東華大學圖書館 |

Biofilm Growth and Electron Storage at Anodes /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Biofilm Growth and Electron Storage at Anodes // João Pereirã.
Author:	Pereirã, João,
Description:	1 electronic resource (222 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-08, Section: B.
Contained By:	Dissertations Abstracts International85-08B.
Subject:	Nitrates. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30775089
ISBN:	9798381451061

Biofilm Growth and Electron Storage at Anodes /
Pereirã, João,

Biofilm Growth and Electron Storage at Anodes /João Pereirã. - 1 electronic resource (222 pages)

Source: Dissertations Abstracts International, Volume: 85-08, Section: B.

1.1. The role of biological processes in an environmental contextNowadays, the attention given to the environment keeps increasing as society tries to attenuate the consequences of an excessive and unweighted use of resources from previous, and also current, generations. Based on recent assessments of the planetary boundaries, it is clear that our planet is been pushed to its limits and that the boundaries of its safe operating space have been crossed. 1,2 This includes increasing risks in the categories of climate change, related to growing CO2 emissions, freshwater change, as the water available for plants is getting scarce due to global warming, and novel entities, which are related to chemical industries for the production of e.g., plastics. The "red flags" are evident, and therefore, to tackle these challenges, while sustaining an increasing population, the consequences of the current and future use of resources to the environment need to be reconsidered. In order to guarantee the future of coming generations, it is thus important to tackle the current environmental issues and to implement a circular economy in which resources are recovered and reused as much as possible to bring our planet back to the safe operating space. Thus, this raises the call for new and sustainable technologies.Biological processes play a crucial role towards sustainability. With microorganisms, sustainable energy can be generated, resources can be recovered, and remediation can be addressed. Examples of the contribution of biological processes are the recovery of energy from wastewater via anaerobic digestion, the removal and recovery of nutrients, e.g., nitrogen (N) and phosphorous (P), from wastewater, and the degradation of micropollutants. 3 Microorganisms are present in diverse environments (including different temperature ranges, or the presence or absence of oxygen) and are equipped with a molecular machinery that allows them to facilitate conversions, acting as catalysts in biological processes. Besides, processes based on microorganisms are associated with shorter life cycles of elements and lower environmental pollution when compared to non-biobased processes. For example, bioplastics have a shorter life cycle in comparison to chemically produced plastics due to the ability to regenerate the raw materials via biological degradation, allowing thus for a faster availability of raw materials to be reused in the same, or other, processes. As opposed, the degradation of non-biobased plastics takes longer and the raw materials these plastics are composed of are not regenerated (slowing down circularity), as these are typically incinerated for heat production, which consequently emits CO2,thus resulting in higher environmental pollution when compared to biobased processesBio-electrochemical Systems (BESs) have been introduced as a promising technology to address environmental problems. 4 These systems rely on the electron exchange between microorganisms and electrodes. Even though being widely acknowledged as a technology that allows to steer biological conversions towards the desired reactions and efficiencies, BESs are not yet used on big scales. Several factors including energy losses due to e.g., internal resistances, keeping competitive performances when scaling-up, and cost-effectiveness still need to be addressed. Another important factor towards scalability, and to turn BES into a mature technology, is gaining more understanding of the underlying mechanisms between the microorganisms and electrodes as these can provide valuable insights towards increasing current densities and/or the production of more valuable compounds. As such, the aim of this thesis was to understand the relation between electron transfer and the growth of microorganisms on anodes and to explore electron storage mechanisms at anodes.1.2. The principle behind the combination of electrodes and microorganismsAll reactions occurring in biological processes require the presence of an electron donor and an electron acceptor. Electrons are charged energy carriers, and they flow from the electron donor towards the electron acceptor. This forms a pair of reactions that is typically called redox reaction, in which in one reaction electrons are generated (the oxidation of the electron donor), and in another reaction the electrons are consumed (the reduction of the electron acceptor).

English

ISBN: 9798381451061Subjects--Topical Terms:

914879
Nitrates.

Biofilm Growth and Electron Storage at Anodes /
LDR:05833nmm a22004213i 4500 001 2438775
005 20260727135830.5
006 m o d
007 cr|nu||||||||
008 261011s2023 miu||||||m |||||||eng d
020 $a 9798381451061
035 $a (MiAaPQD)AAI30775089
035 $a (MiAaPQD)Wageningen618460
035 $a AAI30775089
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Pereirã, João, $e author. $3 3830173
245 1 0 $a Biofilm Growth and Electron Storage at Anodes / $c João Pereirã.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 1 electronic resource (222 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 85-08, Section: B.
500 $a Advisors: ter Heijne, Annemiek; Hamelers, H. V.M.; Sleutels, T. H.J.A.
502 $b Ph.D. $c Wageningen University and Research $d 2023.
520 $a 1.1. The role of biological processes in an environmental contextNowadays, the attention given to the environment keeps increasing as society tries to attenuate the consequences of an excessive and unweighted use of resources from previous, and also current, generations. Based on recent assessments of the planetary boundaries, it is clear that our planet is been pushed to its limits and that the boundaries of its safe operating space have been crossed. 1,2 This includes increasing risks in the categories of climate change, related to growing CO2 emissions, freshwater change, as the water available for plants is getting scarce due to global warming, and novel entities, which are related to chemical industries for the production of e.g., plastics. The "red flags" are evident, and therefore, to tackle these challenges, while sustaining an increasing population, the consequences of the current and future use of resources to the environment need to be reconsidered. In order to guarantee the future of coming generations, it is thus important to tackle the current environmental issues and to implement a circular economy in which resources are recovered and reused as much as possible to bring our planet back to the safe operating space. Thus, this raises the call for new and sustainable technologies.Biological processes play a crucial role towards sustainability. With microorganisms, sustainable energy can be generated, resources can be recovered, and remediation can be addressed. Examples of the contribution of biological processes are the recovery of energy from wastewater via anaerobic digestion, the removal and recovery of nutrients, e.g., nitrogen (N) and phosphorous (P), from wastewater, and the degradation of micropollutants. 3 Microorganisms are present in diverse environments (including different temperature ranges, or the presence or absence of oxygen) and are equipped with a molecular machinery that allows them to facilitate conversions, acting as catalysts in biological processes. Besides, processes based on microorganisms are associated with shorter life cycles of elements and lower environmental pollution when compared to non-biobased processes. For example, bioplastics have a shorter life cycle in comparison to chemically produced plastics due to the ability to regenerate the raw materials via biological degradation, allowing thus for a faster availability of raw materials to be reused in the same, or other, processes. As opposed, the degradation of non-biobased plastics takes longer and the raw materials these plastics are composed of are not regenerated (slowing down circularity), as these are typically incinerated for heat production, which consequently emits CO2,thus resulting in higher environmental pollution when compared to biobased processesBio-electrochemical Systems (BESs) have been introduced as a promising technology to address environmental problems. 4 These systems rely on the electron exchange between microorganisms and electrodes. Even though being widely acknowledged as a technology that allows to steer biological conversions towards the desired reactions and efficiencies, BESs are not yet used on big scales. Several factors including energy losses due to e.g., internal resistances, keeping competitive performances when scaling-up, and cost-effectiveness still need to be addressed. Another important factor towards scalability, and to turn BES into a mature technology, is gaining more understanding of the underlying mechanisms between the microorganisms and electrodes as these can provide valuable insights towards increasing current densities and/or the production of more valuable compounds. As such, the aim of this thesis was to understand the relation between electron transfer and the growth of microorganisms on anodes and to explore electron storage mechanisms at anodes.1.2. The principle behind the combination of electrodes and microorganismsAll reactions occurring in biological processes require the presence of an electron donor and an electron acceptor. Electrons are charged energy carriers, and they flow from the electron donor towards the electron acceptor. This forms a pair of reactions that is typically called redox reaction, in which in one reaction electrons are generated (the oxidation of the electron donor), and in another reaction the electrons are consumed (the reduction of the electron acceptor).
546 $a English
590 $a School code: 2157
650 4 $a Nitrates. $3 914879
650 4 $a Electrons. $3 516581
650 4 $a Environmental impact. $3 3564810
650 4 $a Alternative energy. $3 3436775
650 4 $a Atomic physics. $3 3173870
650 4 $a Physics. $3 516296
690 $a 0363
690 $a 0748
690 $a 0474
690 $a 0605
710 2 $a Wageningen University and Research. $e degree granting institution. $3 3815267
720 1 $a ter Heijne, Annemiek $e degree supervisor.
720 1 $a Hamelers, H. V.M. $e degree supervisor.
720 1 $a Sleutels, T. H.J.A. $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 85-08B.
790 $a 2157
791 $a Ph.D.
792 $a 2023
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30775089