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Master's Dissertation
DOI
https://doi.org/10.11606/D.59.2021.tde-10032021-112718
Document
Author
Full name
Bianca Tainá Ferreira
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Ribeirão Preto, 2021
Supervisor
Committee
Huguenin, Fritz Cavalcante (President)
Demets, Gregoire Jean Francois
Lima, Fabio Henrique Barros de
Morais, Luís Carlos de
Title in Portuguese
Captação de energia a partir de reações de neutralização
Keywords in Portuguese
Armazenamento de energia
Gradiente salino
Tratamento de águas residuais
Abstract in Portuguese
Com o crescimento populacional, novas tecnologias são necessárias para a preservação ambiental. Sabe-se que a água potável é essencial para a saúde humana e para o ambiente, mas a falha na implementação de novas políticas públicas afeta diretamente na contaminação deste recurso hídrico. Uma maneira de conectar a infraestrutura de energia e as unidades de tratamento de águas residuais seria implementar sistemas eletroquímicos como: Máquinas ácido-base, que utilizam o gradiente salino e de prótons para geração de energia. Estas operam entre reservatórios ácidos e básicos. A adição de base em soluções ácidas pode resultar em trabalho elétrico relacionado à variação das concentrações de prótons e íons alcalinos ao longo do ciclo operacional da máquina. Estratégias são propostas para captar parte da energia de mistura entrópica, como também de conversão de energia solar na faixa visível do espectro eletromagnético, aumentando a eficiência da máquina durante o tratamento de águas residuais ácidas. Mais especificamente, a máquina ácido-base fotoassistida, composta por uma bateria fotoassistida e uma célula eletrolítica íon sódio-ar, pode contribuir para a preservação ambiental e, consequentemente, para o desenvolvimento sustentável.
Title in English
Energy capture from neutralization reactions
Keywords in English
Energy storage
Saline gradient
Waste water treatment
Abstract in English
The recent massive population growth demands new technologies to preserve the environment. It is well known that potable water is essential for human health, but the failure to implement new public policies directly affects water contamination. One way to connect the energy infrastructure and wastewater treatment units would be to implement electrochemical systems such as: Acid-based machines, which use saline and prostheses gradients as power generators. These machines operate between specific and basic reservoirs. The addition of alkaline solutions to acidic solutions results in electrical work, which is related to the neutralization reaction. It is well established that the proton concentration and alkaline ions vary during the machine's operational cycle, and the main contribution of this process is linked with the entropic mixing. This study also discusses an alternative strategy of converting energy in the visible range of the electromagnetic spectrum. This converted energy can improve the machine efficiency during the acidic wastewater treatment along with the use of solar energy in the process. More specifically, a photo-assisted acid-based machine, consisting of a photo-assisted battery and an electrolytic ion sodium air cell can help preserve the environment and, consequently, promote sustainable development.
 
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Publishing Date
2021-03-23
 
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