Microbial Desalination

Decent Essays
Pure water and energy are two critical element in every aspect of human life such as social equity, human healthiness, ecology integrity and cost-effective sustainability[1]. The long-lasting partition between energy and water attentions is generally obvious in the case of energy and water managing[2]. The majority of existing water on the earth is categorized as salt water. The total volume of water on earth is valued at 1.386 billion km³, with 97.5 percent as saline and 2.5 percent as fresh water[3]. Water reuse and desalination are the only means to rise the available supply of fresh water[4, 5]. Over the years, water desalination methods have developed promptly, particularly with a view to decreasing energy requests[6]. For instance, desalination…show more content…
In abiotic cathode chambers, either permanganate or ferricyanide is commonly used as a chemical agent[15]. Cao et al has reported microbial desalination cell is able to remove 90% salt using ferricyanice catholyte[10]. Microbial desalination cell using platinum (Pt) as catalysts in cathode also shows a high efficiency[16, 17]. However, the cathodes used in previous research, such as those with ferricyanide catholyte, are not a sustainable technology in spite of their positive effects on energy production[18]. Other MDCs, such as the air cathode with Pt catalysts, are too expensive to consider for implementation on a broad scale. On the other hand, oxygen is the most popular terminal electron acceptor for the cathode reaction in MFCs because of its high redox potential and relatively low supply cost. One of the main drawbacks of this type of biocathode is the crossover of oxygen from the cathodic to the anodic chamber in MFCs, which promotes the loss of electrons and the activity of a biofilm on the anode electrode. However, this drawback may be eliminated with a desalination chamber between the anode and cathode…show more content…
In order to a direct comparison, three MDCs with low concentration of buffer solution, high concentration of buffer solution and areation were operated in parallel to explore the effect of relatively low cost catholyte on MDC performance. The performance of the MDCs was evaluated by determining the change in salt water conductivity, voltage produced and maximum power
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