John Greenman

Effects of sulphate addition and sulphide inhibition on microbial fuel cells (2013)
Journal Article

The effects of adding sulphate in: (i) standard activated sludge microbial fuel cells (MFCs) and (ii) larger-scale leachate-treating columns - both as individual units and as a system connected in cascade - are reported. S-replete power output was ∼2... Read More about Effects of sulphate addition and sulphide inhibition on microbial fuel cells.

Bi-directional electrical characterisation of microbial fuel cell (2013)
Journal Article

The electrical performance of microbial fuel cells in steady-state is usually investigated by standard characterisation methods that reveal many important parameters e.g. maximum power. This paper introduces a novel " bi-directional" method to study... Read More about Bi-directional electrical characterisation of microbial fuel cell.

MFC-cascade stacks maximise COD reduction and avoid voltage reversal under adverse conditions (2013)
Journal Article

Six continuous-flow Microbial Fuel Cells (MFCs) configured as a vertical cascade and tested under different electrical connections are presented. When in parallel, stable operation and higher power and current densities than individual MFCs were obse... Read More about MFC-cascade stacks maximise COD reduction and avoid voltage reversal under adverse conditions.

MPL based anode for improved performance in microbial fuel cells (2013)
Presentation / Conference Contribution

Copyright © 2013 Delta Energy and Environment. Two different anode materials, carbon veil and carbon cloth, were modified with a micro-porous layer for microbial fuel cells. 2.2 and 1.8 times higher power was achieved as a result of this modification... Read More about MPL based anode for improved performance in microbial fuel cells.

Maximising electricity production by controlling the biofilm specific growth rate in microbial fuel cells (2012)
Journal Article

The aim of this work is to study the relationship between growth rate and electricity production in perfusion-electrode microbial fuel cells (MFCs), across a wide range of flow rates by co-measurement of electrical output and changes in population nu... Read More about Maximising electricity production by controlling the biofilm specific growth rate in microbial fuel cells.

Microbial volatile compounds in health and disease conditions (2012)
Journal Article

Microbial cultures and/or microbial associated diseases often have a characteristic smell. Volatile organic compounds (VOCs) are produced by all microorganisms as part of their normal metabolism. The types and classes of VOC produced is wide, includi... Read More about Microbial volatile compounds in health and disease conditions.

Electrochemically activated solutions: Evidence for antimicrobial efficacy and applications in healthcare environments (2012)
Journal Article

Due to the limitations associated with the use of existing biocidal agents, there is a need to explore new methods of disinfection to help maintain effective bioburden control, especially within the healthcare environment. The transformation of low m... Read More about Electrochemically activated solutions: Evidence for antimicrobial efficacy and applications in healthcare environments.

Investigating a cascade of seven hydraulically connected microbial fuel cells (2012)
Journal Article

Seven miniature microbial fuel cells (MFCs) were hydraulically linked in sequence and operated in continuous-flow (cascade). Power output and treatment efficiency were investigated using varying organic loads, flow-rates and electrical configurations... Read More about Investigating a cascade of seven hydraulically connected microbial fuel cells.

Effect of mouth-rinse formulations on oral malodour processes in tongue-derived perfusion biofilm model (2012)
Journal Article

An in vitro matrix biofilm perfusion model of tongue-derived microcosms for studying volatile sulfur compound (VSC) biogenesis has been previously described. The model was modified in order to monitor H 2 S in situ by use of a specialized electrode a... Read More about Effect of mouth-rinse formulations on oral malodour processes in tongue-derived perfusion biofilm model.

Urine utilisation by microbial fuel cells; Energy fuel for the future (2012)
Journal Article

This communication reports for the first time the direct utilisation of urine in MFCs for the production of electricity. Different conversion efficiencies were recorded, depending on the amount treated. Elements such as N, P, K can be locked into new... Read More about Urine utilisation by microbial fuel cells; Energy fuel for the future.

Microbial fuel cells for robotics: Energy autonomy through artificial symbiosis (2012)
Journal Article

The development of the microbial fuel cell (MFC) technology has seen an enormous growth over the last hundred years since its inception by Potter in 1911. The technology has reached a level of maturity that it is now considered to be a field in its o... Read More about Microbial fuel cells for robotics: Energy autonomy through artificial symbiosis.

Urine as a suitable fuel for microbial fuel cells (2011)
Presentation / Conference Contribution

MFCs show promise in utilising a wide variety of organic sources. This paper describes the utilisation of neat urine as the main feedstock, with conversion efficiencies of >50%. Power densities of 4.93mW/m2 were recorded when 48 small-scale MFCs were... Read More about Urine as a suitable fuel for microbial fuel cells.

Investigating the effects of fluidic connection between microbial fuel cells (2011)
Journal Article

Microbial fuel cells (MFCs) can 'treat' wastewater but individually are thermodynamically restricted. Scale-up might, therefore, require a plurality of units operating in a stack which could introduce losses simply through fluidic connections. Experi... Read More about Investigating the effects of fluidic connection between microbial fuel cells.

The overshoot phenomenon as a function of internal resistance in microbial fuel cells (2011)
Journal Article

A method for assessing the performance of microbial fuel cells (MFCs) is the polarisation sweep where different external resistances are applied at set intervals (sample rates). The resulting power curves often exhibit an overshoot where both power a... Read More about The overshoot phenomenon as a function of internal resistance in microbial fuel cells.

Comparative effects of various commercially available mouthrinse formulations on oral malodour (2011)
Journal Article

Objectives: The primary aim of this study was to compare a new mouthwash (SB12®) containing 0.025% chlorhexidine and 0.3% zinc for oral malodour reduction against four commercially available mouthwashes and negative control. A secondary aim was to co... Read More about Comparative effects of various commercially available mouthrinse formulations on oral malodour.

Multivariate analysis of bacterial volatile compound profiles for discrimination between selected species and strains in vitro (2011)
Journal Article

Volatile compounds (VCs) are produced by all microorganisms as part of their normal metabolism. The aim of this study was to determine whether bacterial VC profiles could be used to discriminate between selected bacterial species and strains in vitro... Read More about Multivariate analysis of bacterial volatile compound profiles for discrimination between selected species and strains in vitro.

Microbial fuel cells: Scalability and their use in robotics (2011)
Book Chapter

This is probably the first written and relatively accurate description of microorganisms, made by the Roman scholar Marcus Terentius Varro (116-27 B.C.). It was then Anthony van Leeuwenhoek (ca. 1677) who, for the first time, observed little animals... Read More about Microbial fuel cells: Scalability and their use in robotics.

Small scale microbial fuel cells and different ways of reporting output (2010)
Presentation / Conference Contribution

The present study, reports on the findings of connecting 2 stacks of 48 MFCs and the importance of maturity and acclimation for the anodic biofilms. Furthermore, an attempt is made to emphasize the importance of a universal unit for quantifying power... Read More about Small scale microbial fuel cells and different ways of reporting output.

MFCs and algae (2010)
Presentation / Conference Contribution

Algae and photosynthetic bacteria may be integrated or associated with Microbial Fuel Cells MFCs in a number of different ways including: (1) use of whole (intact) or lipid-extracted lyzed cells as the primary carbon-energy source for anodic microbia... Read More about MFCs and algae.

John Greenman's Outputs (178)