John Greenman's Outputs (178)

Electro-osmotic-based catholyte production by Microbial Fuel Cells (2014)
Presentation / Conference Contribution

Small-scale microbial fuel cells utilising uric salts (2014)
Journal Article

With exhausting fossil fuels and increasing greenhouse gas emissions, numerous attempts, to overcome future energy challenges, are being pursued. In this study, small-scale microbial fuel cells (MFCs, 0.7mL anodic chamber volume) were built to invest... Read More about Small-scale microbial fuel cells utilising uric salts.

Towards fully biodegradable microbial fuel cells (2014)
Book Chapter

Introduction. In order to sustainably protect and manage the environment, a number of challenges need to be addressed, including: (i) the search for new sources of green energy; (ii) improving the efficiency of human waste treatment; and (iii) identi... Read More about Towards fully biodegradable microbial fuel cells.

Wearable self sufficient MFC communication system powered by urine (2014)
Presentation / Conference Contribution

A new generation of self-sustainable and wearable Microbial Fuel Cells (MFCs) is introduced. Two different types of energy - chemical energy found in urine and mechanical energy harvested by manual pumping - were converted to electrical energy. The w... Read More about Wearable self sufficient MFC communication system powered by urine.

Smart miniature microbial fuel cell design for increased electricity generation and waste water treatment (2013)
Presentation / Conference Contribution

Copyright © 2013 Delta Energy and Environment. Microbial Fuel Cells (MFCs) are a green sustainable energy with minimal carbon footprint, suitable for wastewater remediation and generation of useful amounts of electricity. This study focuses on the ar... Read More about Smart miniature microbial fuel cell design for increased electricity generation and waste water treatment.

Algal "lagoon" effect for oxygenating MFC cathodes (2013)
Presentation / Conference Contribution

Copyright © 2013 Delta Energy and Environment. This paper describes the active oxygenation performed by the photosynthetic organisms in the cathode of a two-chamber Microbial Fuel Cell system. The algal growth provided dissolved oxygen to the cathode... Read More about Algal "lagoon" effect for oxygenating MFC cathodes.

Optimized activated carbon cathode in membraneless single chamber microbial fuel cell treating acetate (2013)
Presentation / Conference Contribution

Copyright © 2013 Delta Energy and Environment. Activated Carbon (AC) have been used as cheap alternative cathode for microbial fuel cell (MFC) applications. Different parameters (applied pressure and temperature treatment) have been changed and the c... Read More about Optimized activated carbon cathode in membraneless single chamber microbial fuel cell treating acetate.

Dynamic polarisation reveals differential steady-state stabilisation and capacitive-like behaviour in microbial fuel cells (2013)
Journal Article

In this paper we present several preliminary results produced with a purposely-designed external-resistor (R ext ) sweeping tool for microbial fuel cells (MFCs). Fast sampling rates show that MFCs exhibit differential steady-state stabilisation behav... Read More about Dynamic polarisation reveals differential steady-state stabilisation and capacitive-like behaviour in microbial fuel cells.

Comparing terracotta and earthenware for multiple functionalities in microbial fuel cells (2013)
Journal Article

The properties of earthenware and terracotta were investigated in terms of structural integrity and ion conductivity, in two microbial fuel cell (MFC) designs. Parameters such as wall thickness (4, 8, 18 mm), porosity and cathode hydration were analy... Read More about Comparing terracotta and earthenware for multiple functionalities in microbial fuel cells.

Biodegradation and proton exchange using natural rubber in microbial fuel cells (2013)
Journal Article

Microbial fuel cells (MFCs) generate electricity from waste but to date the technology's development and scale-up has been held-up by the need to incorporate expensive materials. A costly but vital component is the ion exchange membrane (IEM) which c... Read More about Biodegradation and proton exchange using natural rubber in microbial fuel cells.

Waste to real energy: The first MFC powered mobile phone (2013)
Journal Article

This communication reports for the first time the charging of a commercially available mobile phone, using Microbial Fuel Cells (MFCs) fed with real neat urine. The membrane-less MFCs were made out of ceramic material and employed plain carbon based... Read More about Waste to real energy: The first MFC powered mobile phone.

Energy production and sanitation improvement using microbial fuel cells (2013)
Journal Article

This study builds on the previous work of urine utilisation and uses small-scale microbial fuel cells (MFCs), working both as individual units in cascade or collectively as a stack, to utilise artificial urine. Artificial urine was prepared at concen... Read More about Energy production and sanitation improvement using microbial fuel cells.

Urine: Waste or resource? The economic and social aspects (2013)
Journal Article

Photosynthetic cathodes for microbial fuel cells (2013)
Presentation / Conference Contribution

One of the major limiting factors in the practical implementation of Microbial Fuel Cells is finding efficient and sustainable catalysts for the cathode half reaction, in an attempt to avoid expensive and/or toxic catalysts. The use of phototrophic o... Read More about Photosynthetic cathodes for microbial fuel cells.

Power generation and contaminant removal in single chamber microbial fuel cells (SCMFCs) treating human urine (2013)
Presentation / Conference Contribution

The potential of single chamber microbial fuel cells (SCMFC) to treat raw, fresh human urine was investigated. The power generation (55 μW) of the SCMFCs with platinum (Pt)-based cathode was higher than those with Pt-free cathodes (23 μW) at the begi... Read More about Power generation and contaminant removal in single chamber microbial fuel cells (SCMFCs) treating human urine.

Increased power output from micro porous layer (MPL) cathode microbial fuel cells (MFC) (2013)
Presentation / Conference Contribution

Microbial fuel cells are bio-electrochemical transducers that utilise microorganisms to generate electricity, through the oxidation of organic matter. They consist of a negative anode and a positive cathode, separated by an ion selective membrane. Th... Read More about Increased power output from micro porous layer (MPL) cathode microbial fuel cells (MFC).

Use of an in vitro flat-bed biofilm model to measure biologically active anti-odour compounds (2013)
Journal Article

The objective of this study was to demonstrate the utility of a modified flat-bed perfusion biofilm matrix system for testing toothpaste formulations directly, without dilution, as a layer in direct contact with the biofilm matrix surface. Final biof... Read More about Use of an in vitro flat-bed biofilm model to measure biologically active anti-odour compounds.

Oxygenic phototrophic biofilms for improved cathode performance in microbial fuel cells (2013)
Journal Article

The rate of oxygen reduction reaction in the cathodic chambers of microbial fuel cells (MFCs) is a typical limiting aspect of its performance. Recently, research on biocathodes has gained more interest as it allows circumventing the utilisation of ex... Read More about Oxygenic phototrophic biofilms for improved cathode performance in microbial fuel cells.

Volatiles from oral anaerobes confounding breath biomarker discovery (2013)
Journal Article

The levels of compounds in exhaled mouth air do not necessarily reflect levels in the systemic circulation as bacteria can bio-transform substrates to produce compounds within the mouth. This should be of concern to researchers measuring breath volat... Read More about Volatiles from oral anaerobes confounding breath biomarker discovery.

The first self-sustainable microbial fuel cell stack (2013)
Journal Article

This study reports for the first time on the development of a self-sustainable microbial fuel cell stack capable of self-maintenance (feeding, hydration, sensing & reporting). Furthermore, the stack system is producing excess energy, which can be use... Read More about The first self-sustainable microbial fuel cell stack.