An innovative biogas upgrading process consists in the utilization of a microbial electrolysis cell (MEC) which biocathode performs bioelectromethanogenesis reaction reducing CO2 into CH4 while an additional removal mechanism sorption as HCO3−, due to alkalinity generation catholyte. Here, two chamber 12-liter tubular MEC has been developed upgrade by using bioelectrochemical organic matter oxi...

Controlled orientation of a small laccase on a multi-walled carbon nanotube electrode was achieved via copper-free click chemistry mediated immobilization. Modification of the enzyme was limited to only the tethering site and involved the genetic incorporation of the unnatural amino acid 4-azido-L-phenylalanine (AzF). This approach enabled efficient direct electron transfer.

Microbial electrosynthesis (MES) is an emerging electrochemical technology currently being researched as a CO 2 sequestration method to address climate change. MES can convert from pollution or waste materials into various carbon compounds with low energy requirements using electrogenic microbes biocatalysts. However, the critical component in this technology, cathode, still needs perform more ...

Wastewater, as the used water, carries huge energy that is frequently ignored and unexploited. Microbes , bioelectrocatalysts in microbial electrochemical systems (MESs), can convert chemical stored biodegradable matrixes from wastewater to bioelectricity chemicals. However, due sluggish treatment rates bioenergy production, wider applications have been hampered. Currently, photo-assisted MESs,...

Successful realisation of many important electrochemical processes, including development of fuel cell (FC) technology, requires generation of novel highly effective catalysts, which are active at ambient temperatures and physiological pH values. Optimal technological solutions can be achieved by using biocatalysts heterogeneously arranged in an electroconductive matrix, e.g. redox enzymes immo...

Electron-accepting (electrotrophic) biocathodes were produced by first enriching graphite fiber brush electrodes as the anodes in sediment-type microbial fuel cells (sMFCs) using two different marine sediments and then electrically inverting the anodes to function as cathodes in two-chamber bioelectrochemical systems (BESs). Electron consumption occurred at set potentials of -439 mV and -539 mV...

The high surface areas of nanostructured electrodes can provide for significantly enhanced surface loadings of electroactive materials. The fabrication and characterization of nanoporous gold (np-Au) substrates as electrodes for bioelectrochemical applications is described. Robust np-Au electrodes were prepared by sputtering a gold-silver alloy onto a glass support and subsequent dealloying of ...