Towards cost-effective soil microbial fuel cell designs

Soil microbial fuel cell (SMFC) is a carbon-neutral energy harvesting technology that exploits the use of electroactive bacteria naturally present in soil to directly generate electricity from organic compounds. Given the simplicity of the system design, SMFCs have great potential to be used for decentralised solutions, especially in areas where access to conventional energy sources is limited. Yet, the high cost to power ratio severely limits the translation of this technology into the market. With the aim of reducing the capital cost, in this study we explore the effect of decreasing the amounts of current collector (CC) on the performance. The results demonstrate that increasing the amount of current collector per surface area of the electrode is not a feasible way of enhancing power densities, as to increase the performance by 20% and 35%, the amount of current collector would have to be increased by 150% and 300%, respectively. This highlights the importance of economic evaluations when optimising the design of a SMFC.

Creating Electricity From Soil

Soil Microbial Fuel Cell (SMFC) provides the prospect of removing electrical flow from an out sized scope of soils and inexhaustible biomass existing techniques will need pricey chemistry gear and focused reactors. The present examination it created a basic framework for steering high through place bio chemistry exploration using varied modest microorganism power modules worked with industrially accessible materials and worked in temperature while not using agar salt extension and nucleon trade layer. In our current examination, it gathered 2 distinct sorts of soil tests: aubergine developed soil (S1) and Sugarcane developed soil (S2). The creation of power was calculable by utilizing power estimation for these 2 developed soil check. the simplest created circuit voltage, power thickness and current thickness accomplished in aubergine developed soil (S1) were discovered to be 543 mV, 12.8 mW/m2 and 23.6 mA/m2 singly. The engineered SMFC provide enough voltage (2.3 V perpetually for around 456 hours) to manage the LED bulbs effectively for around 456 hours persistently in aubergine developed soil (S1). It created no power in Sugarcane developed soil (S2), it preponderantly affirms the performance of world organization for power creation within the dirt.

A Novel Design Portable Plugged-Type Soil Microbial Fuel Cell for Bioelectricity Generation

Soil microbial fuel cells (SMFCs) are a promising cost-effective power source for on-demand electricity generation applications. So far, reported SMFC configurations are usually bulky and hard to setup. In this study, a low-cost portable plugged-type SMFC (PSMFC) was designed and fabricated for on-demand micropower generation. The PSMFC can be activated just by plugging into natural wet soil, which is easy to access in the natural condition. The PSMFC uses carbon-based electrodes for cost-effectiveness. After setting the PSMFC into the soil to activate, it started to produce electricity after 1 h and reached the power density of 7.3 mW/m2 after 48 h. The proposed PSMFC can potentially generate electricity for remote sensors or soil sensing systems.