東華大學圖書館 |

Moving Bed Capacitive Bioanodes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Moving Bed Capacitive Bioanodes./
作者:	Borsje, Casper.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	168 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-05, Section: B.
Contained By:	Dissertations Abstracts International83-05B.
標題:	Fuel cells. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28760912
ISBN:	9798494452894

Moving Bed Capacitive Bioanodes.
Borsje, Casper.

Moving Bed Capacitive Bioanodes. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 168 p.

Source: Dissertations Abstracts International, Volume: 83-05, Section: B.

Thesis (Ph.D.)--Wageningen University and Research, 2021.

This item must not be sold to any third party vendors.

Municipal and industrial activities produce large volumes of wastewater. Discharge of wastewater containing organics leads to deoxygenation of surface waters, resulting in degradation of our natural environment. Removal of the organics requires wastewater treatment. Globally, aerobic treatment is the most used technology for removal of organics from wastewater. Aerobic treatment requires energy input for active oxygenation and treatment of waste biomass (also called waste activated sludge) grown from the organics. The waste activated sludge can be digested anaerobically to produce biogas, which allows some energy to be recovered to heat and power the treatment of wastewater. New technological developments combine aerobic and anaerobic environments in granular sludge to consume organics, nitrogen and phosphorous, and have lowered the required energy input.The organics in wastewater contain chemical energy, which can be recovered by anaerobic processes. Anaerobic digestion (AD) can be used in Upflow Anaerobic Sludge Bed (UASB) reactors to directly produce biogas from the organics in wastewater, without producing waste sludge first. The biogas contains 80% combustible methane, from which 30% can be recovered as electrical power, and the rest is produced as heat which is needed to heat the UASB reactor for sufficient methanogenic productivity. Before combustion, H2 S removal is required to prevent corrosion of the engines and other components. In practice, 26% of the energy in organics can be recovered as electrical power.Bioelectrochemical systems (BESs) make use of electroactive bacteria that can interact with electrodes. The bacteria grow as a biofilm on the anode, called a bioanode, and oxidize organics. Bioanodes are theoretically able to convert 100% (except for some biomass growth) of the organics to electrical current, in contrast to the 26% in AD. The electrons, freed in the oxidation, are transferred through an electrical circuit as an electrical current to the cathode. At the cathode, a reduction reaction takes place, using the electrons originating from the bioanode. For increased efficiency and selectivity, an ion exchange membrane is placed between the anode and cathode electrolyte compartments. Ions cross over from the anode and cathode, to preserve charge neutrality. Microbial Fuel Cells (MFCs) are bioelectrochemical systems which generate electrical power from a positive cell voltage between the anode and cathode. Microbial Electrolysis Cells (MECs) are bioelectrochemical systems which generate products at the cathode, for which an applied cell voltage is required (and thus negative compared to the MFCs). Common products in MECs are hydrogen and NaOH. The cell voltage, generated by the potential difference between cathode and anode, is reduced by voltage losses. These voltage losses mean that, in practice, there is less power produced or the efficiency of production of valuable products is reduced.Traditional bioelectrochemical cell designs require space to prevent clogging, caused by solids in the wastewater or biomass grown on the anode (often high m2 /m3 structures) in the cell. The wide spacing, between anode and cathode, results in voltage losses due to low conductivity of the wastewater, thus decreasing the energy recovered from the organics. Electroactive bacteria and methanogenic archaea grow under similar conditions, such as substrate concentration and pH. Low substrate concentrations controlled via organic loading rate are hypothesized to allow electroactive bacteria to outcompete methanogenic archaea.

ISBN: 9798494452894Subjects--Topical Terms:

645135
Fuel cells.

Moving Bed Capacitive Bioanodes.
LDR:04692nmm a2200361 4500 001 2346273
005 20220620110504.5
008 241004s2021 ||||||||||||||||| ||eng d
020 $a 9798494452894
035 $a (MiAaPQ)AAI28760912
035 $a (MiAaPQ)Wageningen582810
035 $a AAI28760912
040 $a MiAaPQ $c MiAaPQ
100 1 $a Borsje, Casper. $3 3685348
245 1 0 $a Moving Bed Capacitive Bioanodes.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 168 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-05, Section: B.
500 $a Advisor: Buisman, C.J.N. ;Heijne, A. Ter;Sleutels, T. .
502 $a Thesis (Ph.D.)--Wageningen University and Research, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Municipal and industrial activities produce large volumes of wastewater. Discharge of wastewater containing organics leads to deoxygenation of surface waters, resulting in degradation of our natural environment. Removal of the organics requires wastewater treatment. Globally, aerobic treatment is the most used technology for removal of organics from wastewater. Aerobic treatment requires energy input for active oxygenation and treatment of waste biomass (also called waste activated sludge) grown from the organics. The waste activated sludge can be digested anaerobically to produce biogas, which allows some energy to be recovered to heat and power the treatment of wastewater. New technological developments combine aerobic and anaerobic environments in granular sludge to consume organics, nitrogen and phosphorous, and have lowered the required energy input.The organics in wastewater contain chemical energy, which can be recovered by anaerobic processes. Anaerobic digestion (AD) can be used in Upflow Anaerobic Sludge Bed (UASB) reactors to directly produce biogas from the organics in wastewater, without producing waste sludge first. The biogas contains 80% combustible methane, from which 30% can be recovered as electrical power, and the rest is produced as heat which is needed to heat the UASB reactor for sufficient methanogenic productivity. Before combustion, H2 S removal is required to prevent corrosion of the engines and other components. In practice, 26% of the energy in organics can be recovered as electrical power.Bioelectrochemical systems (BESs) make use of electroactive bacteria that can interact with electrodes. The bacteria grow as a biofilm on the anode, called a bioanode, and oxidize organics. Bioanodes are theoretically able to convert 100% (except for some biomass growth) of the organics to electrical current, in contrast to the 26% in AD. The electrons, freed in the oxidation, are transferred through an electrical circuit as an electrical current to the cathode. At the cathode, a reduction reaction takes place, using the electrons originating from the bioanode. For increased efficiency and selectivity, an ion exchange membrane is placed between the anode and cathode electrolyte compartments. Ions cross over from the anode and cathode, to preserve charge neutrality. Microbial Fuel Cells (MFCs) are bioelectrochemical systems which generate electrical power from a positive cell voltage between the anode and cathode. Microbial Electrolysis Cells (MECs) are bioelectrochemical systems which generate products at the cathode, for which an applied cell voltage is required (and thus negative compared to the MFCs). Common products in MECs are hydrogen and NaOH. The cell voltage, generated by the potential difference between cathode and anode, is reduced by voltage losses. These voltage losses mean that, in practice, there is less power produced or the efficiency of production of valuable products is reduced.Traditional bioelectrochemical cell designs require space to prevent clogging, caused by solids in the wastewater or biomass grown on the anode (often high m2 /m3 structures) in the cell. The wide spacing, between anode and cathode, results in voltage losses due to low conductivity of the wastewater, thus decreasing the energy recovered from the organics. Electroactive bacteria and methanogenic archaea grow under similar conditions, such as substrate concentration and pH. Low substrate concentrations controlled via organic loading rate are hypothesized to allow electroactive bacteria to outcompete methanogenic archaea.
590 $a School code: 2157.
650 4 $a Fuel cells. $3 645135
650 4 $a Biofilms. $3 660574
650 4 $a Cytochrome. $3 3683768
650 4 $a Water treatment. $3 3683746
650 4 $a Electrodes. $3 629151
650 4 $a Equilibrium. $3 668417
650 4 $a Bacteria. $3 550366
650 4 $a Fatty acids. $3 897910
650 4 $a Hydrogen. $3 580023
650 4 $a Scientific imaging. $3 3560377
650 4 $a Energy. $3 876794
650 4 $a Electric currents. $3 868393
650 4 $a Effluents. $3 3559973
650 4 $a Activated carbon. $3 3685349
650 4 $a Competition. $3 537031
650 4 $a Precipitation. $3 3680799
650 4 $a Electrolytes. $3 656992
650 4 $a Nanowires. $3 576100
650 4 $a Sludge. $3 3685350
650 4 $a Oxidation. $3 714629
650 4 $a Conductivity. $3 3681488
650 4 $a Biogas. $3 1566533
650 4 $a Fluidized bed reactors. $3 3681814
650 4 $a Microorganisms. $3 666946
650 4 $a Cellular biology. $3 3172791
650 4 $a Chemical engineering. $3 560457
650 4 $a Engineering. $3 586835
650 4 $a Microbiology. $3 536250
650 4 $a Nanotechnology. $3 526235
690 $a 0791
690 $a 0379
690 $a 0542
690 $a 0537
690 $a 0410
690 $a 0652
710 2 $a Wageningen University and Research. $3 3557914
773 0 $t Dissertations Abstracts International $g 83-05B.
790 $a 2157
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28760912