Katarzyna (2016-12)

Non-suspended microalgal cultivation methods have gained an interest over the last decade. In contrast to traditional cultivation systems, where microalgae are grown in highly diluted suspensions, microalgae grow concentrated ...

Aged-engineered nanoparticles effect on sludge anaerobic digestion performance and associated microbial communities

Eduok, Samuel; Ferguson, Robert M. W.; Jefferson, Bruce; Villa, Raffaella; Coulon, Frederic (Elsevier, 2017-07-23)

To investigate the potential effect of aged engineered nanoparticles (a-ENPs) on sludge digestion performance, 150 L pilot anaerobic digesters (AD) were fed with a blend of primary and waste activated sludge spiked either ...

Agricultural challenges today and in the future: the beneficial role of agroecology

Keay, Gordon (Cranfield UniversitySAS, 2009-09)

Interest in agroecology is growing as evidence mounts that conventional agricultural methods are unsustainable, degrading the resource base (e.g. soil, water, crop diversity, biodiversity etc.) on which they depend. ...

Algae reactors for wastewater treatment

Whitton, Rachel Louise (Cranfield University, 2016-02)

The onset of the Water Framework Directive (WFD) will challenge water utilities to further reduce their wastewater phosphorus discharges to < 0.5 mg.L- 1 . Whilst conventional treatments, such as chemical dosing, are ...

Assessing the potential of enhanced primary clarification to manage fats, oils and grease (FOG) at wastewater treatment works

Collin, Thomas Denis; Cunningham, Rachel; Asghar, Mohammed Qasim; Villa, Raffaella; MacAdam, Jitka; Jefferson, Bruce (Elsevier, 2020-04-20)

Daily, sewage treatment works (STWs) receive large volumes of fats, oils and greases (FOG), by-products of food preparation. To increase FOG removal at STW, conventional primary sedimentation tanks (PSTs) can be enhanced ...

An assessment of different extraction and quantification methods of penta- and hexa-chlorobenzene from SRF fly-ash

Balampanis, Dimitris E.; Coulon, Frederic; Simms, Nigel; Longhurst, Philip J.; Pollard, Simon J. T.; Fenech, Cecilia; Villa, Raffaella (Elsevier, 2017-01-26)

Highly chlorinated benzenes, produced in the presence of organic matter and chlorine, are considered PCDD/Fs precursors, and are used as cost and time convenient substitute indicators for the indirect measurement of the ...

Bioengineering options and strategies for the optimization of anaerobic digestion processes

Ferguson, Robert M. W.; Villa, Raffaella; Coulon, Frederic (Taylor & Francis, 2014-04-17)

Anaerobic digestion (AD) is a complex biological process, and the microbial diversity and dynamics within the reactor needs to be understood and considered when process optimization is sought after. Microbial interactions ...

Biological FOG degradation: development of a standardised bioadditive protocol.

Gurd, Caroline (Cranfield UniversitySWEE, 2018-11)

FSE, wastewater, Gerber, COD:N, bioaddition, bioremediation, Fat, oil and grease (FOG) rich effluents from commercial food service establishments (FSEs) have been identified as major contributors to sewer blockages. ...

Carbon capture and biogas enhancement by carbon dioxide enrichment of anaerobic digesters treating sewage sludge or food waste

Bajón Fernández, Yadira; Soares, Ana; Villa, Raffaella; Vale, P.; Cartmell, Elise (Elsevier Science B.V., Amsterdam., 2014-05-01)

The increasing concentration of carbon dioxide (CO2) in the atmosphere and the stringent greenhouse gases (GHG) reduction targets, require the development of CO2 sequestration technologies applicable for the waste and ...

Characterisation and energy assessment of fats, oils and greases (FOG) waste at catchment level

Collin, Thomas; Cunningham, Rachel; Jefferson, Bruce; Villa, Raffaella (Elsevier, 2020-01-13)

Several of the waste materials that have a negative impact on the sewer system are produced by fats, oils and greases (FOG) discharged from commercial and domestic kitchens. These materials accumulate at different points ...

Characterisation of food service establishment wastewater and its implication for treatment

Gurd, Caroline; Jefferson, Bruce; Villa, Raffaella (Elsevier, 2019-10-08)

Essential for the selection of a reliable treatment system is the characterisation of the effluent to treat. Kitchen wastewater (KWW) from food service establishments (FSEs) is a strong organic and fat-rich effluent whose ...

Comparative study on the combustion and gasification of solid recovered fuels. Emphasis on residues characterisation and chlorine partitioning

Balampanis, Dimitris E. (Cranfield University, 2009-10)

Thermal treatment is recognised as a valid option within the waste management hierarchy for the recovery of the energy content of waste. Recent developments in the field are signposted from emergent technologies and the ...

Compositional analysis of excavated landfill samples and the determination of residual biogas potential of the organic fraction

Garcia, J.; Davies, S.; Villa, Raffaella; Gomes, D. M.; Coulon, Frederic; Wagland, Stuart Thomas (Elsevier, 2016-06-08)

The objectives of this study were to assess the biogas potential of landfilled materials and to further validate the suitability of the enzymatic hydrolysis test EHT as a valuable alternative to substitute the standardised ...

Compositional and physicochemical changes in waste materials and biogas production across 7 landfill sites in UK

Frank, R. R.; Cipullo, Sabrina; Garcia, J.; Davies, S.; Wagland, Stuart Thomas; Villa, Raffaella; Trois, C.; Coulon, Frederic (Elsevier, 2016-08-28)

The aim of this study was to evaluate the spatial distribution of the paper and fines across seven landfill sites (LFS) and assess the relationship between waste physicochemical properties and biogas production. Physicochemical ...

Deposition onto heat exchanger surfaces from the co-firing of coal and biomass

Legrave, Nigel A (Cranfield University, 2011-12)

In the latter part of the 20th century, there has been a continuing global concern of the consumption of fossil fuels used in power production. There is further concern of the gaseous emissions that are created from ...

Determination of fats, oils and greases in food service establishment wastewater using a modification of the Gerber Method

Gurd, Caroline; Jefferson, Bruce; Villa, Raffaella; de Castro Rodriguez, C. (Wiley, 2018-11-13)

Discharges from food service establishments (FSEs) are a major source of fat, oil and grease (FOG) which cause blockages in sewer networks. Previous research has identified that current methods are unsuitable for quantifying ...

Dry anaerobic digestion of organic waste: a review of operational parameters and their impact on process performance

Rocamora, Ildefonso; Wagland, Stuart T.; Villa, Raffaella; Simpson, Edmon W.; Fernández, Oliver; Bajón Fernández, Yadira (Elsevier, 2019-12-24)

Dry digestion is a suitable technology for treating organic wastes with varying composition such as the organic fraction of municipal solids waste. Yet, there is a need for further research to overcome some of the disadvantages ...

Energy potential of household fats, oils and grease (FOG) waste

Collin, Thomas; Cunningham, Rachel; Deb, Melani; Villa, Raffaella; MacAdam, Jitka (Wiley, 2021-07-01)

In comparison to fats, oils and grease (FOG) found in commercial and industrial effluents, very little is known about FOG discharged at household level. To address this shortcoming, household FOG production was calculated ...

Energy recovery from immobilised cells of Scenedesmus obliquus after wastewater treatment

Gomez San Juan, Marta; Ometto, F.; Whitton, Rachel; Pidou, Marc; Jefferson, Bruce; Villa, Raffaella (Springer, 2017-05-05)

Biomethane batch test of alginate beads and beads with algae at different stages of utilisation in the wastewater treatment plants showed that immobilised S. obliquus yield similar biogas and biomethane than freely suspended ...

Browsing by Author "Villa, Raffaella"

Browsing by Author "Villa, Raffaella"

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