Next Article in Journal
Techno-Economic Analysis of Hybrid Binary Cycles with Geothermal Energy and Biogas Waste Heat Recovery
Previous Article in Journal
Assessment of Different Cooling Techniques for Reduced Mechanical Stress in the Windings of Electrical Machines
Open AccessArticle

Improvement of Microbial Electrolysis Cell Activity by Using Anode Based on Combined Plasma-Pretreated Carbon Cloth and Stainless Steel

1
Department of Chemical Engineering and Biotechnology, Ariel University, Ariel 40700, Israel
2
Department of Chemical Sciences, Ariel University, Ariel 40700, Israel
*
Author to whom correspondence should be addressed.
Energies 2019, 12(10), 1968; https://doi.org/10.3390/en12101968
Received: 14 April 2019 / Revised: 12 May 2019 / Accepted: 20 May 2019 / Published: 23 May 2019
(This article belongs to the Section Bio-Energy)
The anode activity in a microbial electrolysis cell (MEC) is known to be a limiting factor in hydrogen production. In this study, the MEC was constructed using different anode materials and a platinum-coated carbon-cloth cathode (CC). The anodes were comprised of CC, stainless steel (SS), and a combination of the two (COMB). The CC and SS anodes were also treated with plasma to improve their surface morphology and hydrophilic properties (CCP and SSP, respectively). A combined version of CCP attached to SS was also applied (COMBP). After construction of the MEC using the different anodes, we conducted electrochemical measurements and examination of biofilm viability. Under an applied voltage of 0.6 V (Ag/AgCl), the currents of a MEC based on CCP and COMBP were 11.66 ± 0.1331 and 16.36 ± 0.3172 A m−2, respectively, which are about three times higher compared to the untreated CC and COMB. A MEC utilizing an untreated SS anode exhibited current of only 0.3712 ± 0.0108 A m−2. The highest biofilm viability of 0.92 OD540 ± 0.07 and hydrogen production rate of 0.0736 ± 0.0022 m3 d−1 m−2 at 0.8 V were obtained in MECs based on the COMBP anode. To our knowledge, this is the first study that evaluated the effect of plasma-treated anodes and the use of a combined anode composed of SS and CC for hydrogen evolution in a MEC. View Full-Text
Keywords: microbial electrolysis cell; carbon cloth; stainless steel; cold low-pressure nitrogen plasma; Geobacter sulfurreducens; biofilm; bioanode; hydrogen production microbial electrolysis cell; carbon cloth; stainless steel; cold low-pressure nitrogen plasma; Geobacter sulfurreducens; biofilm; bioanode; hydrogen production
Show Figures

Figure 1

MDPI and ACS Style

Rozenfeld, S.; Ouaknin Hirsch, L.; Gandu, B.; Farber, R.; Schechter, A.; Cahan, R. Improvement of Microbial Electrolysis Cell Activity by Using Anode Based on Combined Plasma-Pretreated Carbon Cloth and Stainless Steel. Energies 2019, 12, 1968.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop