Anode modification for microbial desalination cell

2020 ◽  
Author(s):  
Ummy Mardiana ◽  
Christophe Innocent ◽  
Marc Cretin ◽  
Buchari
Keyword(s):  
Anode Modification ◽  
Microbial Desalination Cell

Anode modification of polymer light-emitting diode using graphene oxide interfacial layer: The role of ultraviolet-ozone treatment

2013 ◽  
Vol 103 (7) ◽  
pp. 073305 ◽  
Author(s):  
Xiao-Chen Jiang ◽  
Yan-Qing Li ◽  
Yan-Hong Deng ◽  
Qi-Qi Zhuo ◽  
Shuit-Tong Lee ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Interfacial Layer ◽  
Light Emitting Diode ◽  
Ozone Treatment ◽  
Light Emitting ◽  
Anode Modification ◽  
Polymer Light Emitting Diode

Investigation of the efficiency of microbial desalination cell in removal of arsenic from aqueous solutions

Desalination ◽  
2018 ◽  
Vol 438 ◽  
pp. 19-23 ◽  
Author(s):  
Mohammad Malakootian ◽  
Hakimeh Mahdizadeh ◽  
Alireza Nasiri ◽  
Fariba Mirzaienia ◽  
Mahdi Hajhoseini ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Microbial Desalination Cell ◽  
Removal Of Arsenic

scholarly journals Modelisation and Optimization of a Microbial Desalination Cell System

2021 ◽  
Vol 11 (03) ◽  
pp. 118-130 ◽  
Author(s):  
Hedia Khaled ◽  
Adel Zrelli ◽  
Mouna Hamed ◽  
Béchir Chaouachi
Keyword(s):  
Cell System ◽  
Microbial Desalination Cell

scholarly journals Algae-Assisted Microbial Desalination Cell: Analysis of Cathode Performance and Desalination Efficiency Assessment

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 2011
Author(s):  
David Ewusi-Mensah ◽  
Jingyu Huang ◽  
Laura Katherin Chaparro ◽  
Pau Rodenas ◽  
Marina Ramírez-Moreno ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Chlorella Vulgaris ◽  
Coulombic Efficiency ◽  
Geobacter Sulfurreducens ◽  
Dark Phase ◽  
Water Production ◽  
Light Phase ◽  
Experimental Conditions ◽  
Residual Concentration ◽  
Microbial Desalination Cell

Algae-assisted microbial desalination cells represent a sustainable technology for low-energy fresh water production in which microalgae culture is integrated into the system to enhance oxygen reduction reaction in the cathode chamber. However, the water production (desalination rate) is low compared to conventional technologies (i.e., reverse osmosis and/or electrodialysis), as biocathodes provide low current generation to sustain the desalination process. In this sense, more research efforts on this topic are necessary to address this bottleneck. Thus, this study provides analysis, from the electrochemical point of view, on the cathode performance of an algae-assisted microbial desalination cell (MDC) using Chlorella vulgaris. Firstly, the system was run with a pure culture of Chlorella vulgaris suspension in the cathode under conditions of an abiotic anode to assess the cathodic behavior (i.e., cathode polarization curves in light-dark conditions and oxygen depletion). Secondly, Geobacter sulfurreducens was inoculated in the anode compartment of the MDC, and the desalination cycle was carried out. The results showed that microalgae could generate an average of 9–11.5 mg/L of dissolved oxygen during the light phase, providing enough dissolved oxygen to drive the migration of ions (i.e., desalination) in the MDC system. Moreover, during the dark phase, a residual concentration of oxygen (ca. 5.5–8 mg/L) was measured, indicating that oxygen was not wholly depleted under our experimental conditions. Interestingly, the oxygen concentration was restored (after complete depletion of dissolved oxygen by flushing with N2) as soon as microalgae were exposed to the light phase again. After a 31 h desalination cycle, the cell generated a current density of 0.12 mA/cm2 at an efficiency of 60.15%, 77.37% salt was removed at a nominal desalination rate of 0.63 L/m2/h, coulombic efficiency was 9%, and 0.11 kWh/m3 of electric power was generated. The microalgae-assisted biocathode has an advantage over the air diffusion and bubbling as it can self-sustain a steady and higher concentration of oxygen, cost-effectively regenerate or recover from loss and sustainably retain the system’s performance under naturally occurring conditions. Thus, our study provides insights into implementing the algae-assisted cathode for sustainable desalination using MDC technology and subsequent optimization.

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